Review Question - QID 212472

A 33-year-old woman presents to the emergency department at 37 weeks gestation. She states that she has had a headache for the past day and generally does not feel well. Her past medical history is unremarkable, and she is currently taking prenatal vitamins. Her temperature is 99°F (37.2°C), blood pressure is 177/108 mmHg, pulse is 100/min, respirations are 16/min, and oxygen saturation is 97% on room air. Physical exam is notable for diffuse discomfort to abdominal palpation. A spot urine protein to creatinine ratio is 37. Laboratory values are ordered as seen below.

Hemoglobin: 9 g/dL
Hematocrit: 30%
Leukocyte count: 6,500/mm^3 with normal differential
Platelet count: 47,000/mm^3

Serum:
Na+: 139 mEq/L
Cl-: 100 mEq/L
K+: 5.3 mEq/L
HCO3-: 25 mEq/L
BUN: 40 mg/dL
Glucose: 99 mg/dL
Creatinine: 2.3 mg/dL
Ca2+: 10.2 mg/dL
AST: 112 U/L
ALT: 150 U/L

A peripheral smear is performed as seen in Figure A. Which of the following is the most likely diagnosis?