Medicine True regarding cardio pulmonary resuscitation is A Most conunon presentation in ECG is asystole B Compression to ventilation ratio is 5:1 C Adrenaline is given if cardioversion fails. D Calcuim gluconate is given immediately. 💡 Explanation True regarding cardio pulmonary resuscitation is ✓ Correct Answer: C. Adrenaline is given if cardioversion fails.