Per-patient TCD MFV thresholds for various minimal sensitivities in detecting 50% vasospasm
| Minimum Sensitivity | Predefined MFV Threshold (cm/s)a | |||
|---|---|---|---|---|
| ICA or M1 | Basilar Artery | Sensitivity (95% CI) | Specificity (95% CI) | |
| 80% | >164 | >80 | 0.86 (0.72–0.94) | 0.64 (0.56–0.71) |
| 85% | >160 | >61 | 0.90 (0.77–0.96) | 0.48 (0.40–0.56) |
| 90% | >126 | >60 | 0.94 (0.82–0.98) | 0.37 (0.30–0.45) |
| 95% | >95 | >56 | 0.96 (0.85–0.99) | 0.24 (0.18–0.31) |
↵a Severe vasospasm was determined when 1 threshold was exceeded.