Heart rhythm : the official journal of the Heart Rhythm Society
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Editorial Comment
The "natural" history of implantable defibrillators under advisory.
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Multicenter Study Comparative Study
Prevalence of early repolarization pattern in inferolateral leads in patients with Brugada syndrome.
Recent data have shown a high incidence of the early repolarization pattern confined in inferolateral leads in patients with idiopathic ventricular fibrillation. ⋯ The early repolarization pattern in inferolateral leads is not an uncommon finding in Brugada syndrome. In our population, the early repolarization features were not associated with a worse outcome in subjects with Brugada syndrome.
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Pace mapping is used to identify critical areas for postinfarction ventricular tachycardia (VT). Unexcitable scar during pacing with standard output can identify borders of the reentry circuit. Unexcitable scar is not thought to contain surviving muscle fibers critical to the circuit. Due to current-to-load mismatch or a deep seated isthmus, higher power might be required in order to obtain capture. ⋯ High-output pacing can be helpful in identifying critical areas of postinfarction VT that otherwise may be missed.