A 59-Year-Old Man Is Brought to the Emergency Department by His

A 59-year-old man is brought to the emergency department by his wife because of a 3-day history of worsening shortness of breath. He has a history of long-standing hypertension, type 2 diabetes mellitus, and gout. Current medications include enalapril, amlodipine, metformin, and ibuprofen as needed. His wife reports that he only takes his medications every second or third day. He has smoked one pack of cigarettes daily for 30 years. He stopped drinking alcohol after his first acute gout attack 3 years ago. His temperature is 37.1°C (98.9°F) , pulse is 86/min, and blood pressure is 167/95 mm Hg. Pulse oximetry on room air shows an oxygen saturation of 91%. There is pitting edema in the bilateral lower extremities.  Levels of which of the following substances will be higher in the pulmonary vein compared to the pulmonary artery in this patient?

A) Aldosterone
B) Angiotensin I
C) Angiotensin II
D) Angiotensinase
E) Angiotensinogen
F) Arginine vasopressin
G) Prostaglandin E1
H) Renin

Correct Answer:

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