What physiologic change is important to consider for a homebound older adult client regarding pulmonary function?

Decreased blood oxygenation is significant when assessing pulmonary function in homebound older adult clients. As individuals age, various physiological changes can impair their lungs' ability to transfer oxygen into the bloodstream effectively. This can result from factors like reduced lung elasticity, weakened respiratory muscles, and decreased surface area for gas exchange due to structural changes in the lungs.

In older adults, decreased physical activity, which is common in homebound individuals, further exacerbates these issues, potentially leading to hypoxemia (low blood oxygen levels). Additionally, chronic conditions, such as COPD or heart disease, might contribute to further decreases in oxygenation. Recognizing this risk is crucial for proper assessment and intervention, such as monitoring oxygen levels and ensuring that appropriate support is provided to maintain adequate oxygenation and overall respiratory health.

Other potential options, such as increased blood volume or heightened respiratory rate, may not typically reflect the changes seen in this population. Increased lung elasticity is also uncommon with aging, as lung tissue tends to lose its elasticity, which further underscores why decreased blood oxygenation is a critical factor in evaluating the pulmonary function of older adults.