• Nutrition · Sep 2024

    Body mass index-adjusted calf circumference is associated with mortality in hospitalized older patients with excess weight.

    • Jarson Pedro da Costa Pereira, Maria Cristina Gonzalez, Carla M Prado, Poliana Coelho Cabral, Tais Galdencio do Nascimento, Maria Karolainy do Nascimento, Alcides da Silva Diniz, Claudia Porto Sabino Pinho Ramiro, and FayhAna Paula TrussardiAPTPostgraduate Program in Health Science, Health Science Center, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil; PesqClin Lab, Onofre Lopes University Hospital, Brazilian Company of Hospital Services .
    • Postgraduate Program in Nutrition and Public Health, Department of Nutrition, Federal University of Pernambuco, Recife, Pernambuco, Brazil.
    • Nutrition. 2024 Sep 1; 125: 112505112505.

    ObjectivesGiven the innovative nature of the method, our study aimed to assess the prognostic significance of body mass index (BMI)-adjusted calf circumference (CC) in older patients who are hospitalized.MethodsThis was a unique analysis as part of other cohorts comprising general hospitalized patients aged 60 years or older of both sexes. Only patients with excess weight (BMI ≥ 25 kg/m2) were included. CC was adjusted by reducing 3, 7, or 12 cm for BMI (in kg/m2) within 25-29.9, 30-39.9, and ≥40 kg/m2, respectively. CC was considered low if ≤ 34 cm for males and ≤ 33 cm for females. Clinical outcomes included prolonged length of hospital stay (LOS) and mortality.ResultsA total of 222 patients were included. After BMI adjustments, 72.1% of the patients were reclassified from a normal CC category to a low CC category. The frequency of low CC increased from 33.8% to 81.9% following BMI adjustments. Among those reclassified to the low CC, 11 died, compared to only 2 patients in the group that maintained a normal CC classification. BMI-adjusted CC was inversely associated with mortality (HR adjusted 0.84, 95% CI 0.73 to 0.95), but not with prolonged LOS.ConclusionsOur novel study highlights the prognostic value of BMI-adjusted CC. As an anthropometric marker of muscle mass, it proved to be a predictor of mortality in older patients with high BMI. This adjustment is further important because it may help to better detect low muscle mass in these patients where such conditions might be masked.Copyright © 2024 Elsevier Inc. All rights reserved.

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