Which drug is typically administered to manage cardiac arrest caused by ventricular fibrillation?

Epinephrine is a critical medication used in the management of cardiac arrest, particularly in cases of ventricular fibrillation. It works as a potent vasoconstrictor, which helps to increase coronary and cerebral perfusion pressure during cardiopulmonary resuscitation (CPR). By enhancing blood flow to vital organs, epinephrine supports the chances of successful resuscitation and improves survival outcomes post-arrest.

While other medications such as amiodarone play a role in the management of ventricular fibrillation, especially in cases where defibrillation is unsuccessful, they are not the first-line treatment in the initial management protocols. Atropine is generally not indicated for ventricular fibrillation, as it primarily addresses bradycardia rather than the chaotic activity of the heart seen in this arrhythmia. Adrenaline is another name for epinephrine, but in this context, the correct terminology is essential to clarify which specific drug is being referenced in the context of cardiac arrest treatment protocols. Thus, when managing ventricular fibrillation and a patient is in cardiac arrest, administering epinephrine is the appropriate choice.