Natural history of patients with unexplained syncope and a nondiagnostic electrophysiologic study
- Kushner, Jeffrey A.
- Kou, William H.
- Kadish, Alan H.
- Morady, Fred
DOIAbstract
AbstractThe purpose of this study was to define the natural history of 99 patients with unexplained syncope who underwent an electrophysiologic test that either was entirely normal or demonstrated nonspecific abnormalities that were nondiagnostic (inducible polymorphic ventricular tachycardia or ventricular fibrillation, a mildly prolonged sinus node recovery time of <2 s, a His-ventricular interval of 55 to 99 ms or supraventricular tachycardia not associated with hypotension). The mean age (±SD) of the patients was 56 ± 19 years; structural heart disease was present in 47 patients and absent in 52. Complete follow-up was available in 95 patients.During 20 ± 11 months of follow-up, 2 patients (2%) died suddenly, 19 patients (20%) had recur...
Add to ORKG