The concentration of serum hemoglobin (Hg) depends on some factors in patients with kidney transplantation. The aim of this study was to determine the correlation between length of allograft kidney and Hg concentration.
Methods: A cross-sectional study was performed on 35 (20 male and 15 female) renal transplanted patients not treated by ACE inhibitor or Angiotensin II receptor antagonists. The mean age, duration of transplantation, BMI, serum creatinine and concentration of Hg were 40±14 years, 43±30 months, 24.8±3.3, 1.21±0.2 mg /dL and 14.4±1.7 g /dL, respectively. The mean length of kidney size measured by sonography was (114±8mm, rang: 91-134). There was a significant correlation between length of allograft kidney and Hg concentration (r=0.59, P<0.001). In the final multivariable linear regression model, independent variables that correlated with concentration of Hg were length of allograft kidney (p<0.0001) and taking of Acid folic (P<0.01). Factors entered into the multiple liner model but found to be insignificant included serum creatinine, duration of transplantation, age, sex, sex of donor, BMI, taking of iron supplement and taking of Azathioprine versus Cellcept. Higher size of allograft kidney can increase Hg concentration; However further studies should be done for proving of this subject.