Differentiating Ventricular From Supraventricular Arrhythmias Using the Postpacing Interval After Failed

Matthew T Bennett1, Nathan Leader2, John Sapp2

  • 1Heart Rhythm Service, University of British Columbia, Vancouver, Canada (M.T.B., J.G.A., A.D.K.); University of Toronto, Ontario, Canada (N.L.); Queen Elizabeth II Health Sciences Center, Halifax, Nova Scotia, Canada (J.S., R.P., M.G.); Hamilton Health Sciences Center, Ontario, Canada (J.S.H.); Montreal Heart Institute, Quebec, Canada (B.T.); Royal Jubilee Hospital, Victoria, British Columbia, Canada (L.S.); McGill, Montreal, Quebec, Canada (V.E.); University of Ottawa, Ontario, Canada (D.B., P.N.); University of Alberta, Edmonton, Canada (S.S.); University of Western Ontario, London, Ontario, Canada (A.T.). matthew.bennett@vch.ca.

Summary

Antitachycardia pacing (ATP) response can help distinguish ventricular from supraventricular arrhythmias in patients with implantable cardioverter defibrillators. The postpacing interval minus tachycardia cycle length (PPI-TCL) is a key metric for this discrimination.

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