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	<title>Yeanny Mulia, M.D.</title>
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	<link>http://yeanny.com</link>
	<description>Will is not Enough, you must Do... Know is not Enough, you must Apply</description>
	<pubDate>Wed, 02 Dec 2009 10:24:40 +0000</pubDate>
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		<title>Episiotomy: Can you deliver a baby without one?</title>
		<link>http://yeanny.com/episiotomy-can-you-deliver-a-baby-without-one/</link>
		<comments>http://yeanny.com/episiotomy-can-you-deliver-a-baby-without-one/#comments</comments>
		<pubDate>Wed, 02 Dec 2009 10:24:40 +0000</pubDate>
		<dc:creator>Yeanny</dc:creator>
		
		<category><![CDATA[obstetrics]]></category>

		<category><![CDATA[episiotomy]]></category>

		<category><![CDATA[kegel]]></category>

		<category><![CDATA[labor and delivery]]></category>

		<category><![CDATA[perineal tear]]></category>

		<guid isPermaLink="false">http://yeanny.com/?p=224</guid>
		<description><![CDATA[An episiotomy is an incision made in the tissue between the vaginal opening and anus (perineum) during childbirth. Although an episiotomy was once a routine part of childbirth, that&#8217;s no longer the case. If you&#8217;re planning a vaginal delivery, here&#8217;s what you need to know about episiotomy and childbirth.
The episiotomy tradition
For many years, an episiotomy [...]]]></description>
			<content:encoded><![CDATA[<p>An episiotomy is an incision made in the tissue between the vaginal opening and anus (perineum) during childbirth. Although an episiotomy was once a routine part of childbirth, that&#8217;s no longer the case. If you&#8217;re planning a vaginal delivery, here&#8217;s what you need to know about episiotomy and childbirth.</p>
<h2>The episiotomy tradition</h2>
<p>For many years, an episiotomy was thought to help prevent more extensive vaginal tears during childbirth — and heal better than a natural tear. The procedure was also thought to reduce the risk of incontinence after childbirth and keep the bladder and rectum from drooping into the vagina.</p>
<p>Sounds reasonable, but researchers have found that routine episiotomies don&#8217;t prevent these problems after all. Recovery is uncomfortable, and sometimes the surgical incision is more extensive than a natural tear would have been. For some women, an episiotomy causes pain during sex in the months after delivery. An episiotomy also increases the risk of fecal incontinence after delivery.</p>
<h2>The new approach</h2>
<p>Researchers say there&#8217;s no need for a routine episiotomy, but the procedure is still warranted in some cases. Your health care provider may recommend an episiotomy if:</p>
<ul>
<li>Extensive vaginal tearing appears likely</li>
<li>Your baby is in an abnormal position</li>
<li>Your baby needs to be delivered quickly</li>
</ul>
<p>If you need an episiotomy, you&#8217;ll receive an injection of a local anesthetic to numb the tissue if you haven&#8217;t had any other type of anesthesia or your anesthesia is no longer numbing the area. You won&#8217;t feel your health care provider making the incision or repairing it after delivery.</p>
<h2>The role of tissue massage</h2>
<p>To soften the vaginal tissues for delivery, some health care providers suggest massaging the area between the vaginal opening and anus in the last weeks of pregnancy. This is known as perineal massage. Although there are no guarantees — and you don&#8217;t have to do it if the idea makes you uncomfortable — stretching the tissues may reduce vaginal trauma during delivery.</p>
<p>Start by washing your hands thoroughly with soap and hot water. Make sure your nails are trimmed. Then rub a mild lubricant, such as K-Y jelly, on your thumbs. Place your thumbs just inside your vagina and press downward toward your rectum. Hold for one to two minutes. Then, slowly massage the lower half of your vagina. Repeat the massage once a day for 10 minutes at a time until delivery.</p>
<p>Your partner can help, if you wish. It&#8217;s normal to feel a little burning or other discomfort as you stretch your perineum. Stop if you feel sharp pain.</p>
<h2>Healing from an episiotomy</h2>
<p>If you have an episiotomy or tear during delivery, the wound may hurt for a week or two — especially when you walk or sit. If the incision or tear is extensive, the tenderness may last longer. Any stitches used to repair the episiotomy will usually be absorbed on their own. In the meantime, you can help promote healing:</p>
<ul>
<li class="doublespace"><strong>Soothe the wound.</strong> Use an ice pack, or wrap ice in a washcloth. Chilled witch hazel pads may help, too. Witch hazel is the main ingredient in many hemorrhoid pads. You can find witch hazel pads in most pharmacies.</li>
<li class="doublespace"><strong>Keep the wound clean.</strong> Use a squirt bottle to rinse the tissue between the vaginal opening and anus with water after using the toilet. Soak in a warm tub.</li>
<li class="doublespace"><strong>Take the sting out of urination.</strong> Squat rather than sit to use the toilet. Pour warm water over your vulva as you&#8217;re urinating.</li>
<li class="doublespace"><strong>Prevent pain and stretching during bowel movements.</strong> Hold a clean pad firmly against the wound and press upward while you bear down. This will help relieve pressure on the wound.</li>
<li class="doublespace"><strong>Sit down carefully.</strong> To keep your bottom from stretching, squeeze your buttocks together as you sit down. If sitting is uncomfortable, use a doughnut-shaped cushion to ease the pressure.</li>
<li class="doublespace"><strong>Do your Kegels.</strong> These exercises help tone your pelvic floor muscles. Simply tighten your pelvic muscles as if you&#8217;re stopping your stream of urine. Starting about a day after delivery, try it for five seconds at a time, four or five times in a row. Work up to keeping the muscles contracted for 10 seconds at a time, relaxing for 10 seconds between contractions. Aim for at least three sets of 10 repetitions a day. You can do Kegels while standing, sitting or lying down — even while breast-feeding your baby.</li>
<li class="doublespace"><strong>Use medication as needed.</strong> Your health care provider may order prescription medications or recommend an over-the-counter pain reliever or stool softener.</li>
<li class="doublespace"><strong>Look for signs of infection.</strong> If the pain intensifies or the wound becomes hot, swollen and painful or produces a pus-like discharge, contact your health care provider.</li>
</ul>
<h2>Accept some uncertainty</h2>
<p>It&#8217;s important to go into labor with an open mind. It will take time for the baby to stretch the vaginal tissues to allow delivery, and sometimes the baby needs to be delivered before the vaginal tissues can stretch on their own. Count on your health care provider to respect your wishes about episiotomy — and to let you know when it&#8217;s the safest option for you or your baby.</p>
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		</item>
		<item>
		<title>Salmonella infection</title>
		<link>http://yeanny.com/salmonella-infection/</link>
		<comments>http://yeanny.com/salmonella-infection/#comments</comments>
		<pubDate>Wed, 02 Dec 2009 10:15:12 +0000</pubDate>
		<dc:creator>Yeanny</dc:creator>
		
		<category><![CDATA[internal medicine]]></category>

		<category><![CDATA[microbiology]]></category>

		<category><![CDATA[nutrition]]></category>

		<category><![CDATA[Antibiotic]]></category>

		<category><![CDATA[antidiarrheal]]></category>

		<category><![CDATA[food poisoning]]></category>

		<category><![CDATA[infection of GI tract]]></category>

		<category><![CDATA[salmonellosis]]></category>

		<category><![CDATA[stool]]></category>

		<guid isPermaLink="false">http://yeanny.com/?p=221</guid>
		<description><![CDATA[Salmonella infection is a common bacterial disease that affects the intestinal tract. Salmonella bacteria typically live in the intestines of animals and humans and are shed through feces. Humans become infected most frequently through contaminated water or food sources — such as poultry, meat and eggs.
Typically, people with salmonella infection develop diarrhea, fever and abdominal [...]]]></description>
			<content:encoded><![CDATA[<p>Salmonella infection is a common bacterial disease that affects the intestinal tract. Salmonella bacteria typically live in the intestines of animals and humans and are shed through feces. Humans become infected most frequently through contaminated water or food sources — such as poultry, meat and eggs.</p>
<p>Typically, people with salmonella infection develop diarrhea, fever and abdominal cramps within 12 to 72 hours. Signs and symptoms of salmonella infection generally last four to seven days. Most healthy people recover without specific treatment.</p>
<p>In some cases, the diarrhea associated with salmonella infection can be extremely dehydrating and require prompt medical attention. Life-threatening complications may also develop should the infection spread beyond your intestines. Your risk of salmonella infection is higher if you travel to countries with poor sanitation.</p>
<p>There are more than 2,000 varieties of salmonella bacteria, but only about a dozen of them cause illnesses in people. Most of these illnesses can be classified as gastroenteritis, often featuring severe diarrhea. But a few varieties of salmonella bacteria result in typhoid fever, a sometimes deadly disease that is more common in developing countries.</p>
<p><strong>Gastroenteritis</strong><br />
Salmonella-induced gastroenteritis is most often caused by eating raw or undercooked meat, poultry, eggs or egg products. The incubation period ranges from several hours to two days. Signs and symptoms may include:</p>
<ul>
<li>Nausea</li>
<li>Vomiting</li>
<li>Abdominal pain</li>
<li>Diarrhea</li>
<li>Fever</li>
<li>Chills</li>
<li>Headache</li>
<li>Muscle pains</li>
<li>Blood in the stool</li>
</ul>
<p><strong>Typhoid fever</strong><br />
Most people who develop typhoid fever in the United States have recently traveled in a country where the disease is more common. The incubation period ranges from five to 21 days following infection. Signs and symptoms may include:</p>
<ul>
<li>Diarrhea or constipation</li>
<li>Fever over 102 F (38.8 C)</li>
<li>Slightly raised, rose-colored spots on your upper chest</li>
<li>Cough</li>
<li>Mental confusion</li>
<li>A slowing of your heartbeat</li>
<li>Enlargement of your liver and spleen</li>
</ul>
<p>Salmonella infection itself isn&#8217;t life-threatening. However, in certain people — especially children, older adults, transplant recipients and people with a weakened immune system — the development of complications can be dangerous.</p>
<p><strong>Dehydration</strong><br />
If you can&#8217;t drink enough liquids to replace the fluid you&#8217;re losing from persistent diarrhea, you may become dehydrated. Warning signs include:</p>
<ul>
<li>Sunken eyes</li>
<li>Dry mouth and tongue</li>
<li>Reduced production of tears</li>
<li>Decreased urine output</li>
</ul>
<p><strong>Bacteremia</strong></p>
<p>If salmonella infection enters your bloodstream (bacteremia), it can infect tissues throughoutyour body, including:</p>
<ul>
<li>The tissues surrounding your brain and spinal cord (meningitis)</li>
<li>The lining of your heart or valves (endocarditis)</li>
<li>Your bones or bone marrow (osteomyelitis)</li>
</ul>
<p><strong>Reactive arthritis</strong><br />
People who have had salmonella are at higher risk of developing reactive arthritis. Also known as Reiter&#8217;s syndrome, reactive arthritis typically causes:</p>
<ul>
<li>Eye irritation</li>
<li>Painful urination</li>
<li>Painful joints</li>
</ul>
<p><strong>Medications</strong></p>
<ul>
<li><strong>Antidiarrheals.</strong> Medications like loperamide (Imodium) can help relieve cramping, but they may also prolong the diarrhea associated with salmonella infection.</li>
<li><strong>Antibiotics.</strong> If your doctor suspects that salmonella bacteria have entered your bloodstream, he or she may prescribe antibiotics to kill the bacteria.</li>
</ul>
<p>Salmonella infection is contagious, so take precautions to avoid spreading bacteria to others. Preventive methods are especially important when preparing food or providing care for infants, older adults and people with compromised immune systems.</p>
<p><strong>Wash your hands</strong><br />
Washing your hands thoroughly can help prevent the transfer of salmonella bacteria to your mouth or to any food you&#8217;re preparing. Wash your hands after you:</p>
<ul>
<li>Use the toilet</li>
<li>Change a diaper</li>
<li>Handle raw meat or poultry</li>
<li>Clean up pet feces</li>
<li>Touch reptiles or birds</li>
</ul>
<p><strong>Keep things separate</strong></p>
<ul>
<li>Store raw meat, poultry and seafood away from other foods in your refrigerator</li>
<li>If possible, have two cutting boards in your kitchen - one for raw meat and the other for fruits and vegetables</li>
<li>Never place cooked food on an unwashed plate that previously held raw meat</li>
</ul>
<p><strong>Avoid eating raw eggs</strong><br />
Cookie dough, homemade ice cream and eggnog all contain raw eggs. If you must consume raw eggs, ensure that they have been pasteurized.</p>
]]></content:encoded>
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		</item>
		<item>
		<title>Diarrhea-Antibiotic associated</title>
		<link>http://yeanny.com/diarrhea-antibiotic-associated/</link>
		<comments>http://yeanny.com/diarrhea-antibiotic-associated/#comments</comments>
		<pubDate>Wed, 02 Dec 2009 10:07:17 +0000</pubDate>
		<dc:creator>Yeanny</dc:creator>
		
		<category><![CDATA[internal medicine]]></category>

		<category><![CDATA[microbiology]]></category>

		<category><![CDATA[pharmacology]]></category>

		<category><![CDATA[acute diarrhea]]></category>

		<category><![CDATA[AIDS]]></category>

		<category><![CDATA[Antibiotics]]></category>

		<category><![CDATA[bowel perforation]]></category>

		<category><![CDATA[dehydration]]></category>

		<category><![CDATA[diarrhea]]></category>

		<category><![CDATA[erythromycin]]></category>

		<category><![CDATA[HIV]]></category>

		<category><![CDATA[lactobacillus acidophilus]]></category>

		<category><![CDATA[Probiotics]]></category>

		<category><![CDATA[salmonella]]></category>

		<category><![CDATA[toxic megacolon]]></category>

		<category><![CDATA[vancomycin]]></category>

		<guid isPermaLink="false">http://yeanny.com/?p=219</guid>
		<description><![CDATA[Antibiotic-associated diarrhea can cause signs and symptoms that range from mild to severe. Most often, you&#8217;ll have only a slight change in the bacteria in your digestive tract, which can cause loose stools or more bowel movements a day than are normal for you.
If you develop these problems, they&#8217;re likely to begin about five to [...]]]></description>
			<content:encoded><![CDATA[<p>Antibiotic-associated diarrhea can cause signs and symptoms that range from mild to severe. Most often, you&#8217;ll have only a slight change in the bacteria in your digestive tract, which can cause loose stools or more bowel movements a day than are normal for you.</p>
<p>If you develop these problems, they&#8217;re likely to begin about five to 10 days after you start antibiotic therapy and to end within two weeks after you stop taking antibiotics. Sometimes, however, diarrhea and other symptoms may not appear for days or even weeks after you&#8217;ve finished antibiotic treatment.</p>
<p>When the overgrowth of harmful bacteria is severe, you may have signs and symptoms of colitis or pseudomembranous colitis, such as:</p>
<ul>
<li>Frequent, watery diarrhea</li>
<li>Abdominal pain and cramping</li>
<li>Fever, often higher than 101 F (38.3 C)</li>
<li>Pus in your stool</li>
<li>Bloody stools</li>
<li>Nausea</li>
<li>Dehydration</li>
</ul>
<p>Most people experience an improvement within two weeks after beginning treatment for colitis or pseudomembranous colitis. However, sometimes signs and symptoms recur — usually within a month of the initial treatment — which means you may need to be treated a second or even a third time.</p>
<p><strong>Which antibiotics cause AAD?</strong><br />
Virtually any antibiotic can cause antibiotic-associated diarrhea, colitis or pseudomembranous colitis, but the most common culprits are ampicillin, clindamycin and cephalosporins such as cefpodoxime (Vantin).</p>
<p>Sometimes erythromycins (Erythrocin), quinolones (Cipro, Floxin) and tetracyclines also can cause antibiotic-associated diarrhea. Problems can occur whether you take the antibiotics by mouth or receive them by injection.</p>
<p>Call your doctor right away if you experience the following signs and symptoms:</p>
<ul>
<li>Several episodes of loose stools or watery diarrhea for two or more consecutive days</li>
<li>Fever</li>
<li>Severe abdominal pain or cramping</li>
<li>Pus or blood in your stool</li>
<li>Lightheadedness or dizziness</li>
</ul>
<p>These signs and symptoms may indicate a number of conditions, ranging from viral, bacterial or parasitic infections to inflammatory bowel disorders, such as ulcerative colitis or Crohn&#8217;s disease. In older adults with cardiovascular disease, low blood flow to the colon (ischemic colitis) also can cause these symptoms.</p>
<p>But if you&#8217;re currently taking antibiotics or have recently finished antibiotic therapy, it&#8217;s possible you have antibiotic-associated diarrhea. Your doctor can perform tests to determine the exact cause of your problem.</p>
<p>Mild antibiotic-associated diarrhea isn&#8217;t likely to cause any lasting problems. But pseudomembranous colitis can lead to life-threatening complications, including:</p>
<ul>
<li class="doublespace"><strong>A hole in your bowel (bowel perforation).</strong> This results from extensive damage to the lining of your large intestine. The greatest risk of a perforated bowel is that bacteria from your intestine will infect your abdominal cavity (peritonitis).</li>
<li class="doublespace"><strong>Toxic megacolon.</strong> In this condition, your colon becomes unable to expel gas and stool, causing it to become greatly distended (megacolon). Signs and symptoms of toxic megacolon include abdominal pain and swelling, fever and weakness. You may also become groggy or disoriented. Left untreated, your colon can rupture, causing bacteria from your colon to enter your abdominal cavity. A ruptured colon requires emergency surgery and in some cases may be fatal.</li>
<li class="doublespace"><strong>Dehydration.</strong> Severe diarrhea can lead to excessive loss of fluids and electrolytes — substances such as sodium, potassium and chloride, which are essential for transmitting nerve impulses, making your muscles contract, and maintaining proper levels of fluid in and around your cells. Extreme fluid loss can cause seizures and shock — a condition in which your tissues don&#8217;t receive enough oxygen. Signs and symptoms of dehydration include a very dry mouth, intense thirst, little or no urination, and extreme weakness.</li>
</ul>
<p><strong>Mild diarrhea</strong><br />
If you have mild diarrhea<strong>,</strong> your symptoms are likely to clear up within a few days to two weeks after your antibiotic treatment ends. In the meantime, your doctor may recommend drinking plenty of liquids to prevent dehydration and avoiding foods that may aggravate your symptoms. When diarrhea is more severe, your doctor may stop your antibiotic therapy and wait for your diarrhea to subside.</p>
<p><strong>Severe diarrhea</strong><br />
In cases of very severe diarrhea<strong>,</strong> colitis or pseudomembranous colitis, you&#8217;re likely to be treated with the drug metronidazole (Flagyl), which is usually taken in tablet form for 10 days. If metronidazole isn&#8217;t effective, or you&#8217;re pregnant or breast-feeding, you&#8217;ll receive another drug, vancomycin (Vancocin).</p>
<p>Both metronidazole and vancomycin are antibiotics that effectively control C. difficile. Vancomycin was once the drug of choice for treating antibiotic-associated diarrhea, but it&#8217;s very expensive and now usually reserved for the most resistant cases. However, vancomycin is recommended for pregnant and lactating women because metronidazole has not been proved safe in fetuses and infants.</p>
<p>Some people treated for pseudomembranous colitis have a recurrence of diarrhea and need further treatment.</p>
<p><strong>Probiotics: More research needed</strong><br />
The term &#8220;probiotic&#8221; means &#8220;for life.&#8221; It generally refers to concentrated supplements of beneficial bacteria similar to those that occur naturally in your intestinal tract. Most probiotic supplements are formulated to survive the digestive process and the highly acidic conditions in your stomach.</p>
<p>Probiotic supplements may help prevent antibiotic-associated diarrhea, but study results have been mixed. Some studies have shown probiotic supplements to be effective in preventing or reducing antibiotic-associated diarrhea, while others have not. More research is needed before probiotics can be routinely recommended for antibiotic-associated diarrhea.</p>
<p>Probiotic formulas are available in liquid and capsule form in drugstores and natural food stores and in some grocery stores. Many need refrigeration. In addition, commercial yogurt labeled as having live cultures contains certain &#8220;good&#8221; bacteria, such as Lactobacillus acidophilus, that may help reduce the incidence and severity of antibiotic-associated diarrhea.</p>
<p>Another probiotic, the yeast Saccharomyces boulardii, has been shown to help protect against pseudomembranous colitis. This yeast, taken orally, is used in Europe to help prevent antibiotic-associated diarrhea and may also prevent recurrences of the disease.</p>
<p>Capsules of S. boulardii are available in the dietary supplement Florastor, in natural food stores and some drugstores. Although S. boulardii rarely causes side effects, avoid it if you have a yeast allergy. And if you have HIV/AIDS, talk to your doctor before trying this product</p>
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		</item>
		<item>
		<title>Postterm pregnancy</title>
		<link>http://yeanny.com/postterm-pregnancy/</link>
		<comments>http://yeanny.com/postterm-pregnancy/#comments</comments>
		<pubDate>Mon, 30 Nov 2009 10:57:15 +0000</pubDate>
		<dc:creator>Yeanny</dc:creator>
		
		<category><![CDATA[obstetrics]]></category>

		<category><![CDATA[Contraction stress test]]></category>

		<category><![CDATA[fetal dysmaturity]]></category>

		<category><![CDATA[inducing labor]]></category>

		<category><![CDATA[LMP]]></category>

		<category><![CDATA[stillbirth]]></category>

		<guid isPermaLink="false">http://yeanny.com/?p=215</guid>
		<description><![CDATA[INTRODUCTION
Although pregnancy is said to last nine months, healthcare providers track pregnancy by weeks and days. The normal duration of pregnancy is approximately 37 to 42 weeks, with the estimated due date at 40 weeks or 280 days from the first day of the last menstrual period.
A postterm pregnancy, also called a prolonged pregnancy, is [...]]]></description>
			<content:encoded><![CDATA[<p><span class="h1">INTRODUCTION</span></p>
<p>Although pregnancy is said to last nine months, healthcare providers track pregnancy by weeks and days. The normal duration of pregnancy is approximately 37 to 42 weeks, with the estimated due date at 40 weeks or 280 days from the first day of the last menstrual period.</p>
<p>A postterm pregnancy, also called a prolonged pregnancy, is one that has extended beyond 42 weeks from the first day of the last menstrual period. As many as 10 percent of pregnancies are postterm.</p>
<p><span class="h2"><a name="H2"></a>Accurate dating</span> — It is essential to ensure that the pregnancy is in fact postterm. Ideally, an accurate gestational age is determined early in the pregnancy. In women who have regular menstrual periods, the date can often be reliably calculated based on the last period.</p>
<p>If there is uncertainty about the dates, or if the size of the woman&#8217;s uterus is larger or smaller than expected based on the date of the last period, the gestational age of the fetus and due date can be estimated based upon findings on fetal ultrasound examination. This estimate is most accurate when performed early in pregnancy; ultrasounds performed in the last half of pregnancy are less reliable for estimating the due date.</p>
<p><span class="h1"><a name="H3"></a>POSTTERM PREGNANCY CAUSES</span></p>
<p>In most cases, the cause of postterm pregnancy is unknown. There are some factors that place a woman at increased risk. The incidence is higher in first pregnancies and in women who have had a previous postterm pregnancy. Genetic factors may also play a role. One study showed an increased risk of postterm pregnancy in women who were, themselves, born postterm.</p>
<p>However, variations in when a woman ovulates can lead to errors in calculating the true duration of pregnancy and lead to over- and underestimations of when the baby is due. An ultrasound examination performed in the first one-half of pregnancy is the most reliable method of calculating the date the baby is due, especially in women with long or irregular menstrual cycles.</p>
<p><span class="h1"><a name="H4"></a>POSTTERM PREGNANCY RISKS</span></p>
<p>Pregnancy that continues beyond 42 weeks is associated with risks to the fetus and the mother.</p>
<p><span class="h2"><a name="H5"></a>Risks to the fetus</span></p>
<p><span class="h3"><a name="H6"></a>Stillbirth or neonatal death</span> — The incidence of stillbirth or infant death is increased in pregnancies that continue beyond 42 weeks. However, the risk is relatively small, with only 4 to 7 deaths per 1000 deliveries. By comparison, the risk of stillbirth or infant death in pregnancies between 37 and 42 weeks is 2 to 3 per 1000 deliveries.</p>
<p><span class="h3"><a name="H7"></a>Large body size</span> — Postterm fetuses have a greater chance of developing complications related to larger body size (called macrosomia), which is defined as weighing more than 4500 grams, or about 10 pounds. Complications can include prolonged labor, difficulty passing through the vagina, and birth trauma (eg, fractured bones or nerve injury) related to difficulty in delivering the shoulders (shoulder dystocia).</p>
<p><span class="h3"><a name="H8"></a>Fetal dysmaturity</span> — Also called &#8220;postmaturity syndrome,&#8221; this refers to a fetus whose growth in the uterus has been restricted, usually due to a problem with delivery of blood to the fetus through the placenta. This puts the fetus at increased risk for umbilical cord compression, problems after birth such as breathing problems, and long-term neurologic problems.</p>
<p><span class="h3"><a name="H9"></a>Meconium aspiration</span> — Beyond term, the fetus is more likely to have a bowel movement, called meconium, into the amniotic fluid. If the fetus is stressed, there is a chance it will inhale some of this meconium stained amniotic fluid; this can cause breathing problems or infection when the baby is born.</p>
<p><span class="h2"><a name="H10"></a>Risks to the mother</span> — Risks to the mother are related to the larger size of postterm infants, and include difficulties during labor, an increase in injury to the perineum (including the vagina, labia, and rectum), and an increased rate of cesarean birth with its associated risks of bleeding, infection, and injury to surrounding organs.</p>
<p><span class="h1"><a name="H11"></a>POSTTERM PREGNANCY TREATMENT</span></p>
<p><span class="h2"><a name="H12"></a>Antenatal fetal monitoring</span> — In most cases, a healthcare provider will recommend tests on the fetus if the pregnancy extends beyond the due date. These tests give information about the health of the fetus and about the risks or benefits of allowing the pregnancy to continue.</p>
<p>The American College of Obstetricians and Gynecologists has stated that it is only necessary to start antenatal fetal monitoring after 42 weeks (294 days) of gestation, although many obstetric care providers will start fetal testing at 41 weeks. Many experts recommend twice weekly testing, including a measurement of amniotic fluid volume. Testing may also include observing the fetus&#8217; heart rate using a fetal monitor (called a nonstress test) or observing the baby&#8217;s activity with ultrasound (called a biophysical profile).</p>
<p><span class="h3"><a name="H13"></a>Nonstress testing</span> — Nonstress testing is done by monitoring the baby&#8217;s heart rate with a small device that is placed on the mother&#8217;s abdomen. The device uses sound waves (ultrasound) to measure the baby&#8217;s heart rate over time, usually for 20 to 30 minutes. Normally, the baby&#8217;s baseline heart rate should be between 110 and 160 beats per minute and should increase above its baseline by at least 15 beats per minute for 15 seconds when the baby moves.</p>
<p>The test is considered reassuring (called &#8220;reactive&#8221;) if two or more fetal heart rate increases are seen within a 20 minute period. Further testing may be needed if these increases are not observed after monitoring for 40 minutes.</p>
<p><span class="h3"><a name="H14"></a>Biophysical profile</span> — A biophysical profile (BPP) score is calculated to assess the fetus&#8217; health. It consists of five components, nonstress testing and ultrasound measurement of four fetal parameters: fetal body movements, breathing movements, fetal tone (flexion and extension of an arm, leg, or the spine), and amniotic fluid volume (<a onclick="javascript:return viewImage('imageKey=OBGYN%2F15023');" href="http://www.uptodate.com/patients/content/image.do?imageKey=OBGYN%2F15023" target="_blank">table 1</a>). Each component is scored individually, 2 points if normal and 0 points if not normal. The maximum possible score is 10.</p>
<p>Amniotic fluid volume is an important variable in the BPP because a low volume (called oligohydramnios) may increase the risk of umbilical cord compression and may be a sign of changes in the feto-uteroplacental circulation. Amniotic fluid level can become reduced within a short time period, even a few days.</p>
<p><span class="h3"><a name="H15"></a>Contraction stress test</span> — A contraction stress test (CST) can also be done to assess fetal health. It involves giving an intravenous medication (oxytocin) to the mother to induce uterine contractions. The fetus&#8217; heart rate is monitored in response to the contractions. A fetus whose heart rate slows down during a CST may require a cesarean delivery.</p>
<p><span class="h2"><a name="H16"></a>Inducing labor</span> — The optimal time to deliver a baby in a woman who is postterm is sometimes hard to determine. The healthcare provider and woman must consider the risks and benefits of continuing the pregnancy, the results of antenatal testing, and the condition of the cervix (the lower part of the uterus, which opens into the vagina). Normally, the cervix begins to dilate (open) and efface (thin) towards the end of a woman&#8217;s pregnancy. Inducing labor is more likely to fail in women whose cervix is not dilated or thinned (called ripe), which could require the woman to undergo cesarean birth.</p>
<p>Most healthcare providers will induce labor if it does not begin spontaneously by 41 to 42 weeks of gestation. For a woman whose cervix is not ripe, labor can be induced with a medication applied directly to the cervix, which causes it to ripen. Cervical ripening may also be accomplished using mechanical methods such as laminaria (a small rod made of dried seaweed) or a Foley catheter bulb. Most women, including those whose cervix is ripe, will also require an intravenous medication, oxytocin, which stimulates the uterus to contract; uterine contractions further stimulate cervical dilation and effacement. If induction of labor does not completely dilate and efface the cervix, or if complications develop that require the baby to be delivered quickly, a cesarean delivery is usually performed.</p>
<p>Some patients may choose to have a cesarean delivery, especially if the fetus is macrosomic (defined as an estimated fetal weight of greater than or equal to 4500 grams [about 10 pounds]), they have a history of previous cesarean delivery, or for reasons of personal choice. It is important to understand the risks and benefits of cesarean delivery, and to discuss these issues with the physician who will be performing the procedure. (See <a href="http://www.uptodate.com/patients/content/topic.do?topicKey=%7ETAT8XlClj.WkA" target="_parent">&#8220;Patient information: Cesarean delivery&#8221;</a>.)</p>
<p><span class="h1"><a name="H17"></a>POSTTERM INFANTS</span></p>
<p>Some postterm infants have a distinctive appearance. The arms and legs may be long and thin. The skin may appear dry and parchment-like, with peeling and sometimes meconium staining. The skin may appear loose, especially over the thighs and buttocks. Scalp hair may be longer or thicker, and the fingernails and toenails may be long. Postterm newborns are typically very alert, and may have a &#8220;wide-eyed&#8221; look.</p>
<p>Few studies have examined long-term outcomes (eg, growth and development patterns, intelligence) of postterm infants. In general, the outcome appears similar in both postterm and term infants.</p>
<p><span class="h1"><a name="H18"></a>SUMMARY</span></p>
<ul class="bullet">
<li>A postterm pregnancy is one that extends beyond 42 weeks from the first day of the last menstrual period; as many as 10 percent of pregnancies are postterm.</li>
<li>The chance of postterm pregnancy is higher in first pregnancies and in women who have had a postterm pregnancy in the past. Genetic factors may also play a role. (See <a href="http://www.uptodate.com/patients/content/topic.do?topicKey=%7E9msJF6x6hG7HV#H3">&#8216;Postterm pregnancy causes&#8217;</a> above.)</li>
</ul>
<ul class="bullet">
<li>There are certain risks associated with postterm pregnancy. The chance of stillbirth or infant death increases slightly, and the fetus may develop problems due to having restricted space in the uterus or inhaling meconium (bowel movement). The increased size of the fetus can lead to complications, some of which can affect the mother during delivery. (See <a href="http://www.uptodate.com/patients/content/topic.do?topicKey=%7E9msJF6x6hG7HV#H4">&#8216;Postterm pregnancy risks&#8217;</a> above.)</li>
</ul>
<ul class="bullet">
<li>Tests are used to monitor the health of a postterm fetus and the safety of allowing the pregnancy to continue. (See <a href="http://www.uptodate.com/patients/content/topic.do?topicKey=%7E9msJF6x6hG7HV#H12">&#8216;Antenatal fetal monitoring&#8217;</a> above.)</li>
</ul>
<ul class="bullet">
<li>For most women, labor is induced if it has not occurred by 41 to 42 weeks. Some women will elect to have a cesarean delivery if the fetus has grown to a very large size. (See <a href="http://www.uptodate.com/patients/content/topic.do?topicKey=%7E9msJF6x6hG7HV#H16">&#8216;Inducing labor&#8217;</a> above.)</li>
</ul>
<ul class="bullet">
<li>Some postterm infants have a distinctive appearance, with long and thin arms, dry and sometimes loose-appearing skin, and longer hair and nails. Postterm infants tend to be very alert at birth. (See <a href="http://www.uptodate.com/patients/content/topic.do?topicKey=%7E9msJF6x6hG7HV#H17">&#8216;Postterm infants&#8217;</a> above.)</li>
</ul>
]]></content:encoded>
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		</item>
		<item>
		<title>Postmaturity, Why is this a labor challenge?</title>
		<link>http://yeanny.com/postmaturity-why-is-this-a-labor-challenge/</link>
		<comments>http://yeanny.com/postmaturity-why-is-this-a-labor-challenge/#comments</comments>
		<pubDate>Mon, 30 Nov 2009 10:51:05 +0000</pubDate>
		<dc:creator>Yeanny</dc:creator>
		
		<category><![CDATA[obstetrics]]></category>

		<category><![CDATA[pediatrics]]></category>

		<category><![CDATA[amniotic fluid]]></category>

		<category><![CDATA[asphyxia]]></category>

		<category><![CDATA[labor and delivery]]></category>

		<category><![CDATA[meconium aspiration]]></category>

		<category><![CDATA[natural birthing]]></category>

		<category><![CDATA[neonatal hypoglycemia]]></category>

		<category><![CDATA[overdue]]></category>

		<category><![CDATA[post mature]]></category>

		<category><![CDATA[postmaturity]]></category>

		<category><![CDATA[risk]]></category>

		<guid isPermaLink="false">http://yeanny.com/?p=212</guid>
		<description><![CDATA[Postmaturity
from The Merk Manual&#8230;&#8221;An uncommon syndrome of failing placental function and fetal jeopardy that occurs after 42 wk.&#8221;
In plain English, this means your baby is not able to get what he needs because the placenta is not working right any more. Babies who are postmature are sick because they are no longer being properly nourished.
When [...]]]></description>
			<content:encoded><![CDATA[<h2>Postmaturity</h2>
<p align="justify"><em>from <span style="text-decoration: underline;">The Merk Manual</span></em>&#8230;&#8221;An uncommon syndrome of failing placental function and fetal jeopardy that occurs after 42 wk.&#8221;</p>
<p align="justify">In plain English, this means your baby is not able to get what he needs because the placenta is not working right any more. Babies who are postmature are sick because they are no longer being properly nourished.</p>
<p align="justify">When born, a postmature baby will seem alert, but is very lean (the skin may be hanging on the body) because the baby was living off his own fat supplies for nourishment. Postmaturity has a range of symptoms including the loss of subcutaneious fat, dry cracked skin, meconium staining, birth asphyxia and respiratory distress.</p>
<h2>Why is this a labor challenge?</h2>
<p align="justify">Caregivers begin assessing the health status of a baby for postmaturity when they get close to being <a href="http://www.birthingnaturally.net/birth/challenges/overdue.html">overdue</a>. There are many ways to assess fetal well being, and there is some evidence this surveillance can detect when something is wrong. However, there is very little evidence that using these surveillance methods improves outcomes or reduces the risk for post-term (overdue) pregnancies.</p>
<p align="justify">If at anytime the results of a non-stress or stress test or a biophysical profile indicate that there is cause for concern, your caregiver will recommend immediate induction. If your body does not appear able to successfully survive labor, your caregiver may recommend a cesarean surgery.</p>
<p align="justify">According to the Merk Manual, babies who are post mature are at a higher risk of:</p>
<ul>
<li>
<p align="justify">Asphyxia during labor (they cannot get oxygen because the placenta is not working properly)</p>
</li>
<li>
<p align="justify">Meconium aspiration syndrome (they may choke on their own first bowel movements because of a lessened amount of amniotic fluid and increased amount of bowel movements in utero)</p>
</li>
<li>
<p align="justify">Neonatal hypoglycemia (because their bodies do not have sufficient stores of fat to maintain blood glucose levels).</p>
</li>
</ul>
<h2>Coaching Solutions</h2>
<p align="justify">True post-maturity is rare, be sure to get a second opinion before deciding to induce labor.</p>
<p align="justify">Use the least restricting methods of induction first, using other methods if necessary.</p>
<p align="justify">Be sure to stay aware of the baby&#8217;s health.</p>
<h2>Things to discuss with your caregiver:</h2>
<ul>
<li>
<p align="justify">Be sure to keep yourself well hydrated. Studies have shown that drinking water increases the amount of amniotic fluid. If you are dehydrated at a prenatal appointment, the lower fluid volume may cause your caregiver to become concerned about postmaturitiy.</p>
</li>
<li>
<p align="justify">When you and your caregiver are confident your baby is postmature, you can discuss options for how to begin labor. Because postmature babies are at increased risk for asphyxia and meconium aspiration, you may have fewer options about how your caregiver helps you in labor. For example, it may be recommended you not use certain medications, or that you only have a &#8220;trial&#8221; of contractions to determine if your baby is handling them well before deciding to continue an induction.</p>
</li>
</ul>
<p><em>References:</em><br />
Carlomagno G, Candussi G, Zavino S, Primerano MR. Postmaturity: how far is it a clinical entity in its own right? Clin Exp Obstet Gynecol. 1996;23(1):41-7.<br />
Enkin, Keirse, Nilson, Crowther, Duley, Hodnett and Hofmeyr. A guide to effective care in pregnancy and childbirth Third Edition. 2000. Oxford: Oxford University Press.</p>
]]></content:encoded>
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		<item>
		<title>Braxton Hicks or True Labor Contractions?</title>
		<link>http://yeanny.com/braxton-hicks-or-true-labor-contractions/</link>
		<comments>http://yeanny.com/braxton-hicks-or-true-labor-contractions/#comments</comments>
		<pubDate>Fri, 20 Nov 2009 10:32:00 +0000</pubDate>
		<dc:creator>Yeanny</dc:creator>
		
		<category><![CDATA[obstetrics]]></category>

		<category><![CDATA[braxton hicks contraction]]></category>

		<category><![CDATA[false labour]]></category>

		<category><![CDATA[in labor and delivery]]></category>

		<category><![CDATA[true labor]]></category>

		<guid isPermaLink="false">http://yeanny.com/?p=209</guid>
		<description><![CDATA[Before &#8220;true&#8221; labor begins, you may have &#8220;false&#8221; labor pains, also known as Braxton Hicks contractions. These irregular uterine contractions are perfectly normal and may start to occur as early as the second trimester, although they are more common during the third trimester of pregnancy. They are your body&#8217;s way of getting ready for the &#8220;real [...]]]></description>
			<content:encoded><![CDATA[<p>Before &#8220;true&#8221; labor begins, you may have &#8220;false&#8221; labor pains, also known as Braxton Hicks contractions. These irregular uterine contractions are perfectly normal and may start to occur as early as the second trimester, although they are more common during the third trimester of pregnancy. They are your body&#8217;s way of getting ready for the &#8220;real thing.&#8221;</p>
<h3>What Do Braxton Hicks Contractions Feel Like?</h3>
<p align="left">Braxton Hicks contractions can be described as tightening in the abdomen that comes and goes. These contractions are typically not painful and do not occur at regular intervals. They do not get closer together, do not increase with walking, do not increase in how long they last, and do not feel stronger over time as they do when you are in true labor.</p>
<h3>What Do True Labor Contractions Feel Like?</h3>
<p>The way a true labor contraction feels is different for each woman and may feel different from one pregnancy to the next. Labor contractions cause discomfort or a dull ache in your back and/or lower abdomen, along with pressure in the pelvis. Some women may also feel pain in their sides and thighs. Some women describe contractions as strong menstrual cramps, while others describe them as strong waves that feel like diarrhea cramps.</p>
<h3>How Do I Know When Contractions Indicate I Am in True Labor?</h3>
<p align="left">To figure out if the contractions you are feeling are the real thing and you&#8217;re going into labor, ask yourself the following questions.</p>
<table border="1" cellspacing="0" cellpadding="2">
<tbody>
<tr>
<td colspan="38" width="38%" valign="top">
<p align="left"><strong>Contraction Characteristics</strong></p>
</td>
<td valign="top">
<p align="left"><strong>False Labor</strong></p>
</td>
<td valign="top">
<p align="left"><strong>True Labor</strong></p>
</td>
</tr>
<tr>
<td colspan="38" width="38%" valign="top">
<p align="left"><strong>How often do the contractions occur?</strong></p>
</td>
<td valign="top">
<p align="left">Contractions are often irregular and do not get closer together</p>
</td>
<td valign="top">
<p align="left">Contractions come at regular intervals and last about 30-70 seconds. As time goes on, they get closer together.</p>
</td>
</tr>
<tr>
<td colspan="38" width="38%" valign="top">
<p align="left"><strong>Do they change with movement?</strong></p>
</td>
<td valign="top">
<p align="left">Contractions may stop when you walk or rest, or may even stop if you change positions</p>
</td>
<td valign="top">
<p align="left">Contractions continue despite movement or changing positions</p>
</td>
</tr>
<tr>
<td colspan="38" width="38%" valign="top">
<p align="left"><strong>How strong are they?</strong></p>
</td>
<td valign="top">
<p align="left">Contractions are usually weak and do not get much stronger. Or they may be strong at first and then get weaker.</p>
</td>
<td valign="top">
<p align="left">Contractions steadily increase in strength</p>
</td>
</tr>
<tr>
<td colspan="38" width="38%" valign="top">
<p align="left"><strong>Where do you feel the pain?</strong></p>
</td>
<td valign="top">
<p align="left">Contractions are usually only felt in the front of the abdomen or pelvic region</p>
</td>
<td valign="top">
<p align="left">Contractions usually start in the lower back and move to the front of the abdomen</p>
</td>
</tr>
</tbody>
</table>
<p align="left">If you have signs of true labor, contact your health care provider immediately. But if you&#8217;re unsure, call your health care provider anyway. If you are experiencing any of the following you may be in true labor.</p>
<ul>
<li>Contractions (tightening of the muscles in the uterus which cause discomfort or a dull ache in the lower abdomen) every 10 minutes or more than five contractions in an hour.</li>
<li>Regular tightening or pain in your back or lower abdomen.</li>
<li>Pressure in the pelvis or vagina.</li>
<li>Menstrual-like cramps.</li>
<li>Bleeding.</li>
<li>Fluid leak.</li>
<li>Flu-like symptoms such as nausea, vomiting, or diarrhea.</li>
</ul>
<p align="left">In contrast, if you are having Braxton Hicks contractions, you really don&#8217;t need to do anything unless they are causing you discomfort. If they are making you uncomfortable try the following:</p>
<ul>
<li>Take a walk. False labor contractions often stop when you change position or get up and walk.</li>
<li>Get some sleep or rest.</li>
<li>Relax.</li>
<li>Drink water, juice, or herbal tea.</li>
<li>Eat a snack or small meal.</li>
<li>Get a massage.</li>
</ul>
<h3>I Sometimes Have Pain on the Side of My Stomach. Is This True Labor?</h3>
<p align="left">Probably not. Sharp, shooting pains on either side of your abdomen (called round ligament pain) that travel into the groin may result from stretching ligaments that support your growing uterus.</p>
<p align="left">To ease the discomfort in your sides:</p>
<ul>
<li>Try changing your position or activity.</li>
<li>Make sure you are drinking enough fluids (at least 6 to 8 glasses of water, juice, or milk per day).</li>
<li>Try to rest.</li>
</ul>
<h3>I Am Afraid to Keep Bothering My Health Care Provider With &#8220;False Alarms.&#8221; When Should I Call My Health Care Provider?</h3>
<p align="left">Your health care provider is available any time to answer your questions and to ease your concerns about whether or not your contractions are signs of true or false labor. Don&#8217;t be afraid to call your provider if you are not sure what it is you are feeling. He or she may ask you some questions to help determine if you are truly in labor. If there&#8217;s any question at all, it&#8217;s better to be evaluated by your health care provider.</p>
<p align="left">It is essential to call your health care provider at any time if you have:</p>
<ul>
<li>Any vaginal bleeding.</li>
<li>Continuous leaking of fluid or wetness, or if your water breaks (can be felt as a &#8220;gushing&#8221; of fluid).</li>
<li>Strong contractions every 5 minutes for an hour.</li>
<li>Contractions that you are unable to &#8220;walk through.&#8221;</li>
<li>A noticeable change in your baby&#8217;s movement or if you feel less than 10 movements every two hours.</li>
<li>Any symptoms of contractions if you are not yet 37 weeks.</li>
</ul>
]]></content:encoded>
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		</item>
		<item>
		<title>Sleep and baby massage</title>
		<link>http://yeanny.com/sleep-and-baby-massage/</link>
		<comments>http://yeanny.com/sleep-and-baby-massage/#comments</comments>
		<pubDate>Fri, 20 Nov 2009 10:25:48 +0000</pubDate>
		<dc:creator>Yeanny</dc:creator>
		
		<category><![CDATA[Others]]></category>

		<category><![CDATA[pediatrics]]></category>

		<category><![CDATA[baby]]></category>

		<category><![CDATA[bonding]]></category>

		<category><![CDATA[gain weight]]></category>

		<category><![CDATA[intuition]]></category>

		<category><![CDATA[massage]]></category>

		<category><![CDATA[massage oil]]></category>

		<category><![CDATA[premature]]></category>

		<category><![CDATA[sleep well]]></category>

		<guid isPermaLink="false">http://yeanny.com/?p=206</guid>
		<description><![CDATA[
Getting a baby to sleep so they can get a good nights rest          is often a new parents&#8217; greatest challenge. There has been a lot of          research done on massage with hospitalized babies, who are generally small [...]]]></description>
			<content:encoded><![CDATA[<p><!-- start behind.tpl --></p>
<p><strong class="bold">Getting a baby to sleep so they can get a good nights rest          is often a new parents&#8217; greatest challenge.</strong> There has been a lot of          research done on massage with hospitalized babies, who are generally small          and vulnerable.</p>
<p><strong class="bold">Research has established that hospitalized babies grow          faster if they are massaged correctly.</strong> This involves using oil and          a firm yet gently stroking (light, tickling touch isn&#8217;t recommended).</p>
<p><strong class="bold">At first, the researchers thought that the massaged          babies were gaining more weight because they were sleeping more.</strong> When          they did video studies they found that these tiny, massaged babies actually          spent more time in quiet, unstressed, alert states, and their sleep time          was deeper and more restful. This meant better, more organized sleep/wake          patterns. This has been noticed in all babies who are massaged.*</p>
<p><strong class="bold">Baby Massage: A Video for Loving Parents - is intended          for the parents at home with a baby.</strong> These wonderful, ordinary babies          have not been studied as much, but the results are the same. This is great          news for parents who are trying to get a nap in or a good night of rest.          If your baby has a routine fussy time in late afternoon doing the massage          about an hour before it usually starts can often avert it altogether.</p>
<p><strong class="bold">If you are a working parent, doing a massage right after          getting home will help you to reconnect with your baby and you can all          relax.</strong> Once you and the baby have developed a routine you will have          a skill that DOES quiet your upset child. There will be times when this          is just what is needed; not food, not a fresh diaper, but soothing, relaxing          touch &#8230; for your child to be comfortable and &#8230; fall &#8230; asleep.</p>
<p><strong class="bold">Little babies sleep when they need to sleep, if they          possible can.</strong> You can make your child comfortable. Even if other circumstances          are new and stimulating or distressing, your regular, routine massage          will be something your baby can count on. If you massage your baby every          day, there will be a day (WE PROMISE!) when massage will be the trick          that &#8220;helps&#8221; your baby sleep.</p>
<p><span style="font-size: xx-small;"> *<strong> From the Touch Research Institute</strong><br />
Effects of tactile/kinesthetic stimulation on the clinical course and sleep/wake behavior of preterm neonates (see our <a href="http://www.babymassage.net/web.html">links page</a>). </span> <!-- end behind.tpl --></p>
]]></content:encoded>
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		</item>
		<item>
		<title>What Is an ECG?</title>
		<link>http://yeanny.com/what-is-an-ecg/</link>
		<comments>http://yeanny.com/what-is-an-ecg/#comments</comments>
		<pubDate>Fri, 20 Nov 2009 09:38:18 +0000</pubDate>
		<dc:creator>Yeanny</dc:creator>
		
		<category><![CDATA[cardiology]]></category>

		<category><![CDATA[ECG]]></category>

		<category><![CDATA[electrocardiography]]></category>

		<category><![CDATA[heart's electrical signals]]></category>

		<category><![CDATA[stress test]]></category>

		<guid isPermaLink="false">http://yeanny.com/?p=204</guid>
		<description><![CDATA[A Healthy Heartbeat
The heart is a beating muscle that pumps oxygen and nutrient rich blood throughout the body. Each beat is stimulated by electrical signals that pass through the heart muscle, or myocardium.
Performing an ECG or EKG
In order to examine the function of the heart, a doctor may perform a test called an electrocardiogram or [...]]]></description>
			<content:encoded><![CDATA[<h3>A Healthy Heartbeat</h3>
<p>The heart is a beating muscle that pumps oxygen and nutrient rich blood throughout the body. Each beat is stimulated by electrical signals that pass through the heart muscle, or myocardium.</p>
<h3>Performing an ECG or EKG</h3>
<p>In order to examine the function of the heart, a doctor may perform a test called an electrocardiogram or ECG (also referred to as an EKG). During this test, electrodes are placed on the chest and recordings are then made of the heart&#8217;s electrical signals. Sometimes the electrodes are also placed on the arms and legs.</p>
<h3>The Heart&#8217;s Electrical Signals</h3>
<p>The electrical signals follow a set pathway through the heart beginning at a spot called the SA node, which is located in the top right chamber, or atrium. The signal then branches out through both right and left atria, which contract and push blood into the lower chambers, or ventricles.</p>
<p>The electrical signal also passes into the ventricles via the AV node, and then travels down the tissue that separates these two lower chambers. Finally, the signal travels back up the ventricles, which contract and pump blood to the lungs and body.</p>
<h3>If Electrical Signals Are Abnormal</h3>
<p>Variations from the normal electrical pattern may indicate damage to the heart due to a heart attack or heart disease.</p>
<h3>What Is a Stress Test?</h3>
<p>Often a patient will be required to perform a stress test during an ECG. A stress test usually involves walking or running on a treadmill at progressively increasing intensities while recording an ECG. This test allows a doctor to examine the heart&#8217;s electrical activity during the stress of exercise.</p>
]]></content:encoded>
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		</item>
		<item>
		<title>MSCT matches cardiac MRI for emergency myocardial infarction assessment</title>
		<link>http://yeanny.com/msct-matches-cardiac-mri-for-emergency-myocardial-infarction-assessment/</link>
		<comments>http://yeanny.com/msct-matches-cardiac-mri-for-emergency-myocardial-infarction-assessment/#comments</comments>
		<pubDate>Fri, 20 Nov 2009 08:50:37 +0000</pubDate>
		<dc:creator>Yeanny</dc:creator>
		
		<category><![CDATA[cardiology]]></category>

		<category><![CDATA[radiology]]></category>

		<category><![CDATA[angiography]]></category>

		<category><![CDATA[coronary angioplasty]]></category>

		<category><![CDATA[MCI]]></category>

		<category><![CDATA[MRI]]></category>

		<category><![CDATA[MSCT]]></category>

		<category><![CDATA[Myocardial infarction]]></category>

		<category><![CDATA[reperfusion]]></category>

		<guid isPermaLink="false">http://yeanny.com/?p=202</guid>
		<description><![CDATA[Multislice CT is just as accurate as MRI in assessing myocardial infarct size in an emergency setting, according to a recent study conducted by researchers in France and the U.S. The latest data validate previous findings suggesting delayed-enhancement myocardial CT correlates well with measures of infarction size done with cardiac MR.
Infarct size is one of [...]]]></description>
			<content:encoded><![CDATA[<p><span class="article-text"><span id="113619_1339661_1.0">Multislice CT is just as accurate as MRI in assessing myocardial infarct size in an emergency setting, according to a recent study conducted by researchers in France and the U.S. The latest data validate previous findings suggesting delayed-enhancement myocardial CT correlates well with measures of infarction size done with cardiac MR.</p>
<p>Infarct size is one of the most important predictors of long-term left ventricular function in patients with an acute myocardial infarction. Imaging of myocardial infarct size in the emergency setting remains challenging, however. Current imaging gold standards — delayed-enhancement MR and nuclear medicine studies — are difficult to perform in unstable patients.</p>
<p>MSCT&#8217;s speed and simplicity even at the acute phase led researchers to determine whether it could do equally as well or better than MRI, said principal investigator Dr. Loic Boussel, a radiologist at the VA Medical Center in San Francisco.</p>
<p>Boussell and colleagues at the Université Claude Bernard in Lyon enrolled 19 patients with acute myocardial infarction who underwent delayed-enhancement MSCT immediately after coronary angioplasty and delayed-enhancement MRI within eight days of angioplasty.</p>
<p>The investigators found that delayed-enhancement MSCT allows accurate visualization of early myocardial contrast uptake compared with delayed-enhancement MRI and does not require an additional contrast injection after angioplasty. They published their findings in the August issue of the <em>American Journal of Roentgenology</em> (2008;191:441-447).</p>
<p>Mean signal intensity on delayed-enhancement CT was higher in infarcted myocardium than in healthy tissue. The researchers also found significant agreement between CT and MRI for the number of segments involved, transmural extent of enhancement, and infarct size. The findings could be reliably reproduced among observers. CT&#8217;s sensitivity and specificity were 87.6% and 97.7%, respectively, for the classification of the volume of the myocardial infarct when compared with MRI. All correlations were statistically significant (<em>p</em>&lt;0.0001).</p>
<p>MSCT seems just as accurate as MRI in the assessment of myocardial infarct size in patients with a low thrombolysis in myocardial infarction score on admission when performed immediately after a successful angioplasty, said Boussel, who was a radiologist at the University of California, San Francisco when performing the study.</p>
<p>Imagers should bear in mind that CT may underestimate the no-reflow phenomenon — a deficient reperfusion of previously ischemic tissue after angioplasty. One of CT&#8217;s main strengths, however, is that myocardial enhancement remains detectable even 45 minutes after directed contrast injection during angioplasty, Boussel said.</p>
<p>&#8220;CT appears to be a useful and practical technique with which to assess myocardial infarct size in the emergency setting,&#8221; he said.</p>
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		<title>Immunization schedule</title>
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		<pubDate>Thu, 19 Nov 2009 04:02:43 +0000</pubDate>
		<dc:creator>Yeanny</dc:creator>
		
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