Table 1.

Characteristics of patients with CKD referred for vein mapping

CharacteristicCentral Vein PatencyP Value
Stenosis, n=53No Stenosis, n=472
Mean age, yr (SD)57 (18)60 (14)0.28
Mean BMI, kg/m2 (SD)26 (7)28 (7)0.05
Black, n (%)41 (77)389 (82)0.19
Women, n (%)23 (43)215 (46)0.77
CKD stage, n (%)<0.001
 Stage 40 (0)12 (3)
 Stage 53 (6)126 (27)
 Dialysis50 (94)334 (71)
Primary insurance,  n (%)0.54
 Medicare27 (51)204 (43)
 Medicaid16 (30)154 (33)
 Private10 (19)114 (24)
Previous fistula or graft, n (%)23 (43)72 (15)<0.001
Previous kidney transplant, n (%)10 (19)14 (3)<0.001
Current tunneled catheter, n (%)50 (94)327 (69)<0.001
Cardiac rhythm device, n (%)8 (15)18 (4)0.002
Diabetes mellitus, n (%)25 (47)262 (56)0.11
Hypertension, n (%)49 (93)424 (90)0.35
SLE, n (%)2 (4)12 (3)0.32
  • BMI, body mass index.