Why the study?
What are the clinical and electrophysiological trigger factors for torsades de pointes in patients with atrioventricular block?
Population
15 patients with atrioventricular block, including 6 with torsades de pointes and 9 without TdP.
Design
Case-control
Authors
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Prolonged QTc was associated with TdP in AV block; leaves open prospective validation of risk stratification.
What are the clinical and electrophysiological trigger factors for torsades de pointes in patients with atrioventricular block?
In patients with AV block, a prolonged QTc interval, frequent ventricular premature beats, and advanced AV block are associated with the development of torsades de pointes.
Moroe et al. (1988) studied this question.
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