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Idiopathic Reentrant Right Ventricular Outflow Tract Tachycardia With Presystolic Potential of Central Pathway
Author(s) -
YOKOSHIKI HISASHI,
MITSUYAMA HIROFUMI,
UENO MICHIHIKO,
TSUTSUI HIROYUKI
Publication year - 2010
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.1540-8167.2010.01751.x
Subject(s) - medicine , cardiology , ventricular outflow tract , left bundle branch block , right bundle branch block , tachycardia , reentry , ventricular tachycardia , entrainment (biomusicology) , sustained ventricular tachycardia , electrocardiography , heart failure , rhythm
Idiopathic Reentrant RVOT VT With Presystolic Potential . A 12‐year‐old girl with recurrent palpitation due to idiopathic ventricular tachycardia (VT) with a left bundle branch block configuration and inferior axis was referred to our hospital. During the VT, a spiky presystolic potential (SP) was recorded at the septum of right ventricular outflow tract (RVOT) just below pulmonary valve. The SP was entrained with a decremental property by pacing from right ventricular apex. Concealed entrainment was observed by pacing where the SP was recorded. Delivery of radiofrequency current targeting the SP abolished the VT. The SP with the decremental property could represent the central pathway of this idiopathic RVOT reentrant VT. (J Cardiovasc Electrophysiol, Vol. 21, pp. 1174‐1177)