Pharmacology Mechanism of action of epinephrine in cardiopulmonary resuscitation is – A Increase myocardical demand B Increase SA node activity C Peripheral vasoconstriction and directing blood flow to hea D Ratio of blood flow to epicardium and endocardium decreases 💡 Explanation Mechanism of action of epinephrine in cardiopulmonary resuscitation is - ✓ Correct Answer: B. Increase SA node activity