Effect of pre-operative hypoxemia on the occurrence and outcomes of post-operative ARDS in Stanford type a aortic dissection patients

Table 2 Multivariable regressions analysis for the effects of pre-operative hypoxemia on the risk of simple hypoxemia and ARDS after surgery

Variable	Model I (OR, 95 CI %)		Model II (OR, 95 CI %)		Model III (OR, 95CI %)
Variable	Simple hypoxemia ARDS		Simple hypoxemia ARDS		Simple hypoxemia ARDS
Pre-operative hypoxemia	5.17 (2.02–13.27)	6.28 (2.55–18.27)	4.00 (1.53–10.58)	4.70 (1.67–13.25)	4.81 (1.67–13.81)	8.51 (2.64–27.47)
P-value	0.01	< 0.01	0.005	0.003	0.004	< 0.01

Model I, unadjusted variable; Model II, adjusted for BMI and hypertension; Model III, adjusted for BMI, hypertension, onset to operation time, pre-operative leukocyte, operation time, surgical method and perioperative blood loss.

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