BACKGROUND: Supraventricular tachycardias (SVT) are arrhythmias that originate in the atria. They are caused by a rapid-firing ectopic atrial or junctional focus that produces a heart rate of 150 - 250 bpm. One treatment for SVTs is to perform a Valsalva maneuver. The Valsalva maneuver is performed by taking a deep breath and then forcing exhalation against a closed or narrowed airway. The Valsalva maneuver causes changes in cardiac hemodynamics that lead to vagal nerve stimulation, and these changes will sometimes convert an SVT to sinus rhythm. The success rate of the traditional Valsalva in converting SVTs to sinus rhythm is low, only 5 - 20% in clinical practice. The REVERT trial compared the traditional Valsalva to a modified version of the maneuver.

REVERT trial (2015) - PubMed abstract
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