Nineteen selected patients were operated of coronary artery bypass surgery or aortic valvular replacement. In this cohort a bronchoalveolar lavage was performed before and after cardiopulmonary bypass. A rise in the polimorphonuclear neutrophils count was found in the post-bypass lavage group. The increase on secuestration of neutrophils by the lung could be a manifestation of lung injury due to the cardiopulmonary bypass. A review of this topic is presented.
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