What is the initial treatment for stable SVT in adults?

The initial treatment for stable supraventricular tachycardia (SVT) in adults is adenosine. Administering a rapid intravenous push (IVP) of 12mg with a simultaneous flush of 10mL Normal Saline is the recommended approach because adenosine acts as a rapid antiarrhythmic agent. It works by temporarily blocking the conduction through the atrioventricular (AV) node, which can help restore normal sinus rhythm in cases of SVT.

The rapid administration combined with a flush is essential because adenosine has a very short half-life and needs to reach the target site quickly to be effective. If the first dose does not convert the SVT, additional doses may be given, typically 12mg again, if indicated.

Other treatments have specific indications, but in the case of stable SVT, adenosine administration is prioritized because it is both safe and effective for this situation.