Case presentation A 20-year-old G1 P0 woman at 29 weeks of gestation is hospitalized for acute pyelonephritis. She has no history of pyelonephritis in the past. She has been receiving intravenous ampicillin and gentamicin for 48 hours. She complains of acute shortness of breath. Clinical examination Heart rate: 100 beats per minute  Respiratory rate: 45 beats per minute Blood pressure: 120/70 mm Hg Right costovertebral angle tenderness is noted. Her abdominal examination reveals no masses or tenderness.

The fetal heart tones are in the 140 to 150 bpm range. The urine culture revealed Escherichia coli sensitive to ampicillin. What is the most likely diagnosis for this woman? *This Case Challenge is from the Editorial Team of Docplexus and is meant for educational purposes only. Source: Case files- Gynecology and Obstetrics  ##Disclaimer## The content provided on Docplexus is intended for…