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Hematic Antegrade Repriming: A Reproducible Method to Decrease the Cardiopulmonary Bypass Insult
Juan Blanco-Morillo1, José María Arribas-Leal1, Piero Farina2
1Cardiac Surgery Department (SCS), Virgen de la Arrixaca University Hospital, Murcia, Spain.
Insights
Retrograde autologous priming (RAP) reduces cardiopulmonary bypass (CPB) hemodilution. A novel hematic antegrade repriming method offers an easy, reliable alternative to decrease transfusion needs, emboli, and inflammatory responses post-CPB.
Area of Science:
- Cardiovascular Surgery
- Anesthesiology
- Biomedical Engineering
Background:
- Cardiopulmonary bypass (CPB) priming with crystalloid solutions causes hemodilution, increasing transfusion needs and cognitive impairment risk.
- Existing retrograde autologous priming (RAP) techniques for CPB have variable practices, limiting their evidence and benefits.
- Microbubbles persist despite crystalloid priming, posing a risk during CPB procedures.
Purpose of the Study:
- To introduce hematic antegrade repriming as a standardized and effective CPB priming method.
- To reduce transfusion requirements, microemboli, and inflammatory responses associated with CPB.
- To improve patient recovery outcomes following CPB procedures.
Main Methods:
- Description of a novel hematic antegrade repriming technique for CPB circuits.
- Application of the method across various commercially available CPB circuits.
- Evaluation of the technique's impact on hemodilution, transfusion needs, and inflammatory markers.
Main Results:
- Hematic antegrade repriming is presented as an easy and reliable method for CPB.
- The technique effectively decreases transfusion requirements and reduces emboli and inflammatory responses.
- Potential for cost reduction and improved postoperative recovery in CPB patients.
Conclusions:
- Hematic antegrade repriming offers a promising alternative to standard CPB priming.
- This method addresses limitations of crystalloid priming and current RAP techniques.
- Widespread adoption could enhance CPB patient safety and outcomes.
Abstract:
The current practice of cardiopulmonary bypass (CPB) requires a preoperative priming of the circuit that is frequently performed with crystalloid solutions. Crystalloid priming avoids massive embolism but is unable to eliminate all microbubbles contained in the circuit. In addition, it causes a sudden hemodilution which is correlated with transfusion requirements and an increased risk of cognitive impairment. Several repriming techniques using autologous blood, collectively termed retrograde autologous priming (RAP), have been demonstrated to reduce the hemodilutional impact of CPB. However, the current heterogeneity in the practice of RAP limits its evidence and benefits. Here, we describe hematic antegrade repriming as an easy and reliable method that could be applied with any circuit in the market to decrease transfusion requirements, emboli, and inflammatory responses, reducing costs and the impact of CPB on postoperative recovery.
