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Updated: Jul 21, 2026

Presynaptically Silent Synapses Studied with Light Microscopy
Published on: January 4, 2010
All that glitters is not gold ... all that faints is not slow
S C Toal1, A Palshikar, M Khan
1Cardiology, Quintiles ECG Services, Mumbai.
Abstract:
An 82 year old man presented with multiple syncopal episodes. Since his ECG showed LBBB (left bundle branch block) with first degree AV block, he was advised permanent pacemaker implantation. However, a wide QRS tachycardia on the Holter raised the possibility of tachycardia-mediated syncope. EP (electrophysiological) studies revealed easily and repeatedly inducible short lasting slow-fast AVNRT (atrioventricular nodal reentry tachycardia) with severe hypotension. After RF ablation of the slow pathway, he is asymptomatic at six month follow-up.
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