PD980 - LOW GENIOHYOID MUSCLE CROSS-SECTIONAL AREA PREDICTS POOR PROGNOSIS WITHIN ONE YEAR AFTER DISCHARGE IN OLDER PATIENTS ADMITTED TO THE EMERGENCY DEPARTMENT

PD980

LOW GENIOHYOID MUSCLE CROSS-SECTIONAL AREA PREDICTS POOR PROGNOSIS WITHIN ONE YEAR AFTER DISCHARGE IN OLDER PATIENTS ADMITTED TO THE EMERGENCY DEPARTMENT

Y. Kasai^1,2,*, T. Inoue¹, T. Ozawa², Y. Arayama², R. Sato², N. Shimoda^2,3

¹Department of Physical Therapy, Niigata University of Health and Welfare, Niigata, ²Department of Rehabilitation, Odawara Municipal Hospital, Odawara, ³Department of Rehabilitation Science, Tokai University School of Medicine, Isehara, Japan

Rationale: The geniohyoid muscle may reflect sarcopenia and undernutrition; however, its prognostic value in acute care remains unclear. We aimed to determine whether the geniohyoid muscle cross-sectional area (GH-CSA) predicts poor prognosis within one year after discharge in older patients admitted the emergency department.

Methods: We conducted a retrospective cohort study of patients aged ≥65 years admitted between March and November 2024 who were hospitalized for ≥5 days. We measured GH-CSA at admission using ultrasonography and categorized using sex-specific cut-offs (≤194.7 mm² for men and ≤172.5 mm² for women)¹. Outcomes were all-cause mortality, rehospitalization, and their composite within 1 year after discharge. Kaplan–Meier and Cox regression analyses were performed.

Results: A total of 119 patients (60 men [50.1%]; median age, 84 years [78–88]) were included. The most common diagnoses were respiratory (29.4%), genitourinary (16.0%), and gastrointestinal (10.1%). Low GH-CSA was observed in 78 patients (65.5%). During follow-up, 37 (31.1%) died, 20 (22.5%) were rehospitalized, and 56 (47.0%) experienced the composite outcome. Low GH-CSA did not significantly predict all-cause mortality or rehospitalization, nor with the composite outcome in women. In men, low GH-CSA predicts a higher risk of the composite outcome (log-rank p=0.03; adjusted HR 2.53, 95% CI 1.01–6.32, p=0.047).

Conclusion: Low GH-CSA at admission predicts poor 1-year outcomes in older men and may serve as a prognostic marker in acute care.

References: 1. Mori T, Wakabayashi H, Fujishima I, et al. Cutoff value of the geniohyoid muscle mass to identify sarcopenic dysphagia by ultrasonography. Eur Geriatr Med. 2024;15:1031–1037.

Disclosure of Interest: None declared