RESULTS
Three hundred and sixty-six patients were included in the study. PFT
were normal or mildly reduced in 190 patients (group 1) and moderately
to severely reduced in 176 patients (group 2). All patients with
pulmonary dysfunction in our study showed a restrictive pattern. Group 1
included more males and more patients who underwent CABG while Group 2
included more patients with preoperative stroke and more patients who
underwent combined procedures, mitral valve procedures, tricuspid valve
repair and MAZE procedure (table 1). Propensity matching identified 111
matched pairs in each group with balanced preoperative and operative
characteristics (table 2).
Compared to Group 1, Group 2 had longer duration of mechanical
ventilation [12 (7.5- 16) vs. 9 (6.5- 13) hours, p<0.001],
higher postoperative Creatinine [111 (90- 142) vs. 105 (81- 128)
µmol/dl, p=0.02] and higher hospital mortality (6.31% vs 0%,
p=0.02). The rest of post-operative data and complications are
illustrated in table 3.