Table 5.
Diagnostic values of perfusion factors for predicting anastomotic complications (n = 86)
| Slope | T 1/2MAX | TR | |
|---|---|---|---|
| Sensitivity | 66.7% (4/6) | 100% (6/6) | 83.3% (5/6) |
| Specificity | 92.5% (74/80) | 83.7% (67/80) | 96.3% (77/80) |
| PPV | 40% (4/10) | 31.6% (6/19) | 62.5% (5/8) |
| NPV | 97.4% (74/76) | 100% (67/67) | 98.7% (77/78) |
| Accuracy | 90.7% (78/86) | 84.9% (73/86) | 95.3% (82/86) |
PPV positive predictive value, NPV negative predictive value, Cut-off values (2 categories), Slope (slow < 0.7 AU/sec), T1/2MAX (slow > 18 s), TR time ratio (slow > 0.6)