There are various etilogic factors concerned in the formation of pulmonary edema but it is rare that pulmonary edema is elicited as a consequence of direct current shock. The cause of this complication is unknown. The mechanism of pulmonary edema is suspected that acute alteration or disparities in atrial or ventricular mechanical function of the heart consequent to the application of electrical discharge precipitate pulmonary congestion. A case of acute pulmonary edema following the use of direct current shock during anesthesia for mitral commissurotomy was experienced. The patient was treated with oxygen, diuretics, steroid, continuous positive pressure ventilation and partial cardiopulmonary bypass. The patient recovered without further event.