October 17, 2019

Background: In patients with hemodynamically stable supraventricular tachycardia (SVT), vagal maneuvers are the traditional first step in management.  There are several  vagal techniques in the literature which include, standard valsalva maneuver (sVM), modified Valsalva maneuver (mVM), and carotid sinus massage (CSM). All three techniques aim to increase vagal tone to slow down conduction in the AV node and, hopefully, result in termination of Atrioventricular nodal reentry tachycardia (AVNRT)and atrioventricular reentrant tachycardia (AVRT).  The authors of this trial performed a RCT evaluating the effectiveness of sVM vs mVM vs CSM at not only terminating SVT but also having a sustained effect up to 5 minutes.