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Obstetrics

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Question
Answer
What is the average volume of amniotic fluid at term   800 mL  
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How is oligohydramnios determined   Identification of the largest pocket of fluid measuring less than 2cmx 2cm or the total of 4 quadrants less than 5 cm  
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What is oligohydramnios associated with   SGA fetus, renal tract abnormalities (renal agenesis), and urinary tract dysplasia  
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The clinical manifestation of oligohydramnios is a direct result of __   The impairment of urine flow ot the amniotic fluid in the late part of the first half of pregnancy or during the second and third trimesters  
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What is the most common autosomal trisomy and what is the rate   Trisomy 21 (Down syndrome) 1 in 600 live births  
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What is the second most common autosomal trisomy and what is the rate   Trisomy 18 (Edward’s syndrome) 1 in 6000-8000 live births  
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Turner’s syndrome is associated with an average birthweight of approximately __ below average   400g  
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Fetuses with neural tube defects are frequently   IUGR weighing approximately 250g less than controls  
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Partial or complete detachment of placenta from uterine wall, after 20 weeks gestation   Abruptio Placenta  
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What are some risk factors of abruptio placenta   Cocaine use, maternal hypertension, trauma  
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Placenta previa is __ bleeding   Painless/silent  
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Placenta abruption is __ bleeding   painful  
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When is amniocentesis performed?   15-20 weeks for karyotyping (for Down syndrome)  
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Created by: Abarnard
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