Influence of BMI on short-term surgical outcome after XXXX surgery: a study based on the Swedish national quality registry.

@entity1 @entity548 @entity28 @entity5 @entity260 @entity1442 @entity14
PURPOSE: It is well known that an increased body mass index (BMI) is associated with @entity5 development. Results from studies on @entity14 ( @entity14 ) treatment outcome and BMI are however conflicting. Our hypothesis was that a high as well as a low BMI will have negative effects on short-term outcome after @entity14 surgery. METHODS: Data from the Swedish @entity14 Registry from 2007 to 2012 was analyzed. A total of 24,587 @entity1 operated on for @entity14 were included in the study and divided into one of five categories for BMI. @entity548 , operating time, surgical complications, and 30-day mortality were compared between groups. RESULTS: @entity548 as well as operating time was significantly increased when comparing normal-weight @entity1 to overweight (p   <   0.001). 15.1  % of normal-weight @entity1 suffered from postoperative surgical complications. This was significantly increased with each BMI step but did not affect the 30-day mortality. However, underweight @entity1 , on the other hand, had fewer complications (13.3  %) but an increased 30-day mortality. CONCLUSION: Longer operating times and increased perioperative @entity548 may be explanatory factors behind @entity260 rates for @entity14 @entity1 with higher BMI. In underweight @entity1 , @entity1442 may be a reason for a higher 30-day mortality. To improve outcome, specific precautions are suggested when operating on under- as well as overweight @entity14 @entity1 . We also suggest that the registry introduces a better marker than BMI for central visceral fat-the link between @entity28 and @entity5 development. Further studies are needed to analyze the findings in detail and to study long-term effects.
