Table 1.

Demographic and clinical data of the 41 maintenance hemodialysis patients

Age (Yr)	57.0±13.3 (32-82)
Gender (males/ females)	51.2% / 48.8%
Smoking	7 (17.1%)
Diabetes	10 (24.4%)
Dialysis durations (months)	70.5±57.4 (4-216)
Age of fistula (months)	48.1±39.8 (3-180)
Radiocephalic fistula/ brachiocephalic fistula	53.7% / 46.3%
Fistula site: Right arm/ left arm	48.8% / 51.2%
Nephropathy ethiology
Unknown	17 (41.5 %)
Diabetic nephropathy	10 (24.4 %)
Hypertension	6 (14.6 %)
Glomerulonephritis	4 (9.8 %)
Amyloidosis	3 (7,3 %)
Lupus nephritis	1 (2.4 %)

Data are presented as mean± SD (range), percentage or number of patients (percentage)