We report a case of neurogenic cardiopulmonary instability with pulmonary edema occurring after an aneurysmal subarachnoid hemorrhage. The patient's pre-operative Glasgow coma scale score was 6 and the PA chest radiograph showed increased diffuse haziness in the right lung field. The patient presented with severe hypotension and low oxygen saturation during surgery. Cardiac damage was documented by increased CK-MB troponin-T levels, and ischemic ECG findings. Reversible cardiac failure associated with subarachnoid hemorrhage may be due to a neurogenic-stunned myocardium. The patient underwent clipping of the aneurysm and recovered with minimal neurologic impairment and normal cardiac function.