| Investigations performed | Diagnostic investigation | |||
| Urgent (n = 48) (%) | Elective (n = 47) (%) | Urgent (n = 48) (%) | Elective (n = 47) (%) | |
| 12-lead ECG | 48 (100) | 47 (100) | 28 (58) | 18 (38) |
| 24–48 hour Holter monitoring | 21 (44) | 37 (79) | 7 (15) | 14 (30) |
| Event recorder | 2 (4) | 3 (6) | 0 (0) | 0 (0) |
| Implantable loop recorder | 1 (2) | 2 (4) | 0 (0) | 1 (2) |
| Documented telemetry | 24 (50) | 5 (11) | 12 (25) | 3 (6) |
| Tilt service assessment or carotid sinus massage | 5 (10) | 9 (19) | 0 (0) | 7 (15) |
| Other or undetermined | 1 (2) | 4 (9) | ||