Pediatric large-volume leukapheresis: A single institution experience with heparin versus citrate-based anticoagulant regimens

Charles D. Bolan, Yu Ying Yau, Herbert C. Cullis, Mitchell E. Horwitz, Crystal L. Mackall, A. John Barrett, Harry L. Malech, Nadja N. Rehak, Alan S. Wayne, Susan F. Leitman

Research output: Contribution to journalArticlepeer-review

Abstract

BACKGROUND: Anticoagulant-associated toxicity may exert significant effects on the safety and efficacy of large-volume leukapheresis (LVL) in children, however, few studies specifically address management of this issue. STUDY DESIGN AND METHODS: Seventy-four consecutive LVL procedures (mean, 4 blood volumes processed) in children weighing less than or equal to 30 kg (minimum, 10.9 kg) were analyzed. The first 21 procedures were evaluated retrospectively; 11 used heparin alone (Group I) and 10 used heparin plus reduced-dose ACD-A (whole blood to anticoagulant ratio ≥20:1) (Group II). The next 53 procedures were evaluated prospectively and used full-dose ACD-A (whole blood to anticoagulant ratio ≤513:1), intravenous divalent cation prophylaxis and no heparin; 11 used calcium alone (Group III) followed by 42 with calcium plus magnesium (Group IV). RESULTS: Seventy-four LVL (56 PBPC and 18 MNC) collections were performed in 38 subjects. One donor in Group I experienced a significant groin hematoma at the site of line placement. One donor each in Groups III and IV had mild paresthesias. Despite a mean citrate infusion rate of 2.6 mg per kg per minute, mean postapheresis serum potassium and ionized magnesium and calcium concentrations in Group IV declined by only 9, 8, and 4 percent, respectively, and stable levels of these variables were maintained 24 hours later. Postapheresis PLT counts declined significantly from baseline preapheresis levels in all groups (mean, 52% decrease). CONCLUSIONS: Use of full-dose citrate anticoagulant with prophylactic intravenous divalent cation infusion offers an effective and safe approach to management of anticoagulant-related toxicity in children undergoing LVL.

Original languageEnglish (US)
Pages (from-to)229-238
Number of pages10
JournalTransfusion
Volume44
Issue number2
DOIs
StatePublished - Feb 2004

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Hematology

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