Background: Supraventricular tachycardia (SVT) is not an uncommon presentation to the emergency department. A common first-line therapy for hemodynamically stable SVT is the standard Valsalva maneuver (sVm) but it has a low success rate (5-20%). After failed conversion to normal sinus rhythm with sVm, patients who remain in SVT, the next step is typically to … Continue reading The Modified Valsalva Maneuver: Head Down, Legs Up