Nawaz Ali Memon

Effect of recombinant human erythropoietin on lymphocyte phenotyping and phagocyte activity in hemodialysis patients

The effect of recombinant human erythropoietin (rHmEPO) on lymphocytic phenotyping as well as on the phagocyte activity of polymorphonuclear cells and monocytes was evaluated in 16 patients on maintenance hemodialysis. The mean age of the patients was 38.2 +/- 16.2 years. There were seven men and nine women. All patients were started on 50 U/kg of rHmEPO intravenously three times per week, and the dosage was increased gradually to achieve target haemoglobin of 12 g/dL. Predialysis blood samples were taken monthly for 3 months, and phagocyte respiratory burst as well as lymphocyte subsets were studied. Healthy blood donors were taken as controls. By 3 months of rHmEPO treatment, there was no significant increase in total T and B cells, but there was a significant increase in both CD4 (P < 0.001) and CD8 (P < 0.005): however, there was no significant change in the CD4/CD8 ratio. There was significant reduction in the natural killer cells (P < 0.005). The phagocyte activity studies showed a significant increase in the respiratory burst in whole blood (P < 0.001) and opsonized zymosan (P < 0.001) as well as improvement in the suppressed polymorphonuclear cell and monocyte activity by uremia. Phagocytosis studied by yeast uptake showed significant improvement from the pretreatment suppressed phagocytes to normal activity posttreatment. In conclusion, treatment with rHmEPO increases CD4 and CD8 cell counts without affecting the CD4/CD8 ratio, decreases the natural killer cells, and improves the impaired phagocyte activity in hemodialysis patients.

Comparison between Continuous Ambulatory Peritoneal Dialysis and in Center Hemodialysis

The data on 39 patients on hemodialysis and 19 on continuous ambulatory peritoneal dialysis (CAPD) were compared in terms of correction of metabolic abnormalities, types of complications necessitat...

Non-peritonitis complications of continuous ambulatory peritoneal dialysis in Saudi Arabia.

Although peritonitis is the major complication and leading cause of morbidity in patients undergoing continuous ambulatory peritoneal dialysis (CAPD), there are other complications of this long-term renal replacement therapy (RRT) modality. In order to evaluate the non-peritonitis complications, we retrospectively studied 60 new patients who were accepted in our CAPD program over a period of eight years from 1984 to 1993. Out of the 60 patients, 31 were females and 29 were males, with a mean age of 37.0 +/- 18 years. Tenckhoffs catheter was implanted by surgeons under direct vision in the operating theater through a midline incision. Nine of our patients had previous abdominal surgery and 11 females had pregnancies before CAPD, ranging from one to 10 with a mean of four. A total of 49 episodes of complications were observed, 32 early and 17 late. Early complications were defined if they occurred within three months from starting the procedure and late complications were defined as occurring after this period. There were 15 catheter blocks (25%), nine dialysate leaks (15%) and five hemoperitoneums (8.3%). Two serious and unusual complications were observed. In one of our patients, a mesenteric blood vessel injury occurred during catheter insertion, which necessitated massive blood transfusions and laparotomy. The other patient developed intestinal obstruction due to obstruction of intestinal loops around the catheter; this was corrected by removal of the catheter without the need for laparotomy. The late complications included six hernias, three hydroceles, three exit site infections, three tunnel infections and one case of loss of ultrafiltration.

Utilization and Limitations of Various Modalities of Long-Term Peritoneal Dialysis in King Khalid University Hospital: Six-Year Experience

ABSTRACT In 1982, we started the first long-term peritoneal dialysis program in Saudi Arabia for the management of end-stage renal failure in adults. Over the next 6 years, we accepted 54 adult pat...