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Background: The aim of this study is to investigate which anesthetic technique is superior on 30-day outcomes after primary total knee arthroplasty (TKA) in United States veteran patients. To our knowledge, this is the first account from the Veterans Health Administration comparing the effects of different anesthesia modalities in patients undergoing TKA.
Methods: The Veterans Affairs Surgical Quality Improvement Program database was utilized to analyze patients undergoing primary TKA during the period of 2008-2015. Subjects were divided into 2 cohorts based on the method of surgical anesthesia used: general anesthesia or neuraxial anesthesia. Propensity score matching was utilized to avoid possible selection bias between the 2 cohorts when assessing patient demographics and comorbidities. The 2 groups were analyzed for 30-day postoperative complications, using multivariable logistic regression techniques to evaluate independent associations between anesthetic method and postoperative outcomes.
Results: All Veterans Affairs patients undergoing primary TKA under general anesthesia (n = 32,363) and neuraxial anesthesia (n = 14,395) within the study period were included in this study. Following propensity score matching, multivariable analysis revealed significantly lower risks of cardiovascular (adjusted odds ratio [AOR] 0.74, 95% confidence interval [CI] 0.6-0.88, P < .001), respiratory (AOR 0.75, 95% CI 0.57-0.97, P = .03), and renal complications (AOR 0.62, 95% CI 0.4-0.9, P = .01) in patients receiving neuraxial anesthesia compared to those receiving general anesthesia. Neuraxial anesthesia was also associated with reduced hospital stay and lower odds of prolonged hospitalization (AOR 0.85, 95% CI 0.8-0.9, P < .001).
Conclusion: Veteran patients undergoing TKA under neuraxial anesthesia had reduced postoperative complications and decreased hospitalization stay compared to patients undergoing general anesthesia.
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| http://dx.doi.org/10.1016/j.arth.2020.06.030 | DOI Listing |
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