15K views · 138 reactions | In hemodynamically stable patients with paroxysmal supraventricular tachycardia (PSVT), vagal maneuvers are the first-line therapy. One example is the modified Valsalva maneuver, which begins with a strain phase followed by leg elevation while in the supine position. Watch the video short to see the Valsalva maneuver in action, and read the JAMA review on PSVT: https://ja.ma/46Xvyhh | JAMA | Facebook