Open AccessMuscle weakness assessment in older intensive care unit patients
Author(s) -
Amanda Colombo Peteck Lopes,
Paulo Henrique Coltro,
Vagner José Lopes,
Sandra Mari Pistore Fiori,
Jaqueline Santana Knapik,
Tatiane Caroline Boumer
Publication year - 2020
Publication title -
geriatrics, gerontology and aging
Language(s) - English
Resource type - Journals
eISSN - 2447-2123
pISSN - 2447-2115
DOI - 10.5327/z2447-212320202000034
Subject(s) - sedation , medicine , mechanical ventilation , muscle weakness , intensive care unit , weakness , muscle strength , ventilation (architecture) , anesthesia , physical therapy , surgery , mechanical engineering , engineering
After long periods of hospitalization, older adults may develop muscle weakness that can affect their functional independence after discharge. OBJECTIVE: To assess muscle weakness in older patients admitted to an ICU. METHOD: This cross-sectional, descriptive study with a quantitative approach assessed functional independence with the Katz Index and post-ICU muscle strength with a handgrip strength (HS) test and the Medical Research Council (MRC) sum-score. The sample consisted of 60 patients with an average age of 76 (60–99) years, 36 (60%) of whom were female. RESULTS: Post-ICU, 86.7% of the patients were functionally dependent. Female patients had significantly lower HS than males: 7 (0–24) vs. 17 (1–37) (p < 0.001). Female patients who received mechanical ventilation (MV) or sedation had significantly lower HS and MRC scores than those who did not (p < 0.001): HS MV 1 (0–13) vs. 11 (0–24) p < 0.001; MRC MV 35 (14–48) vs. 43 (27–57) p < 0.001; HS sedation 0 (0–12) vs. 9 (0–24) p < 0.001; MRC sedation 34 (14–36) vs. 42 (22–57) p < 0.001, respectively. Finally, there was an inversely proportional correlation between HS, MRC scores, and ICU length of stay, Spearman’s rho = -0.267 (p = 0.0039) and Spearman’s rho = -0.347 (p = 0.007), respectively. CONCLUSION: Older women who received mechanical ventilation and sedation have lower muscle strength than those who did not. As the ICU length of stay increases, muscle strength decreases.