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Oligohydramnios

Summary of Oligohydramnios
Oligohydramnios is the presence of too little amniotic fluid in the amniotic sac. Causes include placental insufficiency, and any fetal condition that decreases fetal urination like posterior urethral valves or bilateral renal agenesis. It is diagnosed on ultrasound by measuring the deepest fluid pocket in all four quadrants of the amnion and calculating the amniotic fluid index. A value of less than five centimeters is diagnostic. The condition may trigger the Potter sequence (aka Potter syndrome) and cause in utero renal failure and pulmonary hypoplasia

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Pathology

Reproductive system

Male and female reproductive system disorders
Male reproductive system disorders
Female reproductive system disorders
Reproductive system pathology review

Assessments
Oligohydramnios

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High Yield Notes
17 pages
Flashcards

Oligohydramnios

10 flashcards
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are a urinary malformation of male fetuses that may result in oligohydramnios.

Questions

USMLE® Step 1 style questions USMLE

1 questions

USMLE® Step 2 style questions USMLE

2 questions
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A 38-year-old woman, gravida 3, para 2, comes to the office at 20 weeks' gestation for a routine obstetrical appointment. Her pregnancy has been uncomplicated thus far. She does not report taking any medications other than her prenatal vitamins and denies any tobacco, alcohol, or illicit drug use. During her scheduled ultrasound, visualization of the fetus is difficult due to a decrease in amniotic fluid volume. Which of the following is the most likely condition affecting the fetus? 

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