<prompt> True regarding cardio pulmonary resuscitation is:Most common presentation in ECG is asystoleCompression to ventilation ratio is 5:1Adrenaline is given if cardioversion failsCalcium gluconate is given immediately  <response>: Answer is C Adrenaline is given if cardioversion fails During cardiopulmonary rescuscitation CPR, administration of Adrenaline is recommended only after attempts at cardioversion fail. Adrenaline Epinephrine is given if cardioversion fails Cardioversion is a brief procedure where an electric shock is given to the hea to conve an abnormal hea rhythm back to a normal rhythm Defibrillation CardioversionDefibrillation is recommended as the immediate step during cardiopulmonary resuscitation. AdrenaleneEpinerphrine is recommended only after Jailed defibrillationcardioversion Epinephrine 1 mg intravenously is given after failed defibrillation Most common presentation on ECG is ventricular fibrillation VF and not Asystole H17th1708 The most common electrical mechanism for true cardiac arrest is ventricular fibrillation VF Which is responsible for 65 to 80 of cardiac arrest Harrison Asystole, Pulseless Electrical Activity and Severe Bradyarrhythmias cause the remaining 20 to 30 Calcium gluconate is not recommended for routine administration H17th1712 Intravenous calcium gluconate is no longer considered necessary or safe for routine administration It is now only recommended for ceain specific indications Indications for calcium gluconate administration Acute hyperkalemia Known to be the triggering event for resistant VF HypocakemiaQ Patients who have received toxic doses of calcium channel antagonisitsQ 