Background: Children with sickle cell disease (SCD) lag in weight and height and have a delayed growth spurt compared to normal children. We studied the effect of long-term erythrocytapheresis (LTE) on the growth of children with SCD and the age at which they attained peak height velocity.
Procedure: A retrospective chart review was performed recording weight, height, and body mass index (BMI) measurements of 36 patients with SCD who received LTE every 3-5 weeks for an average duration of 5 years. The z-scores for weight, height, and BMI of these patients were compared with that of patients with SCD from the Cooperative Study of Sickle Cell Disease (CSSCD) and a sub-set of 64 controls matched for age, sex, and initial growth parameter z-scores at the start of LTE.
Results: The z-scores for all parameters improved significantly for our patients on LTE compared to match controls from CSSCD and the entire pediatric CSSCD cohort (P-value: <0.01). Peak height velocity was achieved 2 months earlier for females (P-value: 0.94) and 11 months earlier for males (P-value: 0.02), who started LTE before 14 years of age, compared to matched CSSCD controls. The study subjects who had not been on regular simple transfusions prior to starting LTE had a mean serum ferritin of 681 ng/ml after LTE for an average duration of 63 months.
Conclusion: LTE improves the growth of children with SCD without the risk of iron overload.
Keywords: Sickle cell disease; erythrocytapheresis; growth; peak height velocity.
© 2014 Wiley Periodicals, Inc.