Volume 65, Issue 13 (Vol 65, Supplement 1 2008)                   Tehran Univ Med J 2008, 65(13): 33-37 | Back to browse issues page

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Hekmat R, Mojahedi M J, Garevani H. The effect of hemodialysis solution buffer on the control of blood pressure and efficacy of hemodialysis in chronic hemodialysis patients. Tehran Univ Med J. 2008; 65 (13) :33-37
URL: http://tumj.tums.ac.ir/article-1-673-en.html
Abstract:   (7591 Views)
Background: The effect of kind of dialysis solution on the control of blood pressure and adequacy and efficacy of hemodialysis is a most debated and controversial issue.
Methods: Twenty six chronic hemodialized patients in Ghaem hemodialysis center, Mashhad, Iran, in winter of the year 2004, enrolled this study for one month. The patients were dialyzed with bicarbonate buffer and were dialyzed in the next month with acetate. The kind of membranes and the dialysis machines were the same in both months. Systolic and diastolic pressures were measured before and after hemodialysis in at least three hemodialysis sessions, and he means recorded. The mean of the body weight were also recorded. In the same sessions of hemodialysis by measuring the urea, before and after hemodialysis, urea reduction ratio (URR), was also calculated. Statistical analysis was done with paired student t test for paired measurement, and independent t test for evaluating the effect of the kind of dialysate buffer on the measured parameters.
Results: There were no significant statistical differences between acetate and bicarbonate dialysis solution buffers in the control of diastolic blood pressure. But use of acetate buffer resulted in more significant systolic blood pressure reduction compared with bicarbonate buffer (p=0.045). When adequacy of hemodialysis were compared between two kinds of buffers there were no significant statistical differences between them. When the effect of dialysate sodium concentration in the range utilized in two buffers, was evaluated on the systolic and diastolic pressure reduction, no significant differences, between two types of buffers attributable to the difference between dialysates sodium concentrations were found.
Conclusion: Hemodialysis with both, acetate and bicarbonate buffers results in significant reductions in systolic and diastolic blood pressure, weight and urea ratio. Use of acetate buffer is more significantly associated with systolic blood pressure reduction compared to bicarbonate buffer (p=0.045), this effect is independent of the dialysate buffer sodium concentration.
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