Arthritis Clinical Trial
Official title:
The Effect of Preop Nutritional Status on Outcomes of Staged Bilateral Total Knee Replacements Performed Within One Week
To determine if preop nutritional status is an indicator for outcomes of bilateral staged total knee arthroplasty. The investigators expect that patients having staged bilateral total knee arthroplasty with the second procedure performed within one week of the first and have a total lymphocyte count >1500 per cubic millimeter and serum albumin level >35 grams per liter will have the same or less complications and shorter length of stay than those with lower lymphocyte count and albumin level.
Association of malnutrition with postoperative complications after TKA has been reported in
the form of increased rate of periprosthetic infection, longer hospital stay, etc. Reduced
serum albumin and total lymphocyte count are commonly used to define malnutrition.
The goal was to evaluate the impact of the nutritional status on the outcomes of primary
staged bilateral TKAs performed one-week apart during two separate hospitalizations.
Fifty consecutive patients with mean age of 67 years, mean BMI of 28.9 and 2.3 mean ASA
score were followed for one year.
Prior to the first surgery 32% had a TLC <1500 cells/mm3 and 84% had a SA <3.5 g/dL. Before
the second surgery 62% had a reduced TLC and all but one had a reduced SA.
Nine patients had a total of 12 perioperative blood transfusions (2 after the first surgery
and 10 after the second surgery). The average length of stay was 3 days after each TKA.
None of the patients with the lowest TLC or SA before the first or the second stage had a
revision.
Bilateral TKAs performed seven days apart in two separate hospitalizations is a safe and
practical approach for qualified patients. The postoperative course was similar after each
surgery. The preoperative nutritional status defined by TLC and SA did not influence the
postoperative outcomes.
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