Is atelectasis related to the development of postoperative pneumonia? a retrospective single center study

BMC Anesthesiology

Table 2 Potential predictors of postoperative pneumonia among patients undergoing elective non-cardiothoracic surgery

Variables	Odds ratio	95% confidence interval	P-value
BMI, kg/m²	0.887	0.823 – 0.956	0.002
Asthma	3.032	1.020 – 9.011	0.046
Hypertension	2.583	1.342 – 4.971	0.004
Hypoalbuminemia	4.270	2.319 – 7.861	0.000
ASA physical status (as continuous variable)	3.050	1.978 – 4.704	0.000
Type of surgery, relative to lower abdominal surgery
Brain surgery	3.614	0.988 – 13.225	0.052
Back and spine surgery	3.400	1.324 – 8.729	0.011
Upper abdominal surgery	1.872	0.781 – 4.488	0.160
Orthopedic surgery	2.277	0.962 – 5.390	0.061
Other surgeries	4.145	1.350 – 12.723	0.013
Type of reversal agents, relative to pyridostigmine			0.071
Sugammadex	1.645	0.861 – 3.143	0.132
None	5.454	1.119 – 26.587	0.036
Postoperative atelectasis	2.334	1.244 – 4.377	0.008

Results are from fully adjusted multivariate analysis with backward elimination (Wald test) accounting for all baseline characteristics
BMI Body mass index, ASA American society of anesthesiologists

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