The Impact of Obesity on Perioperative Resource Utilization after Elective Spine Surgery for XXXX .

@entity1 @entity179 @entity28
Study Design   Retrospective case series. Objective   To determine the effect of @entity28 on the resource utilization and cost in 3270 consecutive @entity1 undergoing elective noninstrumented decompressive surgeries for @entity179 at Mayo Clinic Rochester between 2005 and 2012. Methods   Groups were assessed for baseline differences (age, gender, and American Society of Anesthesiologists [ASA] classification, procedure type, and number of operative levels). Outcome variables included the transfusion requirements during surgery, the total anesthesia and surgical times, intensive care unit (ICU) admissions, standardized costs, as well as the ICU and hospital length of stay (LOS). Regression analysis was used to evaluate for strength of association between @entity28 and outcome variables. Results   Baseline differences between the groups (nonobese: n   =   1,853; @entity28 : n   =   1,417) were found with respect to age, ASA class, gender, procedure type, and number of operative levels. After correcting for differences, we found significant associations between @entity28 and surgical (p   <   0.0001) and anesthesia times (p   <   0.0001) and hospital LOS (p   <   0.0001). Additionally, ICU admission rates (p   =   0.02) and requirement for postoperative ventilation (p   =   0.048) were significantly higher in @entity28 @entity1 . Finally, mean difference in total cost ( 1,632, p   <   0.0001) was significantly higher for the @entity28 cohort. Conclusion   Obesity is associated with increased resource utilization and cost in @entity1 undergoing a noninstrumented decompressive surgery for @entity179 .
