Swallowing dysfunction as risk factor for undernutrition in older people admitted to Swedish short-term care : a cross-sectional study

BACKGROUND: Swallowing dysfunction and risk of undernutrition increase the risk of pneumonia, morbidity, and mortality. Short-term care is an unexplored care context, where many older people stay yearly. AIM: This cross-sectional study aimed to describe and analyze the relationship between swallowing dysfunction and risk of undernutrition among older people in short-term care, including potential gender-related differences. METHODS: In total, 391 people (209 women), aged ≥ 65 years (median age 84 years) and admitted to short-term care in five Swedish counties participated. They went through a timed water swallow test to assess swallowing dysfunction, including abnormal swallowing capacity and signs of aspiration (i.e., cough and voice change). Risk for undernutrition was assessed using the Minimal Eating Observation and Nutrition Form-version II. RESULTS: Swallowing dysfunction was observed in 248 of 385 (63%) participants, including abnormal swallowing capacity in 213 of 385 (55%) and aspiration signs in 127 of 377 (34%). Abnormal swallowing capacity was more frequent among women (p = 0.030), whereas men with normal swallowing capacity exhibited signs of aspiration more frequently (cough p = 0.038, voice change p = 0.004). Risk of undernutrition was found in 91 of 390 (23%) participants, more frequently among women (p = 0.007). A logistic regression model revealed an increased risk of undernutrition among older people with abnormal swallowing capacity (OR 1.74, 95% CI 1.04-2.92, p = 0.034). CONCLUSIONS: The high prevalence of swallowing dysfunction and risk of undernutrition highlight the need for a systematic screening program and feasible treatment to improve swallowing function for adequate and safe food intake among older people in short-term care. CLINICAL TRIAL REGISTRATION: This study was registered with ClinicalTrials.gov on July 4, 2016, under NCT02825927