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  • Title: Thirty-day complications in rheumatoid patients following total knee arthroplasty.
    Author: Jauregui JJ, Kapadia BH, Dixit A, Naziri Q, Hip-Flores DJ, Harwin SF, Mont MA.
    Journal: Clin Rheumatol; 2016 Mar; 35(3):595-600. PubMed ID: 26238666.
    Abstract:
    Although total knee arthroplasty (TKA) is highly successful for patients with end-stage rheumatoid arthritis (RA), the risks and complications associated with surgery in this cohort are less defined. The objectives of our study were to analyze the demographic and perioperative factors of RA patients that may affect post-TKA outcomes, as well as to assess the 30-day complication rates compared to osteoarthritis patients. We retrospectively evaluated the National Surgical Quality Improvement Program (NSQIP) database from 2006 to 2012 to assess all patients who underwent a primary TKA and had a diagnosis of rheumatoid arthritis (n = 141) or primary knee osteoarthritis (n = 7125). We evaluated and compared the demographic factors, social factors, preoperative factors, operative factors, and postoperative complications. The RA cohort had a lower mean age and body mass index than patients in the OA group. There was also a significantly higher incidence of women and Hispanics in the RA cohort. There was a lower incidence of diabetes and hypertension requiring medication in the rheumatoid cohort, but also a higher incidence of bleeding disorders. The RA cohort had an increased proportion of patients requiring blood transfusions and had a longer mean length of stay. The incidence of pneumonia and postoperative bleeding that required transfusion was also higher in RA patients. Rheumatoid patients had higher rates of wound infections, pulmonary embolisms, and deep vein thrombosis; however, these findings were not significant. Although RA patients with end-stage knee arthritis may benefit from TKA, these patients should be preoperatively optimized to minimize complication risks.
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