The modified Valsalva Maneuver has recently come into use for termination of supraventricular tachycardias. This video demonstrates it's application. For information on exactly how the Valsalva Maneuver is thought to work click on this link from the U.S. National Library of medicine https://www.ncbi.nlm.nih.gov/books/NBK537248/
For information on the research behind this therapy, click on this link which reviews the REVERT trial
https://sjrhem.ca/modified-valsalva-maneuver-in-the-treatment-of-svt-revert-trial/
