Causes of syncope*
| Cause | Mean prevalence (range)% |
|---|---|
| *See Kapoor.2 | |
| Neurally mediated syncope | |
| vasovagal episode | 18 (8–37) |
| situational syncope | 5 (1–8) |
| carotid sinus syncope | 1 (0–4) |
| Psychiatric disorders | 2 (1–7) |
| Orthostatic hypotension | 8 (4–10) |
| Medications | 3 (1–7) |
| Neurological disease | 10 (3–32) |
| Cardiac syncope | |
| organic heart disease | 4 (1–8) |
| arrhythmias | 14 (4–38) |
| Unknown | 34 (13–41) |