IMPACT OF BMI AND ASA GRADE ON LENGTH OF STAY FOLLOWING PRIMARY TOTAL KNEE REPLACEMENT

BackgroundIncreasing number of studies investigating surgical patients have reported longer length of stay (LOS) in hospital after an operation with higher ASA grades. However, the impact of Body Mass Index (BMI) on LOS in hospital post Total Knee Replacement (TKR) remains a controversial topic with conflicting findings in reported literature. In our institution, we recently adopted a weight reduction program requiring all patients with raised BMI to participate in order to be considered for elective TKR.ObjectivesThis has prompted us to investigate the impact BMI has on LOS compared to the more established impact of ASA grade on patients following Primary TKR.MethodsA retrospective analysis was conducted on all elective primary TKR patients between November 2013 and May 2014. LOS was compared in BMI groups 40 and ASA grades 1–2 and 3–4. ANOVA and independent t-test were used to compare mean LOS between BMI groups and ASA grades, respectively.ResultsTwo hundred and thirty six TKR were anal...