Table 2.

Association of baseline demographic, clinical, and postoperative ultrasound characteristics of patients with unassisted AVF maturation versus assisted AVF maturation or failure to mature

VariableAll PatientsUnassisted MaturationAssisted Maturation or Failure to MatureP Value
No. of patients246121125
Age in yr, mean±SD53±1451±1255±150.07
Men, n (%)153 (62)82 (68)71 (57)0.08
Black, n (%)202 (82)103 (85)99 (79)0.22
Comorbidities, n (%)
 Hypertension234 (95)114 (94)120 (96)0.52
 Diabetes mellitus139 (56)69 (57)70 (56)0.87
 Coronary artery disease69 (28)32 (26)37 (30)0.58
 Peripheral vascular disease38 (15)20 (17)18 (14)0.64
 Cerebrovascular disease51 (21)22 (18)29 (23)0.33
 Heart failure85 (34)44 (36)41 (33)0.56
 Obesity, BMI≥30 kg/m2114 (46)59 (49)55 (44)0.45
 Antiplatelet drugs117 (48)56 (46)61 (49)0.69
 AVF location, upper arm155 (63)91 (75)64 (51)<0.001
Postoperative ultrasound
 Draining vein diameter in mm, mean±SD7.4±2.28.0±2.46.8±2.1<0.001
 Blood flow, ml/min, median [IQR]665 [424–926]860 [643–1142]486 [227–714]<0.001
 Depth in mm, mean±SD3.5±2.83.0±2.44.1±3.20.002
 Stenosis, n (%)133 (54)47 (39)86 (69)<0.001
  • AVF, arteriovenous fistula; BMI, body mass index; IQR, interquartile range.