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The Journal of Thoracic and Cardiovascular Surgery, Vol 93, 253-260, Copyright © 1987 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Influence of operations with cardiopulmonary bypass on polymorphonuclear leukocyte function in infants

FA Burrows, RW Steele, DJ Marmer, SH Van Devanter and GR Westerman

To determine the effect of operations with cardiopulmonary bypass on the immunologic function of polymorphonuclear leukocytes in infants, we studied polymorphonuclear leukocyte function and immunologic profile in 16 infants undergoing repair of congenital heart lesions. An oxygen/air/high-dose fentanyl anesthetic was used for all patients. Absolute neutrophil count increased significantly (p less than 0.05) after bypass and remained increased 48 hours afterward. Chemotaxis, random migration of polymorphonuclear leukocytes, and phagocytic index were unaffected, but bactericidal capacity decreased significantly immediately after cardiopulmonary bypass and remained decreased 48 hours later. Serum opsonizing capacity to bacterial and fungal antigens was variably altered, and complement factors 3 and 4 decreased significantly after cardiopulmonary bypass. Total hemolytic complement decreased significantly immediately after cardiopulmonary bypass and returned to normal by 48 hours. These data suggest that operations with cardiopulmonary bypass in infants significantly affect the immunologic function of polymorphonuclear leukocytes and result in consumption of complement.

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