Abstract (EN):
Background & aims: Data on the prevalence of sarcopenia among hospitalized older patients are scarce
and there is no available information on the burden of sarcopenia among younger patients. The present
study aims to increase the knowledge about the frequency of sarcopenia among hospitalized patients
and to evaluate the influence of different diagnostic criteria in these estimates.
Methods: A cross-sectional study was conducted in hospitalized adult patients. Sarcopenia was defined,
according to the European Working Group on Sarcopenia in Older People (EWGSOP), as the presence of
both low muscle mass, assessed by Bioelectrical Impedance Analysis (BIA), adjusted for height, and low
muscle function (hand grip strength). Two other criteria were applied, also using hand grip strength for
evaluating muscle function, one that also assessed muscle mass by BIA, but adjusted for weight, and
another which estimated muscle mass based on mid-arm muscle circumference. Nutritional status was
evaluated by Patient-Generated Subjective Global Assessment. The degree of agreement between the
different diagnostic criteria was assessed using kappa. Multivariable logistic regression models were
used in order to identify factors associated with sarcopenia.
Results: 608 hospitalized adult patients aged 18 years composed the study sample. According to
EWGSOP's criteria, 25.3% patients were sarcopenic. However, depending on age and on the applied
criteria, frequency of sarcopenia varied from 5% to 41.1% for men and from 4.9% to 38.3% for women.
There was 95.7% (k ¼ 0.89) agreement between criteria that estimated muscle mass by BIA. According to
EWGSOP criteria approximately 20% of the non-undernourished patients were sarcopenic. Furthermore,
29.5% of overweight and 18.7% of obese patients were sarcopenic. Factors associated with sarcopenia
were male gender, age 65 years, moderate or severe dependence, being undernourished and admitted
to a medical ward.
Conclusions: Sarcopenia is frequent among hospitalized patients and varies widely depending on the
applied diagnostic criteria. Sarcopenia was identified in a considerable proportion of patients aged under
65 years and in non-undernourished, namely among overweight and obese.
Language:
English
Type (Professor's evaluation):
Scientific
Contact:
tamaral@fcna.up.pt
Notes:
Epub 2014 Dec 19.
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