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Concentrated platelets harvesting before cardiopulmonary bypass improved cardiac and pulmonary function
R Kunitomo1, N Kitamura, J Utoh
1The First Department of Surgery, Kumamoto University School of Medicine, Kumamoto, Japan. ryuji@kaiju.medic.kumamoto-u.ac.jp
Insights
Concentrated platelet (P-con) sequestration during cardiopulmonary bypass improved cardiac and pulmonary function post-surgery. This technique may reduce inflammation and injury by removing platelets and leukocytes.
Area of Science:
- Cardiovascular Surgery
- Hematology
- Immunology
Background:
- Cardiopulmonary bypass (CPB) can impair platelet function and exacerbate inflammatory responses.
- Concentrated platelet (P-con) sequestration during CPB aims to preserve platelet function.
- P-con also removes leukocytes, potentially mitigating CPB-associated inflammation and injury.
Purpose of the Study:
- To evaluate the impact of P-con on cardiac and pulmonary function after cardiac surgery.
- To determine if simultaneous platelet and leukocyte sequestration influences post-CPB recovery.
Main Methods:
- Retrospective analysis of 53 patients undergoing cardiac surgery.
- Comparison between 20 patients in the P-con group and 33 in the control group.
- Evaluation of cardiac and pulmonary function parameters pre- and post-operatively.
Main Results:
- No significant differences in baseline characteristics or initial cardiac/pulmonary function.
- P-con group showed significantly improved stroke volume index, left ventricular stroke work index, and arterial oxygen tension/inspired oxygen fraction ratio.
- No significant differences in dopamine use, cardiac index, pulmonary capillary wedge pressure, or intubation duration.
Conclusions:
- P-con sequestration during CPB enhances cardiac and pulmonary function post-cardiac surgery.
- Simultaneous removal of platelets and leukocytes by P-con may be responsible for improved outcomes.
- This technique offers a potential strategy to mitigate CPB-related complications.
Background:
Sequestration of concentrated platelets (P-con) during cardiopulmonary bypass (CPB) has been performed to preserve platelet function after cardiac surgery. Since P-con also harvests leukocytes simultaneously, there might be a possibility that the inflammatory effects or ischemia-reperfusion injuries associated with CPB, such as a cardiac or pulmonary dysfunction after cardiac surgery, are reduced with its use.
Methods:
We retrospectively evaluated 53 patients who underwent cardiac surgery after the introduction of the P-con technique at our institute. There were 20 patients in the P-con group and 33 patients in the control group in whom concentrated platelet were not harvested.
Results:
The patients characteristics and preoperative cardiac and pulmonary function did not differ between the two groups. The percentages of platelets and leukocytes sequestrated were 20.2+/-5.4% and 8.5+/-3.9% of the total estimated circulating cell counts, respectively. There were no significant differences in the postoperative dose of dopamine used, cardiac index, pulmonary capillary wedge pressure or intubation period between the two groups. However, the stroke volume index (p=0.005), left ventricular stroke work index (p=0.002), and ratio of the arterial oxygen tension to the inspired fraction of oxygen on extubation (p=0.02) were significantly greater in the P-con group as compared with those in the control.
Conclusions:
P-con improved cardiac and pulmonary function after CPB. Simultaneous sequestration of platelets and leukocytes by P-con during CPB may contribute to the improvement of cardiac and pulmonary function after cardiac surgery.
