The nurse is assessing the lungs of an older adult. Which of these changes are normal in the respiratory system of the older adult?
a. Severe dyspnea is experienced on exertion, resulting from changes in the lungs.
b. Respiratory muscle strength increases to compensate for a decreased vital capacity.
c. Decrease in small airway closure occurs, leading to problems with atelectasis.
d. Lungs are less elastic and distensible, which decreases their ability to collapse and recoil.
ANS: D
In the aging adult, the lungs are less elastic and distensible, which decreases their ability to collapse and recoil. Vital capacity is decreased, and a loss of intra-alveolar septa occurs, causing less surface area for gas exchange. The lung bases become less ventilated, and the older person is at risk for dyspnea with exertion beyond his or her usual workload.
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