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Hemolysis and blood loss in children with chronic renal failure
Insights
Anemia in children with chronic kidney disease is linked to reduced erythrocyte lifespan. Blood loss, both intestinal and from dialysis, significantly contributes to this anemia.
Area of Science:
- Pediatric Nephrology
- Hematology
- Renal Medicine
Background:
- Anemia is a common complication in children with chronic renal failure.
- Erythrocyte survival is often impaired in these patients.
- The causes of anemia require further investigation.
Purpose of the Study:
- To determine erythrocyte life span in children with chronic renal failure.
- To quantify blood loss contributing to anemia in this population.
Main Methods:
- Erythrocytes labeled with 111Indium in 19 children on conservative treatment and 12 on hemodialysis.
- Blood loss measured using a specialized counting chamber.
- Correlation between erythrocyte life span and blood urea nitrogen analyzed.
Main Results:
- Erythrocyte life span decreased as blood urea nitrogen levels increased.
- Significant blood loss observed into the intestine (6 ml/m2 BSA on conservative treatment, 11 ml/m2 on hemodialysis).
- Dialysis equipment accounted for mean blood loss of 8 ml/m2 per dialysis, with half lost in tubing.
Conclusions:
- Reduced erythrocyte lifespan is a key factor in anemia of chronic renal failure in children.
- Both intestinal blood loss and blood loss during hemodialysis are major contributors to anemia.
- Monitoring and mitigating blood loss are crucial in managing anemia in pediatric chronic kidney disease.
Abstract:
Erythrocyte life span was determined in 19 children with chronic renal failure on conservative treatment and in 12 children on regular hemodialysis. Erythrocytes were labeled with 111Indium. Blood loss was measured using a special counting chamber. Erythrocyte life span decreased with increasing blood urea nitrogen. Blood loss into the intestine and into the dialysis equipment was found to be a major cause for anemia of children with chronic renal failure. Daily intestinal blood loss amounted to 6 ml/m2 BSA on conservative treatment and 11 ml/m2 on hemodialysis. Mean blood loss in the dialysis equipment was 8 ml/m2 per dialysis, almost half being lost in the connecting tubing systems.