Pseudo-postpacing interval of diastolic potential after entrainment pacing of remote bystander pathway in reentrant ventricular tachycardia.
After entrainment pacing, the postpacing interval of a diastolic potential may be misinterpreted if the distal tip of the ablation catheter captures a remote bystander pathway adjacent to the critical isthmus of a complex reentrant circuit in a structurally diseased heart. We discuss this possible pitfall of entrainment mapping of reentrant ventricular tachycardia, observed after a healed myocardial infarction.
Department of Medicine and Biological Science, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan, kanekoy@gunma-u.ac.jp.
Yoshiaki
Y
Kaneko
Tadashi
T
Nakajima
Tadanobu
T
Irie
Osamu
O
Igawa
Takafumi
T
Iijima
Masaki
M
Ota
Mio
M
Tamura
Takashi
T
Iizuka
Shuntaro
S
Tamura
Akihiro
A
Saito
Masahiko
M
Kurabayashi
D000200:Action Potentials; D000368:Aged; D001344:Autopsy; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D017115:Catheter Ablation; D022062:Electrophysiologic Techniques, Cardiac; D017809:Fatal Outcome; D006329:Heart Conduction System / Q000473:pathology / Q000503:physiopathology* / Q000601:surgery; D006801:Humans; D008297:Male; D009203:Myocardial Infarction / Q000150:complications; D011237:Predictive Value of Tests; D017180:Tachycardia, Ventricular / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology / Q000601:surgery; D013997:Time Factors