<prompt> In a patient with chronic congestive cardiac-failure, all of the following drugs prolong survival except :MetoprololCarvedilolEnalaprilDigoxin  <response>: Answer is D Digoxin Digitalis does not improve survival in patients with hea failure and sinus rhythm. It reduces symptoms of hea failure and need for hospitalization. ACE inhibitors Corvedilol and enalapril and Betablockers Metaprolol prolong life. ACE inhibitors improve symptoms and prolong life -- Oxford handbook 5th122 ACE inhibitors. 