Methods:
This is a retrospective propensity score matched study that included 366
patients with congestive heart failure who underwent cardiac surgery and
had preoperative pulmonary function test. The patients were divided into
two groups: Group 1; who had a normal or mild reduction in pulmonary
function tests and group 2; who had moderate to severe reduction in
pulmonary function tests. The postoperative outcomes, including
pulmonary complications, were compared between the two groups.