Polyhydramnios

Summary of Polyhydramnios
Normally, the fetus in utero both urinates into and swallows the amniotic fluid. This keeps the volume of amniotic fluid constant. Polyhydramnios describes an excess of amniotic fluid in the amniotic sac. It is caused by fetal anomalies like esophageal atresia and anencephaly that result in inability to swallow the fluid, or with maternal diabetes, fetal anemia, or multiple gestations. It is diagnosed by checking the amniotic fluid, the deepest single vertical amniotic fluid pocket in each of the four uterus quadrants, via ultrasound. An index of >25 centimeters is considered polyhydramnios.

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Pathology

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Polyhydramnios

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High Yield Notes
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Flashcards

Polyhydramnios

11 flashcards
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An amniotic fluid index of greater than centimeters is diagnosed as polyhydramnios.

Questions

USMLE® Step 1 style questions USMLE

1 questions

USMLE® Step 2 style questions USMLE

2 questions
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A 3-day-old girl comes to the emergency department because of bilious vomiting. There was polyhydramnios detected on antenatal ultrasound. An X-ray is performed and shows a blind loop of the duodenum and gastric dilatation, which is characterized by a "double bubble" sign. Which of the following is the most likely diagnosis? 

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