Table 6 Relation between outcome of fistula and postoperative ultrasound finding
Studied variables | Outcome of fistula | Mann-Whitney test | P value | |
|---|---|---|---|---|
Mature (N = 82) | Failed (n = 18) | |||
Early postoperative blood flow (ml/min) | ||||
Mean ± SD | 225.0 ± 10.5 | 196.7 ± 11.3 | 6.00 | 0.001** |
Median | 225.0 | 195.0 | ||
Range | 200–244 | 183.0–234.0 | ||
Late postoperative blood flow (ml / min) | ||||
Mean ± SD | 567.1 ± 142.0 | 271.2 ± 28.8 | 6.62 | 0.001** |
Median | 559.5 | 271.0 | ||
Range | 375.0–934.0 | 212.0–312.0 | ||
Percent of increase in blood flow | 88% | 38.2% | ||