What is the second dose of amiodarone in ACLS protocols?

In Advanced Cardiovascular Life Support (ACLS) protocols, the administration of amiodarone is critical in managing certain types of cardiac arrest, especially in cases of ventricular fibrillation (VF) or pulseless ventricular tachycardia (VT). The initial dose of amiodarone is typically a 300 mg bolus.

The second dose, if needed, is specified as a 150 mg bolus. This second administration is intended to further stabilize the cardiac rhythm and improve chances of successful defibrillation if the initial treatment is not effective. Administering this dose after the initial bolus allows for continued support to the heart and aims to increase the likelihood of reverting the arrhythmia.

The other choices represent dosages that do not align with the established guidelines for amiodarone use in ACLS. Therefore, understanding the rationale behind the 150 mg bolus as the second dose helps reinforce the protocol's approach to managing life-threatening arrhythmias effectively.