Table 2:
Conventional investigations performed to determine the etiology of TIA or stroke in 205 patients
| Investigation | Proportion of Patients |
|---|---|
| Brain imaging | |
| MR imaging (± CT) | 92% (189/205) |
| CT only | 8% (16/205) |
| Conventional vascular imaging (cervical-cerebral) | |
| CTA only | 18% (36/205) |
| MRA only | 37% (75/205) |
| CTA and MRA | 23% (47/205) |
| CTA and DSA | 5% (11/205) |
| MRA and DSA | 10% (20/205) |
| CTA, MRA, and DSA | 8% (16/205) |
| Cardiac investigations | |
| Electrocardiography | 100% (205/205) |
| Rhythm monitoring ≥24 hours | 29% (59/205) |
| Transthoracic echocardiography | 68% (140/205) |
| Transesophageal echocardiography | 6% (30/205) |
| Laboratory investigations | |
| Serology screen for vasculitis | 25% (51/205) |
| Serology screen for hypercoagulability | 34% (69/205) |
| CSF analysis | 14% (28/205) |
| Brain biopsy | 2% (4/205) |