The Association of Age, Anxiety, and Outcomes following Coronary Artery Bypass Graft Surgery
The goal of this study was to examine the association of age, anxiety, and outcomes following coronary artery bypass graft surgery. A retrospective analysis of the 2008 Nationwide Inpatient Sample (NIS) database was conducted. Multivariate regression analysis and logistic regression analyses were conducted. Three mediation models were conducted to examine a clinical diagnosis of anxiety as a potential mediator variable in predicting the relation between age and CABG outcomes length of stay, mortality ( 1=died, 0=did not die), and patient disposition (non routine= 0, routine=1). The findings of this study indicated that patients who died and experienced non-routine discharge status following CABG surgery were significantly older, sicker, and had the presence of anxiety comparable to those who lived, experienced a routine discharge status, and did not have the presence of anxiety. Moreover, anxiety was shown to partially mediate the relationship between age and outcomes following CABG surgery. Results from this study provide additional support for the importance of pre-surgery screening for anxiety as well as the development of short-term treatments for anxiety that may facilitate better outcomes following CABG surgeries.