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Torsade in a patient with left bundle branch block: is there a long QT? (And: Left Bundle Pacing).

Dr. Smith's ECG Blog

It should be kept in mind that on occasions, beta-one agonist can result in increased ventricular ectopy e.g., in severe myocardial ischemia (by increasing myocardial demand), or sometimes with congenital long-QT syndrome. Therefore, I usually prefer temporary pacing which might be more controlled and is more predictable."

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An adolescent with trauma, chest pain, and a wide complex rhythm

Dr. Smith's ECG Blog

Accelerated ventricular rhythm in children: a review and report of a case with congenital heart disease 3. Most physicians, at first glance, get this wrong.