Review Question - QID 109379

A seven-day-old female presents to the emergency department for bloody stools. The patient was born at 39 weeks gestation to a 30-year-old primigravid via vaginal delivery. The patient’s mother declined all prenatal testing and delivered at home due to personal preference. She reports that the patient appeared well after delivery. The patient is being exclusively breastfed, and her mother reports that feeding is going well. The patient feeds every two hours and usually passes 3-4 loose, dark yellow stools per day. The patient’s mother reports that one day ago the patient began passing blood-streaked stools that have since become grossly bloody. She has also noticed that the patient has become more lethargic and has less interest in feeding. The patient’s mother denies any family history of bleeding disorders. The patient’s temperature is 97.7°F (36.5°C), blood pressure is 56/42 mmHg, pulse is 152/min, and respirations are 28/min. On physical exam, the patient appears somnolent. Her anterior fontanelle is tense and bulging, and she has scattered ecchymoses on her extremities. Laboratory testing is performed that reveals the following:
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