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[Prevention of sickle cell crises with multiple phlebotomies]
N Bouchaïr1, P Manigne, A Kanfer
1Service de pédiatrie, CHU, Constantine, Algérie.
Summary
Phlebotomy effectively reduced painful crises and hospitalizations in sickle cell disease patients by lowering hemoglobin levels and inducing iron deficiency. This therapy improved patient outcomes without adverse effects on growth or cognition.
Area of Science:
- Hematology
- Pediatrics
- Internal Medicine
Background:
- Sickle cell disease (SCD) is characterized by frequent painful crises leading to significant morbidity and healthcare utilization.
- Phlebotomy has been explored as a therapeutic strategy to manage SCD complications by altering blood parameters.
Purpose of the Study:
- To evaluate the efficacy of phlebotomy in reducing hospitalization days due to painful crises in SCD patients.
- To assess the impact of phlebotomy on hemoglobin levels and iron status in SCD patients with elevated baseline hemoglobin.
Main Methods:
- Seven SCD patients (four SC, three SS), aged 4-24 years, underwent sequential phlebotomies over 18 months to 4 years.
- Phlebotomy volumes and frequencies were individualized based on patient age, hemoglobin, and serum ferritin levels.
- Hospitalization days for pain crises were the primary outcome measure.
Main Results:
- Annual hospitalizations decreased dramatically from 144 days pre-treatment to 1-20 days during the study.
- Mean hemoglobin levels were reduced from 10.7 g/dL to 8.8-9.2 g/dL during treatment.
- Mean corpuscular volume, mean corpuscular hemoglobin concentration, and serum ferritin levels also decreased, with no observed adverse effects on growth or intellectual performance.
Conclusions:
- Phlebotomy significantly reduced painful crises and hospitalizations in SCD patients, suggesting a strong link between this therapy and clinical improvement.
- The therapeutic effect is likely multifactorial, involving reduced blood viscosity due to lower hemoglobin and decreased HbS polymerization from reduced mean corpuscular hemoglobin concentration.
- Induced iron deficiency did not result in detrimental effects on physical growth or cognitive function in the studied pediatric and young adult population.