Changes of pulmonary ventilatory function during open heart surgery / 中华麻醉学杂志

ABSTRACT

Objective: To observe the changes of the pulmonary ventilatory function during cardiac valve operation under cardiopulmonary bypass(CPB). Method: Thirty-four patients undergoing cardiac valve operation were selected. The pulmonary function was measured with side stream spirometer. Result: P_(peak) and P_(plat) did not have any significant changes within 60 min after CPB, but increased significantly at the end of surgery and after closure of sternum(P