The Role of Electrophysiologic Studies in the Management of Patients with Unexplained Syncope

PABLO DENES*, MARILYN D. EZRI

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

We evaluated the frequency and type of electrophysiologic abnormalities in an unselected population of consecutive patients with unexplained syncope. Fifty patients were entered in the study; all had 24‐hour dynamic electrocardiographs (Holter) recordings and underwent complete electrophysiological studies. An abnormal electrophysiologic study was found in 74% of the patients. Sinus node abnormality was observed in 30%, abnormal AV node function in 14%, long HV in 10%, block distal to H during rapid atrial pacing in 6%, paroxysmal supraventricular tachycardia in 12%, ventricular tachycardialfibrillation in 8%, and hypersensitive carotid sinus syndrome in 24%. There was no correlation between Holter and electrophysiologic study findings except for the presence of paroxysmal sustained supraventricular tachycardia. Based on clinical, Holter monitoring, and electrophysiologic findings, 38% were treated by antiarrhythmic drugs, 40% received permanent pacemakers, and. 22% were not treated at all. During follow‐up (23 ± 13 months), 9 patients (18%) experienced recurrent syncope or death.

Original languageEnglish (US)
Pages (from-to)424-435
Number of pages12
JournalPacing and Clinical Electrophysiology
Volume8
Issue number3
DOIs
StatePublished - Jan 1 1985

Keywords

  • antiarrhythmic drugs
  • electrophysiology study
  • Holter recording
  • pacing
  • syncope

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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