What is the adult dosage for the first administration of Adenosine?

Adenosine is administered to treat certain types of supraventricular tachycardia (SVT) due to its ability to temporarily block the conduction through the atrioventricular (AV) node, effectively restoring normal sinus rhythm. The standard initial dosage for adult patients is 6 mg, which is given as a rapid intravenous (IV) push. This initial dosage is critical for the effective management of the condition, as it quickly reaches the systemic circulation, allowing for a prompt therapeutic action.

If the first dose does not restore normal rhythm, it is common practice to administer a second dose of 12 mg after one to two minutes. However, as the question specifically asks about the first administration, the correct dosage would indeed be 6 mg as a rapid IV push. Understanding the dosing protocol is essential for those trained in emergency or cardiac care settings, ensuring timely and effective treatment for patients experiencing acute SVT episodes.