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Impact of hydroxyurea on perioperative management and outcomes in children with sickle cell anemia

Masanori Hayashi1, Agustin Calatroni, Brittany Herzberg

  • 1Department of Pediatrics, Division of Hematology/Oncology, Duke University Medical Center, Durham, NC, USA.

Journal of Pediatric Hematology/Oncology
|September 24, 2011
PubMed

Insights

Children with sickle cell anemia on hydroxyurea require fewer perioperative transfusions. This study found hydroxyurea use significantly reduced transfusion needs in pediatric patients undergoing surgery, with low complication rates.

Area of Science:

  • Pediatric Hematology
  • Surgical Management
  • Sickle Cell Disease Treatment

Background:

  • Sickle cell anemia (HbSS genotype) presents significant challenges in pediatric surgical care.
  • Hydroxyurea is an established treatment that modifies disease severity in sickle cell anemia.
  • Perioperative management, including blood transfusions, is critical for patients with sickle cell anemia.

Purpose of the Study:

  • To compare perioperative transfusion requirements and outcomes in children with sickle cell anemia who were taking hydroxyurea versus those not taking it.
  • To evaluate the impact of hydroxyurea on transfusion strategies in the perioperative period for pediatric patients with sickle cell disease.

Main Methods:

  • Retrospective review of 51 children with sickle cell anemia (HbSS genotype) undergoing surgery between January 2003 and April 2008.
  • Comparison of perioperative transfusion management (no transfusion, single transfusion, serial transfusions/pheresis) between patients on hydroxyurea and those not on hydroxyurea.
  • Analysis of complication rates, including transfusion reactions and acute chest syndrome.

Main Results:

  • Children taking hydroxyurea (n=30) received significantly fewer perioperative transfusions compared to those not taking hydroxyurea (n=21) (P=0.004).
  • Only 27% of hydroxyurea patients required no preoperative transfusion, compared to 5% in the non-hydroxyurea group.
  • While complication rates were low in both groups, one patient not on hydroxyurea experienced a delayed hyperhemolytic transfusion reaction.

Conclusions:

  • Hydroxyurea therapy is associated with a substantial reduction in perioperative transfusions for children with sickle cell anemia undergoing surgery.
  • Both hydroxyurea and non-hydroxyurea groups demonstrated low overall complication rates.
  • Further research is warranted to optimize perioperative protocols for pediatric sickle cell anemia patients receiving hydroxyurea.

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