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Table 6 Relation between outcome of fistula and postoperative ultrasound finding

From: Role of early postoperative ultrasonography in prediction of AV fistula failure in hemodialysis patients

Studied variablesOutcome of fistulaMann-Whitney testP value
Mature (N = 82)Failed (n = 18)
Early postoperative blood flow (ml/min)
  Mean ± SD225.0 ± 10.5196.7 ± 11.36.000.001**
  Median225.0195.0
  Range200–244183.0–234.0
Late postoperative blood flow (ml / min)
  Mean ± SD567.1 ± 142.0271.2 ± 28.86.620.001**
  Median559.5271.0
  Range375.0–934.0212.0–312.0
Percent of increase in blood flow88%38.2%  
  1. **High significant