PT  - JOURNAL ARTICLE
AU  - Elias B. Hanna
TI  - Syncope: Etiology and diagnostic approach
AID  - 10.3949/ccjm.81a.13152
DP  - 2014 Dec 01
TA  - Cleveland Clinic Journal of Medicine
PG  - 755--766
VI  - 81
IP  - 12
4099  - http://www.ccjm.org/content/81/12/755.short
4100  - http://www.ccjm.org/content/81/12/755.full
SO  - Cleve Clin J Med2014 Dec 01; 81
AB  - There are three major types of syncope: neurally mediated (the most common), orthostatic hypotensive, and cardiac (the most worrisome). Several studies have shown a normal long-term survival rate in patients with syncope who have no structural heart disease, which is the most important predictor of death and ventricular arrhythmia. The workup of unexplained syncope depends on the presence or absence of heart disease: electrophysiologic study if the patient has heart disease, tilt-table testing in those without heart disease, and prolonged rhythm monitoring in both cases if syncope remains unexplained.