Key result
Electrophysiologic testing did not induce sustained ventricular arrhythmias in any long QT syndrome patients and demonstrated no prognostic value over a mean 28-month follow-up.
Why the study?
Does electrophysiologic testing provide diagnostic or prognostic value in patients with long QT syndrome?
Population
15 patients with syncope and/or cardiac arrest who had the long QT syndrome and 11 control subjects with…
Comparison
Electrophysiologic studies including incremental… vs Control subjects with normal QT intervals and…
Design
Cohort
Follow-up
mean 28 +/- 17 months
Authors
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Similar QT responses to pacing in long QT syndrome and controls may not aid diagnosis; leaves open the role of electrophysiologic testing.
Case-Control (n=26)
Does electrophysiologic testing provide diagnostic or prognostic value in patients with long QT syndrome?
Electrophysiologic studies, including programmed ventricular stimulation, are of limited diagnostic and prognostic value in patients with long QT syndrome.
Bhandari et al. (1985) conducted a case-control in Long QT syndrome (n=26). Electrophysiologic testing vs. Control subjects with normal QT intervals was evaluated on Inducibility of sustained ventricular tachycardia or ventricular fibrillation. Electrophysiologic testing did not induce sustained ventricular arrhythmias in any long QT syndrome patients and demonstrated no prognostic value over a mean 28-month follow-up.
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