Epinephrine and atropine are recommended for the treatment of which condition?

• A. asystole
• B. ventricular fibrillation
• C. electromechanical dissociation
• D. supraventricular tachycardia

Answer: (A)

The situation described is asystole, a non-shockable cardiac arrest rhythm where there is no electrical activity and no pulse. In this scenario, the goal is to restore perfusion during CPR, and epinephrine is used because its vasoconstrictive action increases aortic diastolic pressure, improving coronary and cerebral perfusion and raising the chance of return of spontaneous circulation. Atropine has historically been listed with asystole in older resuscitation algorithms as an adjunct to counter vagal effects, but modern practice often uses epinephrine alone for asystole/PEA, with atropine not routinely recommended. The other rhythms require different steps: ventricular fibrillation is treated primarily with defibrillation, electromechanical dissociation (PEA) is managed with CPR and epinephrine, and supraventricular tachycardia is addressed with rhythm control or cardioversion rather than a vasopressor combination.