ABSTRACT
UNLABELLED: Granulocyte transfusions for neutropenic patients have been used for over 40 years, although effectiveness, indications, and both patient and donor safety remain debated. This single-center study assessed the side effects, clinical course, and survival of granulocyte transfusions in critically ill pediatric patients, with underlying hemato-oncological disorders, prolonged neutropenia, and proven or suspected severe infection. Donor-specific side effects and influence of donor-specific characteristics on patient outcome were also investigated. A median of 4.02 × 10(10) cells was collected from 39 healthy donors for 118 granulocyte concentrates. Donors reported no significant side effects. Complications for patients were frequent but mostly minor and included vomiting, hypotension, and dyspnea. In one episode of life-threatening dyspnea, association with the granulocyte transfusion could not be ruled out. Overall survival on day 100 was 61.9 %. Patients received a median of 0.13 × 10(10) cells per kg body weight. Doses above this median were associated with a significantly better survival. Lower patient weight and age-/sex-adjusted weight were also associated with better survival. CONCLUSION: Granulocyte mobilization and collection is a safe practice. Transfusions are well tolerated in critically ill patients. Patient weight and transfused cells per kg bodyweight are major determinants of survival in pediatric patients. WHAT IS KNOWN: ⢠Granulocyte transfusions for neutropenic patients have been used for over 40 years ⢠The effectiveness of the technique remains controversial ⢠Patient and donor safety remain debated ⢠New mobilization protocols generate higher yields of granulocytes What is new: ⢠Granulocyte collection can safely be performed ⢠Granulocytes can safely be administered to patients ⢠Lower patient weight and age-/sex-adjusted weight are associated with better survival rates ⢠Patients receiving above 0.13 × 10 (10) cells per kg body weight had an excellent outcome ⢠Further standardized, prospective studies are warranted.