ACE inhibitors are contraindicated in: (A) Diabetes mellitus, (B) Hypeension in age old patient, (C) Scleroderma, (D) Bilateral renal aery stenosis
Answer is D. Refer kDT 6/e p 484 Angiotensin-conveing enzyme inhibitors (ACEIs) are contraindicated in patients with bilateral renal aery stenosis due to risk of azotemia resulting from preferential efferent aeriolar vasodilation in the renal glomerulus due to inhibition of angiotensin II.