Do specific electrophysiological study findings predict all-cause mortality in patients with unexplained syncope?
In patients with unexplained syncope, specific electrophysiological study findings (split His, sustained ventricular tachycardia, HV interval ≥ 70 ms) are associated with worse survival and independently predict all-cause mortality.
Background: Electrophysiological study can help in the diagnosis of arrhythmic syncope. According to the electrophysiological study finding, the prognosis of patients with syncope is still a matter of study. Objective: The aim of this study was to assess the survival of patients undergoing electrophysiological study according to their findings and to identify clinical and electrophysiological independent predictors of all-cause mortality. Methods: A retrospective cohort study included patients with syncope who underwent electrophysiological study from 2009 to 2018. A Cox logistic regression analysis was performed to identify independent prognostic factors for all-cause mortality. Results: = .04). Conclusion: Split His, sustained ventricular tachycardia, and HV interval ≥ 70 ms groups had worse survivals when compared to the control group. Age, congestive heart failure, split His, and sustained ventricular tachycardia were independent predictors for all-cause mortality.
Pinos et al. (Mon,) studied this question.
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