What is the second dose amount of Adenosine after the first dose?

The correct second dose of Adenosine after the first dose is 12 mg. In the treatment of paroxysmal supraventricular tachycardia (SVT), the standard protocol begins with an initial intravenous dose of 6 mg. If the first dose does not achieve the desired effect in terminating the arrhythmia, the recommendation is to administer a second dose of 12 mg. This escalation in the dose is based on the pharmacokinetics and effectiveness of Adenosine, where higher doses can be necessary to exert the desired effect when lower doses fail.

This dosing strategy is critical to ensure proper management of SVT and to effectively reset the electrical conduction in the heart. In clinical practice, healthcare providers must be familiar with these dosing protocols to provide timely and effective care.