An elderly client is admitted to the medical-surgical floor. On day two, the patient becomes very quiet, withdrawn, and answers questions with one word. The family states that this is unusual behavior and they are concerned. Which assessment tool would be most appropriate at this time to further evaluate the patient?
a. Mini-Mental State Exam (MMSE)
b. Confusion assessment model (CAM)
c. Global Deterioration Scale (GDS)
d. Katz Activity of Daily Living (KATZ)
