This study was performed to determine the changes in vital functions and the factors affecting them in hospitalized elderly patients. The study population consisted of 176 hospitalized patients, 65 years old and without dementia. Patients' vital functions, i.e., cognitive functions, motivation, and activities of daily living (ADL), were evaluated at the time of hospitalization and discharge. The changes before and after hospitalization, and 12 variables affecting these functions, were examined. The results indicated that cognitive function and motivation decreased after hospitalization, but there were no changes in ADL. The factors affecting the decreased vital functions included age, diagnosis and treatment department, and the number of days spent in the hospital. The results of this study suggested that early evaluation of vital functions, and preventative nursing intervention for high-risk patients may be necessary to prevent decreases in vital functions in the elderly during hospital stays.
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