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Mid‐Diastolic Potential is Related to the Reentrant Circuit in a Patient with Verapamil‐Sensitive Idiopathic Left Ventricular Tachycardia
Author(s) -
AIBA TAKESHI,
SUYAMA KAZUHIRO,
MATSUO KIYOTAKA,
TAGUCHI ATSUSHI,
SHIMIZU WATARU,
KURITA TAKASHI,
AIHARA NAOHIKO,
KAMAKURA SHIRO
Publication year - 1998
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/j.1540-8167.1998.tb00142.x
Subject(s) - medicine , cardiology , reentry , verapamil , tachycardia , qrs complex , ventricular tachycardia , reentrancy , stimulus (psychology) , electrocardiography , entrainment (biomusicology) , diastole , anesthesia , blood pressure , psychology , computer science , psychotherapist , calcium , programming language , rhythm
Mid‐Diastolic Potential in Idiopathic VT. We report a case of verapamil‐sensitive idiopathic ventricular tachycardia in which a mid‐diastolic potential (MDP) 45 msec preceding the Purkinje potential ( P potential) was recorded. Pacing during the tachycardia caused concealed entrainment, and the stimulus–QRS interval was equal to the P potential–QRS interval. The interval between the last pacing stimulus and the next P potential (postpacing interval) was longer than the ventricular tachycardia cycle length, but the MDP was orthodromically activated. These findings suggest that the MDP was on the reentrant circuit and the P potential was not on the reentrant circuit, but a bystander.
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