system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 38-year-old man presents to his physician with recurrent episodes of facial swelling and abdominal pain. He reports that these episodes started when he was approximately 16 years of age. His mother also has similar episodes of swelling accompanied by swelling of her extremities. The vital signs include: blood pressure 140/80 mm Hg, heart rate 74/min, respiratory rate 17/min, and temperature 36.6℃ (97.8℉). His physical examination is unremarkable. The laboratory work-up shows the following findings:
Test Result Normal range
C1 esterase inhibitor  22% > 60%
Complement C4 level  9 mg/dL  14–40 mg/dL
Complement C2 level 0.8 mg/dL  1.1–3.0 mg/dL
Complement component 1q  17 mg/dL 12–22 mg/dL
Which of the following anti-hypertensive medications is contraindicated in this patient?
assistant
Fosinopril