True regarding cardio pulmonary resuscitation is –
Correct Answer: Adrenaline is given if cardioversion fails.
Description: 200 joules are given every 2 minutes after each cycle of cardiopulmonary resuscitation (CPR). During resuscitation, adrenaline(epinephrine, 1 mg i.v.) should be given every 3-5 minutes and consideration given to the use of intravenous amiodarone, especially if ventricular fibrillation or ventricular tachycardia reinitiates after successful defibrillation. Ventricular fibrillation of low amplitude, or 'fine VF', may mimic asystole. If asystole cannot be confidently diagnosed, the patient should be regarded as having 'fineVF' and defibrillated. If an electrical rhythm is present that would be expected to produce a cardiac output, 'pulseless electrical activity' is present. There are several potentially reversible causes that can be easily remembered as a list of four Hs and four Ts. Pulseless electrical activity is treated by continuing CPR and adrenaline (epinephrine) administration whilst seeking such causes. Asystole is treated similarly, with the additional suppo of atropine and sometimes external or transvenous pacing in an attempt to generate an electrical rhythm. ref:harrison&;s principles of internal medicine,ed 18,pg no 2231
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