What enhances the in-hospital mortality following total hip arthroplasty? A national inpatient sample-based study

Purpose With prolonged life expectancy and advancements in prosthetic designs, the proportion of patients belonging to diverse age groups undergoing total hip arthroplasty (THA) has progressively increased. In this context, the details regarding risk factors associated with mortality after THA, and its prevalence need to be clearly understood. This study sought to identify the possible co-morbidities associated with post-THA mortality. Methods Based on Nationwide Inpatient Sample (NIS) database, patients undergoing THA from 2016 to 2019 (using ICD-10CMP) were identified. The included cohort was stratified into two groups: “early mortality” and “no mortality” groups. The data regarding patients’ demographics, co-morbidities, and associated complications were compared between the groups. Results Overall, 337,249 patients underwent THA, among whom, 332 (0.1%) died during their hospital admission (“ early mortality” group ). The remaining patients were included under “ no mortality” group (336,917 patients). There was significantly higher mortality in the patients, who underwent emergent THA (as compared with elective THA: odd’s ratio 0.075; p