Abstract
Total knee arthroplasty (TKA) is a common procedure for which patient factors are known to affect perioperative outcomes. Asthma has not been specifically considered in this regard, although it is the most common inflammatory airway disease and predisposes to osteoarthritis. Adult patients undergoing TKA were identified from 2015 to 2021-Q3 M157 PearlDiver data sets. Asthma patients were matched to those without 1:1 based on age, sex, and Elixhauser Comorbidity Index (ECI). The incidence of 90-day adverse events and 5-year revisions were compared using multivariable logistic regression ( P < 0.0023). The matched asthma group was then stratified based on disease severity for analysis of 90-day aggregated (any, severe, and minor) adverse events. Among 721,686 TKA patients, asthma was noted for 76,125 (10.5%). Multivariable analysis revealed that patients with asthma were at increased odds of multiple 90-day pulmonary, non-pulmonary, and aggregated adverse events, as well as emergency department visits. Furthermore, patients with asthma had 1.17 times greater odds of 5-year revisions ( P < 0.0001). Upon secondary analysis stratifying asthma by severity, patients with all severity levels of asthma showed elevated odds of adverse events after TKA. These associations increased in odds with increasing severity of asthma. Over one-tenth of patients undergoing TKA were identified as having asthma, and these patients were at greater odds of numerous pulmonary and non-pulmonary adverse events (a trend that increased with asthma severity), as well as 5-year revisions. Clearly, patients with asthma need specific risk mitigation strategies when considering TKA. III.
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More From: The Journal of the American Academy of Orthopaedic Surgeons
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