<prompt> Which of the following class of drugs is contraindicated in bilateral renal artery stenosis?Angiotensin receptor blockerACE inhibitorsAldosterone antagonistRenin inhibitor  <response>: Ans. is b i.e., ACE inhibitors Contraindications of ACE inhibitors Pregnancy Renal artery stenosis whether unilateral, bilateral renal or suspected from the presence of generalized atherosclerosis - ACE inhibitor may cause renal failure. 