Key result
Electrophysiological alternans of action potential duration was observed in 39% of patients undergoing routine cardiac surgery and was shown to be a localized phenomenon.
Population
36 patients undergoing routine cardiac surgery
Design
Cross-sectional
Authors
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Frequent localized alternans in surgical patients; hypothesis-generating for arrhythmia risk and requires prospective validation before clinical use.
Observational (n=36)
Electrophysiological alternans of epicardial repolarization is a frequent and potentially localized phenomenon in patients undergoing cardiac surgery.
Sutton et al. (1991) conducted an observational in Patients undergoing routine cardiac surgery (n=36). Atrial pacing during cardiac surgery was evaluated on Alternans of action potential duration. Electrophysiological alternans of action potential duration was observed in 39% of patients undergoing routine cardiac surgery and was shown to be a localized phenomenon.
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