The complaint of “heart palpitations” accounts for an estimated 50,000 visits a year to emergency departments in the United States. Patients present to the emergency department with supraventricular tachycardias frequently, but there are many different mechanisms to the origin of these rhythm disorders that must be investigated to determine the best — and most comfortable — treatment plan.
Our recent issue Supraventricular Tachydysrhythmias in the Emergency Department reviews the etiology of these rhythm disorders and presents new options for managing these conditions.
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Here are a few key points:
- Supraventricular tachycardias (SVTs) arise at or above the atrioventricular (AV) node due either to abnormal automaticity or abnormal conduction.
- AV nodal re-entry tachycardia (AVNRT) makes up 60%-70% of SVT cases due to a functional obstruction with 2 conduction systems within the node.
- Ventricular pre-excitation (VPE) occurs when circus movements rely on anatomical accessory pathways from the atria to the ventricle. This is the mechanism of AV re-entry tachycardia (AVRT).
Last Updated on January 26, 2023