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A Recovery Cardiopulmonary Bypass Model Without Transfusion or Inotropic Agents in Rats

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Published on: March 23, 2018

Lung dysfunction following cardiopulmonary bypass.

Efstratios Apostolakis¹, Kriton S Filos, Efstratios Koletsis

¹Department of Cardiothoracic Surgery, University of Patras, School of Medicine, Patras, Greece.

Journal of Cardiac Surgery

|June 25, 2009

Summary

Open heart surgery and cardiopulmonary bypass can cause lung injury through systemic inflammation. This review details the mechanisms leading to postoperative lung dysfunction and abnormal gas exchange.

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Area of Science:

Cardiovascular Surgery
Pulmonary Medicine
Inflammation Research

Background:

Open heart surgery involves multiple factors contributing to lung injury.
Cardiopulmonary bypass (CPB), anesthesia, hypothermia, and transfusions can lead to diffuse lung injury, pulmonary edema, and impaired gas exchange.

Purpose of the Study:

To review the pathophysiological mechanisms of lung injury following open heart surgery.
To elucidate the role of systemic inflammation in CPB-induced lung dysfunction.

Main Methods:

Comprehensive literature search of Pubmed Medline and EMBASE (1966-2008).
Inclusion of clinical, experimental, basic science, and review papers.

Main Results:

CPB triggers a systemic inflammatory response, a key factor in lung injury.
Pro-inflammatory cytokines and endotoxin release during CPB cause neutrophil entrapment in pulmonary capillaries.
This leads to endothelial swelling, plasma extravasation, enzyme release, and alveolar congestion.

Conclusions:

Systemic inflammation following CPB is a primary driver of postoperative lung dysfunction.
Understanding these mechanisms is crucial for managing lung injury after cardiac surgery.