• Defibrillation involves the delivery of non-synchronized direct electrical current (mono or biphasic) to the myocardium of a patient exhibiting ventricular fibrillation or pulseless ventricular tachycardia.
• The objective of the defibrillation is to depolarize the entire myocardium, which hopefully will result in allowing a single reliable pacemaker site to assume pacemaker control at a rate capable of producing an adequate cardiac output.

INDICATION OF PROCEDURE:-

• Patient in ventricular fibrillation.
• Patient in pulseless ventricular tachycardia.

PROCEDURE:-

• Undertake universal precautions (BSI).
• Verify the absence of pulse and respiration.
• Initiate CPR with C-A-B sequence.
• Place the patient in a safe environment if initially in contact with some electrically conductive material such as metal or water.
• Connect cardiac monitor to analyze rhythm monitor pulse oximetry and Blood Pressure.
• Confirm ventricular fibrillation / pulseless ventricular tachycardia.
• Apply electrode gel to the paddles, or place defibrillator pads on the patient’s exposed thorax.
• Turn on and charge the defibrillator to 200 J for the shock.
• Ensure the electrodes are appropriately placed on the patient’s thorax with the proper pressure.
• Ensure that no one else in contact with the patient, verbally and visually clear everybody, including yourself, before any defibrillation attempt.
• Deliver a defibrillatory shock the red buttons as per the defibrillator used.
• Immediately resume CPR for 2 minutes without checking the pulse.
• Reconfirm the rhythm on the monitor screen, if patient is still in VF/Pulseless VT, recharge the defibrillator to 200J and shock again.
• For pediatric patient’s same method apply except paddles are smaller and the energy level start with 2J/kg, 4 J/kg, and then 4J/kg.