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Collection efficiency in apheresis
Yandy Marx Castillo-Aleman1, Yendry Ventura-Carmenate1, May Ann-Martinez1
1Abu Dhabi Stem Cells Center (ADSCC), Villa 25, Al Misahah St., Rowdhat, PO Box 4600, Abu Dhabi, United Arab Emirates.
Summary
Understanding cell collection efficiency (CE) equations is crucial for optimizing apheresis procedures. This study details various CE analyses to improve hematopoietic progenitor cell collection and identify potential issues.
Area of Science:
- Hematology
- Biomedical Engineering
- Medical Device Technology
Background:
- Apheresis machines provide advanced procedural data, but cell collection efficiency (CE) analysis still depends on manual calculations by professionals.
- Accurate CE calculations are vital for optimizing apheresis techniques and identifying factors affecting procedure effectiveness.
Purpose of the Study:
- To summarize and present classical and novel cell collection efficiency (CE) equations used in apheresis.
- To illustrate the application of these CE analyses with a case study of hematopoietic progenitor cell collection.
- To elucidate the mathematical relationships between various CE metrics.
Main Methods:
- Review and synthesis of established and emerging CE calculation methodologies.
- Application of these methods to a real-world case of hematopoietic progenitor cell collection.
- Detailed presentation of formulas including CE1, CE2, instantaneous and corrected CE, fold enrichment, and throughput metrics.
Main Results:
- Comprehensive overview of 15 distinct CE analyses, including yield, enrichment, throughput, rate, loss, and predictive metrics.
- Demonstration of the practical application of these calculations in a hematopoietic progenitor cell collection procedure.
- Elucidation of the interconnections between different CE equations.
Conclusions:
- A thorough understanding of CE equations empowers apheresis professionals to optimize procedures and enhance cell collection outcomes.
- The presented mathematical framework aids in identifying and mitigating factors that could compromise apheresis effectiveness.
- This work provides a valuable resource for improving the precision and efficiency of apheresis, particularly in stem cell collections.
