[Cardiopulmonary bypass in cardiac surgery].

Area of Science:

• Cardiovascular Surgery
• Immunology
• Biomaterials Science

Context:

• Cardiopulmonary bypass (CPB) is essential for cardiac surgery but can lead to systemic inflammation and organ dysfunction.
• The systemic inflammatory response syndrome (SIRS) is triggered by blood contact with artificial surfaces, mechanical stress, and surgical trauma during CPB.
• Despite risks, CPB remains crucial for most cardiothoracic procedures.

Purpose:

• To review the inflammatory and organ-specific complications associated with cardiopulmonary bypass (CPB).
• To discuss technical and surgical advancements aimed at mitigating the inflammatory response to CPB.
• To evaluate the efficacy of minimized CPB systems and biocompatible surfaces in reducing CPB-associated complications.

Summary:

• CPB initiates systemic inflammation (SIRS) due to blood-surface interactions, mechanical stress, and surgical trauma.
• Minimized CPB systems utilizing biocompatible surfaces effectively attenuate the inflammatory response.
• While off-pump surgery offers an alternative, it has limitations and cannot replace conventional CPB.

Impact:

• Highlights the need for strategies to reduce CPB-induced inflammation and organ damage.
• Demonstrates the potential of biocompatible materials and minimized systems in improving patient outcomes during cardiac surgery.
• Informs the development of safer CPB techniques and patient management protocols.