Which nursing intervention supports the principles on which the cross-links theory of ag-ing is based?
a. Applying an elastin sustaining moisturizer to an adult patient's skin
b. Assessing a patient's family history for genetic diseases and disorders
c. Questioning a patient regarding long-term exposure to environmental toxins
d. Assisting an adult patient is selecting foods that are high in vitamins A, C, and E
ANS: A
Cross-links form in elastin in connective tissue. Elastin is similar to collagen in that it main-tains tissue flexibility and permeability. The effects of cross-linking in elastin fibers are most pronounced in the changes that occur in facial skin with aging. Skin becomes brittle, dry, and saggy, and it appears translucent. Applying appropriate moisturizes helps minimize the ef-fects. Genetic history is relevant to the genetic theory of aging. Exposure to environmental toxics applies to the biological theory of aging. Vitamin A, C, and E consumption related to the free-radical theory of aging.
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