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Review Question - QID 210027

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QID 210027 (Type "210027" in App Search)
A 37-year-old G1P1 woman gives birth to a male infant at 36 weeks gestation. The patient had an uncomplicated Caesarean delivery and gave birth to a 6-pound infant. The patient has a past medical history of cocaine and heroine use but states she quit 8 years ago. She also suffers from obesity and type II diabetes mellitus. Her blood sugar is well controlled with diet and exercise alone during the pregnancy. Her temperature is 98.4°F (36.9°C), blood pressure is 167/102 mmHg, pulse is 90/min, respirations are 16/min, and oxygen saturation is 99% on room air. Laboratory values for her infant are ordered as seen below.

Hemoglobin: 16 g/dL
Hematocrit: 48%
Leukocyte count: 6,500/mm^3 with normal differential
Platelet count: 197,000/mm^3

Which of the following is the most likely cause of this infant's laboratory abnormalities?

Advanced maternal age

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Caesarean section delivery

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Gestational age

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Maternal diabetes

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Maternal hypertension

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Select Answer to see Preferred Response

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This patient is presenting with neonatal polycythemia which can occur secondary to maternal hypertension.

Neonatal polycythemia is common when there is a decreased delivery of blood to the placenta. This can occur in untreated diabetes, preeclampsia, smoking, and hypertension. Symptoms include respiratory distress, hypoglycemia, and neurologic manifestations.

Incorrect Answers:
Answer 1: Advanced maternal age is a risk factor for genetic abnormalities but is not a prominent risk factor for neonatal polycythemia.

Answer 2: Caesarean section delivery is a risk factor for other complications (neonatal respiratory distress or poorly colonized infant gastrointestinal tract) but not for neonatal polycythemia.

Answer 3: Gestational age of 36 weeks would not be a risk factor for neonatal polycythemia. At this age, most organ systems are completely developed.

Answer 4: Maternal diabetes is a risk factor for neonatal polycythemia; however, this patient's diabetes is well controlled with diet and exercise.

Bullet Summary:
Neonatal polycythemia can occur in untreated diabetes, preeclampsia, smoking, and HTN.

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