Incidence and risk factors of postoperative atelectasis in pediatric cardiac surgery with cardiopulmonary bypass

Abstract

　【Purpose】　We aimed to identify the incidence and risk factors of postoperative atelectasis in pediatric cardiac surgery with cardiopulmonary bypass (CPB).

　【Method】　Patients who underwent elective cardiac surgeries with CPB with age ranging from 1 month to less than 13 years in Osaka Medical Center and Research Institute for Maternal and Child Health between January and December 2013 were enrolled. The incidence and risk factors of intraoperative atelectasis were evaluated.

　【Result】　In total, 226 patients were enrolled in this study. Because of lack of catheter examination data of 48 patients, the data of only 178 patients were analyzed. Postoperative atelectasis was found in 58 patients (32.6%). Multivariate analysis revealed that age (OR, 0.96; 95% CI, 0.94~0.99; p=0.039) and CPB time (OR, 1.01; 95% CI, 1.00~1.01; p=0.0002) were significant risk factors of postoperative atelectasis.

　【Conclusion】　Postoperative atelectasis occurred in 32.6% of patients, and young age and longer CPB time were significant risk factors.