Nitroglycerine exes beneficial effects in classical angina pectoris primarily by:: (A) Increase in total coronary blood flow, (B) Redistribution of coronary blood flow, (C) Reduction of cardiac preload, (D) Reduction of cardiac afterload
Answer is C. (Ref: KDT 6/e p523) Mechanism of action nitrates in classical angina is reduction in preload (due to venodilation) and in variant angina is coronary vasodilation.