Podcast #118: Supraventricular Tachycardia

230px-svt_lead_ii-2Run Time:  2 minutes

Author: Michael Hunt M.D.

Educational Pearls:

  • Adenosine came on the scene around 1988 as a treatment for supraventricular tachycardia or SVT. Prior to the use of adenosine, treatments included (and still include) the Valsalva maneuver, carotid sinus massage, and according to Dr. Hunt dunking a patient’s face in cold water.
  • The traditional Valsalva maneuver consists of having the patient exhale against a closed glottis for 15 seconds. There is a new method purported, referred to as the modified Valsalva maneuver. This still includes the same 15 seconds of exhaling against the glottis, but afterward you have the patient lay supine and raise the legs to 45 degrees for 15 seconds.
  • From a study published in The Lancet in 2015, the modified Valsalva maneuver had a success rate of 43% and the traditional Valsalva maneuver had a success rate of 17%.

Link to Podcast:  http://medicalminute.madewithopinion.com/supraventricular-tachycardia/

References: http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(15)61485-4/abstract

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