Perioperative morbidity and mortality of same-day bilateral TKAs: incidence and risk factors

Lazaros Poultsides, Stavros Memtsoudis, Alejandro Gonzalez Della Valle, Ivan De Martino, Huong T Do, Michael Alexiades, Thomas Sculco
Clinical Orthopaedics and related Research 2014, 472 (1): 111-20

BACKGROUND: Controversy persists regarding the safety of same-day bilateral TKAs, and indications for same-day versus staged bilateral surgery need to be clarified.

QUESTIONS/PURPOSES: We compared the (1) 30-day mortality, (2) rates of in-hospital complications, (3) in-hospital charges, and (4) risk factors for complications among patients undergoing same-day and staged bilateral TKAs at two separate admissions within 1 year either less than 3 months apart (staged 0-3) or more than 3 months apart (staged 3-12) at an institution where same-day bilateral TKAs were discouraged in patients with more severe medical comorbidities.

METHODS: We analyzed institutional data from 3960 same-day, 172 staged 0-3, and 1533 staged 3-12 bilateral TKAs performed between 1998 and 2011. Patient demographics, comorbidities, and 30-day mortality were tabulated. Same-day patients were younger and healthier. Outcomes of interest included complications, blood transfusions, transfer to rehabilitation, and in-hospital charges. Regression models were conducted to identify independent risk factors for major morbidity or mortality.

RESULTS: There were no differences in 30-day mortality among groups. The same-day group experienced more acute postoperative anemia, blood transfusions, and transfers to rehabilitation, but otherwise had complications comparable to those of the staged groups. In-hospital charges were lower in the same-day group. Congestive heart failure and pulmonary hypertension were the most significant factors associated with morbidity and mortality in the same-day group.

CONCLUSIONS: In a high-volume subspecialty setting in which patients undergoing same-day bilateral TKAs were generally much healthier and younger, we found that same-day bilateral TKAs appeared to be safe.

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