• Clin Interv Aging · Jan 2019

    Preserved physical fitness is associated with lower 1-year mortality in frail elderly patients with a severe comorbidity burden.

    • Kristina Åhlund, Niklas Ekerstad, Maria Bäck, Björn W Karlson, and Birgitta Öberg.
    • Department of Physiotherapy, NU Hospital Group, Trollhättan, Sweden, kristina.ahlund@vgregion.se.
    • Clin Interv Aging. 2019 Jan 1; 14: 577-586.

    IntroductionPhysical deterioration in connection with a care episode is common. The aim of this study was, in frail elderly patients with a severe comorbidity burden, to analyze 1) the association between physical fitness measurements and 1-year mortality and 2) the association between preserved physical fitness during the first three months after discharge from emergency hospital care and 1-year prognosis.MethodsFrail elderly patients (≥75 years) in need of inpatient emergency medical care were included. Aerobic capacity (six-minute walk test, 6MWT) and muscle strength (handgrip strength test, HS) were assessed during the hospital stay and at a three-month follow-up. The results were analyzed using multivariate Cox regression; 1) 0-12-month analysis and 2) 0-3-month change in physical fitness in relation to 1-year mortality. The analyses were adjusted for age, gender, comorbidity and frailty.ResultsThis study comprised 408 frail elderly hospitalized patients of whom 390 were evaluable (mean age 85.7 years, Charlson's index mean 6.8). The three-month mortality was 11.5% and the 1-year mortality was 37.9%. After adjustments, the Cox-regression analysis showed that both 6MWT and HS were associated with 1-year mortality, HR6MWT 3.31 (95% CI 1.89-5.78, p>0.001) and HRHS 2.39 (95% CI 1.33-4.27, p=0.003). The 0-3-month change in the 6MWT and the HS were associated with 1-year mortality, where patients who deteriorated had a poorer prognosis than those with improved fitness, HR6MWT 3.80 (95% CI 1.42-10.06, p=0.007) and HRHS 2.21 (95% CI 1.07-4.58, p=0.032).ConclusionIn frail elderly patients with a severe comorbidity burden, physical fitness in connection with emergency hospital care was independently associated with 1-year mortality. Moreover, a change in physical fitness during the first months after hospital care was important for the long-term prognosis. These results emphasize the importance of providing hospital care designed to prevent physical deterioration in frail elderly patients.

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