Factors associated with pulmonary complacence in patients submitted to coronary artery bypass grafting: cross-sectional study.

BACKGROUND Coronary artery bypass grafting (CABG) is one of the most studied surgical procedures worldwide and is associated with deleterious effects on respiratory function in the postoperative period, corroborating the incidence of factors that can cause a decrease in lung compliance, generating possible respiratory complications. OBJECTIVE To identify factors associated with low pulmonary compliance in patients submitted to coronary artery bypass grafting. METHODS This is a cross-sectional study. After admission to the Intensive Care Unit (ICU), the static compliance calculation was performed and the patients were divided into two groups: Low Compliance Group (LCG) and Normal Compliance Group (NCG), to verify which factors were associated with low compliance. RESULTS The final sample consisted of 62 patients, with male prevalence, with a mean age of 60 ± 9.5 years. Clinical variables body mass index (BMI) (P=0.04), smoking (P=0.05), chronic obstructive pulmonary disease (P < 0.001) and ejection fraction (P=0.03) were associated with reduced static pulmonary compliance. CONCLUSION It is concluded that factors such as age, COPD, smoking, BMI and ejection fraction may be associated with worsening pulmonary compliance after CABG.