In an older adult who is usually very alert, disorientation may be a sign of
a. iron deficiency.
b. malnutrition.
c. edema.
d. dehydration.
D
Disorientation may be a sign of dehydration, which is common in older adults, partly because their thirst mechanism is diminished. Iron deficiency anemia causes tiredness, but not disorienta-tion. Severe malnutrition may affect mental acuity, but is less likely than dehydration. Edema causes swelling, but does not usually affect orientation.
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