Defibrillation can be done with either alternating or direct current, although studies in recent years have indicated that direct defibrillation can be easily accomplished by application of electrodes to the heart and administration of an appropriate electric impulse, usually 110 to 120 volts for 0.1 second. The usual cause of failure to defibrillate is either an anoxic or an acidotic myocardium. Vigorous massage before application of the electric shock may be required oxygenate the myocardium sufficiently.ICD10 Certification.will help you to do collections and also the pending amounts from the patients.