The Effect of Calibration on Haemodailysis Machines on Adequacy of Dialysis

Abstract

Dialysis machines are artificial kidneys that perform some kidney functions for patients who have renal failure and they used to clean the blood and balance its constituents. The machine maintenance and calibration are extremely important in evaluation of adequacy of hemo­dialysis and in assessing dialysis session per­formance. Patients under dialysis sometimes suffer from allergen and complain that the treatment is not effective. They always complain, so the study proposed to see whether these monitor are working properly or not, and what are the required for these monitors to work well. The study was conducted on heamodialysis machines in Gezira State to evaluate the efficiency of the dialysis dose before and after calibration. Samples of ten machines were selected randomly from Gezira hospital for renal diseases and surgery and Abu Aushar dialysis center. Eight blood samples were taken from patients on twice – per – week dialysis regimens pre and post dialysis sessions before calibration and the same sample size were taken after calibration. The samples were analyzed for urea and the study compared the results post dialysis before and after calibration for the purposes of the research. The two major methods used for evaluation the adequacy of hemodialysis are URR and Kt/v. The minimum value for urea reduction ratio (URR) is 65% and 1.2 for Kt/v. Data was analyzed using the statistical analysis (SPSS-15) and (Microsoft Excel 2007), and the analysis results showed that there is an improvement in the dialysis outcome after calibration comparing with the minimum values of URR (65%) and Kt/v (1.2). But statistically, there was no significant different before and after calibration in the dialysis dose.