Risks and methods for peripheral blood progenitor cell collection in small children

Area of Science:

• Pediatric Hematology
• Transplantation Medicine
• Apheresis Technology

Background:

• Peripheral blood progenitor cells (PBPC) are a key stem cell source for pediatric hematopoietic transplantation.
• Apheresis procedures in children, while technically similar to adults, raise concerns due to patient size and operator inexperience.

Purpose of the Study:

• To evaluate the safety and efficacy of pediatric apheresis for PBPC collection.
• To identify critical technical aspects and potential adverse events in pediatric apheresis.

Main Methods:

• Review of published series on pediatric apheresis procedures.
• Consideration of factors like extracorporeal circuit volume, blood flow rates, anticoagulation, and vascular access.
• Assessment of emotional stress and adverse events.

Main Results:

• Pediatric apheresis, when performed by experienced teams, is safe and yields adequate PBPC for transplantation.
• Key technical considerations include circuit volume, blood flow, anticoagulants, and vascular access.
• Adverse events are primarily related to vascular access or metabolic/hemodynamic changes, comparable to or lower than bone marrow harvesting.

Conclusions:

• Pediatric apheresis is a safe and effective method for collecting PBPC for hematopoietic transplantation.
• Careful management of technical aspects and patient-related factors ensures successful outcomes.
• The risks associated with pediatric apheresis are not greater than those of alternative procedures like bone marrow harvesting.