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The inflammatory response to CPB: the role of leukocyte filtration
1Hammersmith Hospital, London, UK. geoasi@hotmail.com
Insights
Leukocyte filtration during cardiopulmonary bypass (CPB) aims to reduce inflammation after heart surgery. However, its effectiveness in mitigating the inflammatory response and improving organ function remains debated among studies.
Area of Science:
- Cardiovascular Surgery
- Immunology
- Biomedical Engineering
Background:
- Leukocyte activation is a key part of the inflammatory response following cardiopulmonary bypass (CPB).
- Strategies to mitigate this response are crucial for improving patient outcomes after cardiac surgery.
- Leukocyte filtration is one such strategy, designed to remove activated leukocytes during CPB.
Purpose of the Study:
- To review published clinical trials on the efficacy of leukocyte filtration during CPB.
- To assess the impact of leukocyte filtration on the inflammatory response and organ function after cardiac surgery.
- To clarify the controversial role of leukocyte filtration in cardiac surgery.
Main Methods:
- Systematic review of published human trials.
- Analysis of studies investigating leukocyte filtration during cardiopulmonary bypass.
- Evaluation of reported outcomes related to inflammatory markers and organ function.
Main Results:
- The efficacy of leukocyte filtration in attenuating the inflammatory response is not definitively established.
- Published trial results on the benefits of leukocyte filtration remain controversial.
- Further research is needed to clarify its clinical utility.
Conclusions:
- The clinical benefit of leukocyte filtration during cardiopulmonary bypass for cardiac surgery requires further investigation.
- Current evidence does not conclusively support or refute its routine use.
- The controversial nature of its efficacy necessitates a critical evaluation of its role in mitigating CPB-induced inflammation.
Abstract:
Leukocyte activation is a significant component of the systemic inflammatory response to cardiopulmonary bypass (CPB). Various strategies have been developed aiming to reduce leukocyte activation and its deleterious effects on organ function after cardiac surgery. Leukocyte filtration aims to physically remove activated leukocytes from the circulation during CPB. The technique has been used since the mid-1990s but its efficacy in attenuating the effects of inflammatory response remains controversial. This article presents a review of published trials investigating the effects of leukocyte filtration on humans undergoing cardiac surgery.