Adenosine is a medication that is commonly used to treat supraventricular tachycardia (SVT). SVT is a type of abnormal heart rhythm that originates in the upper chambers of the heart (the atria) and can cause symptoms such as palpitations, shortness of breath, and chest discomfort.
Adenosine works by blocking the conduction of electrical impulses through the atrioventricular (AV) node, which is the pathway that connects the atria and the ventricles of the heart. By blocking the AV node, adenosine can help to restore a normal heart rhythm in patients with SVT.
When adenosine is given, it is typically administered as a rapid intravenous injection into a vein. The medication has a very short half-life of only a few seconds, so its effects are typically very brief. However, the rapid onset of action of adenosine makes it a useful tool for diagnosing and treating SVT.
During an SVT episode, the heart rate can be very fast, often exceeding 150 beats per minute. Adenosine can quickly slow the heart rate down to a normal level, which can help to relieve symptoms and prevent complications such as heart failure or stroke. However, adenosine is not appropriate for all patients with SVT and should only be used under the supervision of a healthcare provider.
Mar 20th, 2023 had a 12-hour episode, terminated by adenosine in Seton ER.