Acute Management of Specific VA Recommendations for Management of Cardiac Arrest References that support the recommendations are summarized in Online Data Supplements 15 and 16. COR LOE Recommendations I A CPR should be performed in patients in cardiac arrest according to published basic and advanced cardiovascular life support I A In patients with hemodynamically unstable VA that persist or recur after a maximal energy shock, intravenous amiodarone should be administered to attempt to achieve a stable rhythm after further CLINICAL STATEMENTS AND GUIDELINES I A Patients presenting with VA with hemodynamic instability should undergo direct current cardioversion.S6-1 S6-3 I B-NR In patients with polymorphic VT or VF with ST-elevation MI, angiography with emergency revascularization is recommended.S6-7 S6-10 I C-EO Patients with a wide-QRS tachycardia should be presumed to have VT if the diagnosis is unclear. 