All of the following drugs reduce afterload, except:
Ref:KDT 6/e p504 Afterloadis reduced by the drugs having aerioler dilating propey. Propanolol is a non-selective beta-blocker. It can cause vasoconstriction by antagonizing beta2 mediated vasodilation. It, therefore do not decrease afterload.
Enalapril
Propranolol
Hydralazine
Sodium nitroprusside
Cardiovascular system