Which medication is typically administered for supraventricular arrhythmias?

Adenosine is a medication that is commonly used to treat supraventricular arrhythmias due to its rapid action and effectiveness in converting certain types of arrhythmias back to normal sinus rhythm. It works by temporarily blocking conduction through the atrioventricular (AV) node, which helps to interrupt the reentrant pathways that can cause these rapid heart rhythms.

When administered intravenously, adenosine has a very short half-life, and its effects are observed almost immediately, making it a first-line treatment for acute episodes of supraventricular tachycardia (SVT). The rapid onset of action and the ability to restore normal rhythm quickly make adenosine a preferred choice in emergency settings for this particular type of arrhythmia.