Background: Among the elderly, the rate of complications resulting from malnutrition is high. A mini nutritional assessment shortâform (MNAâSF) was confirmed overseas to identify malnutrition and predict clinical outcomes. This study aimed to evaluate the MNAâSF usefulness in Japanese smallâsized hospital.
Methods: This was a prospective cohort study conducted on hospitalized patients at smallâsized hospital, Department of General Internal Medicine which has 30 beds. All consecutive hospitalized patients for 4 months were included. A MNAâSF assessment on admission was implemented as exposure factor. Primary outcomes included death and complications such as infectious disease, organ failure, delirium, falls, diagnosis of malignancy and poor oral intake. Secondary outcomes including days of hospitalization and discharge rate back to home were also measured.
Results: 177 patients were analyzed with the MNAâSF assessment. Twentyâthree (13%) patients were ânormal nutritional statusâ, 64 (36%) were âat riskâ and 90 (51%) were âmalnourishedâ. The mortality rate was 0, 1.4 and 6.9 cases/1000 personâday (incidence ratio 4.9 times), respectively. The complications incidence rate was 0, 18 and 30.1 cases/1000 personâday (incidence ratio 1.7 times), respectively. The number of days in hospital were 11.1, 14.0 and 21.6 days (p < 0.01), respectively. The discharge to home rate was 90.4, 84.4 and 53.3% (p < 0.01), respectively.
Conclusions: Among all patients on a Japanese general medicine ward, those with poor nourishment assessed by the MNAâSF showed a high death rate and complication incidence rate. And they are also proved to be difficult to early discharge from the hospital back to the patient's homes.