Effect of Season and Climate on in-hospital Mortality and Length of Stay for Patients With Type A Aortic Dissection

Objective: To investigated the effects of seasonal and climatic changes on in-hospital mortality and length of stay (LOS) for postoperative patients with type A acute aortic dissection (AAD). Methods: The clinical data of 404 patients diagnosed with type A AAD in our hospital and the relevant meteorological data were retrospectively collected and analyzed from January 2016 to December 2019. Results: The multivariate unconditional logistic regression analysis showed that admission in autumn (OR=4.027, 95% CI=1.023-17.301) and coronary heart disease (odds ratio OR=7.669, 95% CI=1.20-48.689) were increased risk factors for postoperative in-hospital mortality in patients with type A AAD; admission in autumn (95% CI=2.719-7.921, P=0.041) and hypertension (95% CI=1.192-5.106, P=0.035) for type A AAD patients were increased risk factors for LOS. Conclusion: Patients with admission in autumn or coronary heart disease appeared to increasing effects on postoperative in-hospital mortality for type A AAD. Patients with admission in autumn or hypertension seemed to be associated with longer LOS.