How Swallow Pressures and Dysphagia Affect Malnutrition and Mealtime Outcomes in Long-Term Care

Malnutrition is a major cause of hospitalization for residents of long-term care facilities (LTC). Dysphagia is thought to contribute to malnutrition. Tongue weakness is suggested to predict poor food intake, longer meals, and dysphagia. We explored the relationships between tongue strength, dysphagia, malnutrition and mealtime outcomes in LTC residents. Data were collected from 639 LTC residents (199 male), aged 62–102 (mean 87). Maximum isometric tongue pressures (MIPs) and saliva swallow pressures (MSPs) were measured using the Iowa Oral Performance Instrument. Participants also completed the Screening Tool for Acute Neuro Dysphagia. Nutrition status was assessed using the Patient-Generated Subjective Global Assessment. A series of repeated meal observations provided measures of meal duration and calories consumed. Mean MIPs were 33 kPa (95% CI 29–37) and MSPs were 26 kPa (95% CI 23–29). The odds of showing signs of dysphagia were 3.7 times greater in those with MSPs less than 26 kPa ( p