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.

September 23, 2019

Background: Supraventricular tachycardia (SVT) is not an uncommon condition in the emergency department. Epidemiologically, SVT has an incidence of 35/100,000 person-years in the United States.2That is roughly 89,000 new cases per year. The Valsalva maneuver is a recognized treatment for SVT, but has a low success rate (5-20%). 3,4,5 The REVERT trial showed an increase in cardioversion of SVT using a modified Valsalva maneuver, but this was done with a manometer, and adjustable bed, which may not be available in many settings.