Retrograde alternating Wenckebach periodicity is rare and only five cases have been published previously. We are reporting an additional patient with sinus node dysfunction and nonsustained ventricular tachycardia who, during rapid ventricular pacing, developed retrograde alternating Wenckebauch periodicity. Two levels of block were most likely localized to the AV node with 2:1 block at the first level and 5:4 block at the second level resulting in ):4 block. The possible causes of the rare incidence of retrograde alternating Wenkebach periodicity are discussed.
|Number of pages||4|
|Journal||Journal of Electrophysiology|
|State||Published - 1988|