Which of the following findings would be considered an expected respiratory change in an older adult client?

Respiratory changes in older adults occur due to gradual structural and functional alterations in the lungs and thoracic cage. Aging leads to decreased lung elasticity, stiffening of the chest wall, and weakening of respiratory muscles, all of which affect ventilation efficiency. These changes may alter chest shape and reduce the effectiveness of breathing and airway clearance. Recognizing expected versus abnormal findings is essential when assessing respiratory status in this population. A. Increased lung elasticity is not expected with aging; instead, there is a loss of elastic recoil in lung tissue. This leads to air trapping and reduced efficiency of gas exchange, making breathing less effective rather than easier. Aging lungs become less compliant, contributing to decreased respiratory reserve. B. A barrel-shaped chest can develop as a result of long-term structural changes in the thoracic cage, including increased anterior-posterior diameter. This occurs due to decreased elasticity and air trapping over time, which alters normal chest configuration. While more prominent in chronic lung disease, mild structural changes can be seen with aging and are considered an expected finding. C. Increased respiratory muscle strength does not occur with aging; instead, muscle mass and strength decline. This weakens the diaphragm and intercostal muscles, reducing the efficiency of ventilation and the ability to respond to respiratory stress. Decreased muscle strength contributes to reduced respiratory reserve in older adults. D. The cough reflex typically diminishes with age rather than becoming enhanced. Reduced sensitivity of airway receptors and weaker respiratory muscles impair the ability to clear secretions effectively. This increases the risk of respiratory infections and aspiration, making an enhanced cough reflex an incorrect expectation.