Left posterior fascicular tachycardia due to localized microreentry
Tai, Y.T.; D'Onofrio, A.; Bourke, J.P.; Campbell, R.W.
European Heart Journal 11(10): 949-953
1990
ISSN/ISBN: 0195-668X PMID: 2124976 Document Number: 357100
Fascicular tachycardia in young patients without overt heart disease constitutes a rare but electrophysiologically distinct arrhythmia entity. Microreentry within the left posterior fascicle has been proposed as its mechanism, but evidence for this is inconclusive. This report details a patient with incessant fascicular tachycardia. The electrophysiological features, in particular the pattern of resetting response, provided strong evidence for reentry as the tachycardia mechanism. Satisfactory long-term arrhythmia control was achieved with flecainide.