A nurse is caring for a 77-year-old patient. The nurse plans care for this patient based on the knowledge that the aging process impacts drug therapy in what important way?
A) Blood volume decreases
B) Subcutaneous tissue increases
C) Total body water increases
D) Muscle mass increases
A
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As patients age, the body undergoes many normal changes that can affect drug therapy, such as a decreased blood volume, decreased gastrointestinal (GI) absorption, reduced blood flow to muscles or skin, and changes in receptor site responsiveness. As a person ages, subcutaneous tissue decreases, total body water decreases, and muscle mass decreases.
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