The Annals of Thoracic Surgery, Vol 37, 295-300, Copyright © 1984 by The Society of Thoracic Surgeons
Should the lungs be ventilated during cardiopulmonary bypass? Clinical, hemodynamic, and metabolic changes in patients undergoing elective coronary artery surgery
JL Svennevig, H Lindberg, O Geiran, BK Semb, M Abdelnor, S Ottesen and K Vatne
No beneficial effects were achieved by ventilating the lungs of a group of
10 patients during total extracorporeal circulation for coronary artery
bypass operation. Ventilation of nonperfused lungs, which was suggested to
prevent postoperative atelectasis, may even have negative effects.
Intrapulmonary shunting increased significantly (p less than 0.05), while
the shunt fraction in the nonventilated lungs of another group of 10
patients remained unchanged. There were only minor differences between the
two groups with respect to systemic and pulmonary hemodynamic changes.