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Figure 3 Intraprocedural Complete Heart Block
Example of the development of intraprocedural complete heart block. Intracardiac His bundle ECG and surface ECG during TASH. (Left) Absence of complete heart block immediately before ethanol injection. (Right) Infra-His block after ethanol injection. Sinus rhythm was restored spontaneously after 5 min in this patient. A = atrial potential; ECG = electrocardiogram; His = His potential; TASH = transcoronary ablation of septal hypertrophy; V = ventricular potential.
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