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USMLE-Rx Step 2 Qmax Challenge #21161

Check out today’s Step 2 CK Qmax Question Challenge.

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After an uncomplicated pregnancy and cesarean section for breech presentation, twins are born at 32 weeks’ gestation to a 24-year-old primigravida mother. Twin A weighs 1610 g (3.5 lb) and has Apgar scores of 8 and 9 at 1 and 5 minutes, respectively. Twin B weighs 1600 g (3.5 lb) and has Apgar scores of 7 and 8 at 1 and 5 minutes, respectively. Within minutes of birth, twin B becomes mildly cyanotic and tachypneic with subcostal retractions, expiratory grunting, and nasal flaring. Twin B’s blood pressure is 58/39 mm Hg, heart rate is 130/min, respiratory rate is 100/min, and temperature is 37.0°C (98.6°F). Twin B is intubated and given 70% oxygen.

Compared to twin A, twin B is at greater risk of developing which of the following?

A. Apnea of prematurity
B. Gastroesophageal reflux disease
C. Hyperbilirubinemia
D. Intraventricular hemorrhage
E. Retinopathy of prematurity

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This practice question is an actual question from the USMLE-Rx Step 2 CK test bank. Get more Step 2 CK study help atUSMLE-Rx.com.

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