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  • Title: Effect of diabetes mellitus on perioperative complications and hospital outcomes after ankle arthrodesis and total ankle arthroplasty.
    Author: Schipper ON, Jiang JJ, Chen L, Koh J, Toolan BC.
    Journal: Foot Ankle Int; 2015 Mar; 36(3):258-67. PubMed ID: 25413307.
    Abstract:
    BACKGROUND: The aim of this investigation was to analyze a nationally representative admissions database to evaluate the effect of diabetes mellitus on the rate of perioperative complications and hospitalization outcomes after ankle arthrodesis (AAD) and total ankle arthroplasty (TAA). METHODS: Using the Nationwide Inpatient Sample database, 12 122 patients who underwent AAD and 2973 patients who underwent TAA were identified from 2002 to 2011 based on ICD-9 procedure codes. The perioperative complications and hospitalization outcomes were compared between diabetic and nondiabetic patients for each surgery during the index hospital stay. RESULTS: The overall complication rate in the AAD group was 16.4% in diabetic patients and 7.0% in nondiabetic patients (P < .001). Multivariate analysis demonstrated that diabetes mellitus was independently associated with an increased risk of myocardial infarction (relative risk [RR] = 3.2, P = .008), urinary tract infection (RR = 4.6, P < .001), blood transfusion (RR = 3.0, P < .001), irrigation and debridement (RR = 1.9, P = .001), and overall complication rate (RR = 2.7, P < .001). Diabetes was also independently associated with a statistically significant increase in length of hospital stay (difference = 0.35 days, P < .001), more frequent nonhome discharge (RR = 1.69, P < .001), and higher hospitalization charges (difference = $1908, P = .04). The overall complication rate in the TAA group was 7.8% in diabetic patients and 4.7% in nondiabetic patients. Multivariate analysis demonstrated that diabetes was independently associated with increased risk of blood transfusion (RR = 9.8, P = .03) and overall complication rate (RR = 4.1, P = .02). Diabetes was also independently associated with a statistically significant increase in length of stay (difference = 0.41 days, P < .001) and more frequent nonhome discharge (RR = 1.88, P < .001), but there was no significant difference in hospitalization charges (P = .64). CONCLUSION: After both AAD and TAA, diabetes mellitus was independently associated with a significantly increased risk of perioperative complications, nonhome discharge, and length of hospital stay during the index hospitalization.
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