Atrial Fib with RVR. What treatment? Then SVT. Is it sinus? Use ultrasound and Lewis leads! Posted byketaminhJanuary 26, 2016Posted inEmergency medicine and critical care, FOAMEdTags:stephen-smith Source: Atrial Fib with RVR. What treatment? Then SVT. Is it sinus? Use ultrasound and Lewis leads! Share this: Print (Opens in new window) Print Email a link to a friend (Opens in new window) Email Like Loading...