Review Question - QID 110016

A newborn male infant is assessed after birth. He was born to a G1P1 Rh- mother at 38 weeks gestation. The delivery was prolonged and maternal blood loss was estimated to be 500 mL. The mother received regular prenatal follow-up but did not take folic acid or prenatal vitamins. The child is arousable and demonstrates peripheral cyanosis. He is otherwise well and is sent to the newborn nursery. On day 4 in the newborn nursery, laboratory values are ordered and return as seen below:

Hemoglobin: 8 g/dL
Hematocrit: 36%
Leukocyte count: 6,500/mm^3 with normal differential
Platelet count: 197,000/mm^3
Mean corpuscular volume: 111 µm^3
Bilirubin: 9 mg/dL

His temperature is 98.0°F (36.7°C), blood pressure is 72/38 mmHg, pulse is 160/min, respirations are 66/min, and oxygen saturation is 95% on room air. Physical exam is notable for a small infant with peripheral cyanosis, yellowing of the skin, an absence of scleral icterus, and the finding in Figure A. Which of the following is associated with the most likely explanation of this patient's laboratory abnormalities?