Cardiac test usage within 8 months of attendance at the rapid access chest pain clinic, pre-FFRCT/post-FFRCT adoption
| Investigation | Pre-FFRCT (n=259) | Post-FFRCT (n=284) | P value* |
| Patients, n (%) | Patients, n (%) | ||
| Invasive angiogram only | 66 (25.5) | 39 (13.7) | <0.001† |
| Invasive angiogram with pressure wire only | 3 (1.2) | 0 (0.0) | 0.108 |
| CTCA only | 131 (50.6) | 136 (47.9) | 0.548 |
| CTCA plus FFRCT | 0 (0.0) | 82 (28.9) | <0.001† |
| Rest NMPS | 27 (10.4) | 12 (4.2) | 0.007 |
| Stress NMPS | 59 (22.8) | 22 (7.7) | <0.001† |
| Stress MRI | 3 (1.2) | 8 (2.8) | 0.227 |
| Stress echo | 13 (5.0) | 9 (3.2) | 0.286 |
*P values calculated using Fisher’s exact test.
†Significant with Bonferroni correction applied to the group of eight observations (p<0.00625).
CTCA, CT coronary angiography; FFRCT, CT fractional flow reserve ; NMPS, nuclear myocardial perfusion scan.