<prompt> All the following are drugs are used in the management of acute myocardial infraction exceptTissue plasminogen activatorIntravenous beta blockersAcetylsalicylic acidCalcium channel blockers  <response>: Ref Harrison 19 th ed pg 1596 Results of multiple trials of different calcium antagonists have failed to establish a role for these agents in the treatment of most of the patients with MI . 