Left posterior fascicular tachycardia due to localized microreentry.

Tai, Y T; D'Onofrio, A; Bourke, J P; Campbell, R W · Eur Heart J · 1990

case_report · Level V

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Abstract

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.

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