What issue is typically associated with emphysema?

What issue is typically associated with emphysema?

• A. Decreased gas exchange
• B. Increased residual volume
• C. Reduced lung compliance
• D. Increased oxygen saturation

Answer: (B)

Emphysema is characterized by the destruction of the alveolar walls, leading to the formation of larger air spaces and a significant loss of elastic recoil. This anatomical change results in an increase in residual volume, which is the amount of air remaining in the lungs after a forceful expiration. As the alveoli become damaged, they are less able to efficiently exchange gases, primarily oxygen and carbon dioxide, which contributes to the body not receiving enough oxygen and difficulty in expelling carbon dioxide. The increased residual volume is a direct consequence of the loss of elasticity in the lung tissue, leading to an air trapping phenomenon during exhalation. This accumulation of air means that the lungs cannot fully expel the stale air, which significantly contributes to the pathophysiology of emphysema. In contrast, other options like decreased gas exchange can occur as a secondary effect but are not as directly tied to the primary physiological defect of emphysema as increased residual volume. Similarly, lung compliance is often increased rather than reduced in emphysema due to the loss of elastic recoil, allowing the lungs to expand more during inhalation but failing to effectively expel air. Increased oxygen saturation does not typically occur in emphysema; instead, patients often experience reduced oxygen

Emphysema is characterized by the destruction of the alveolar walls, leading to the formation of larger air spaces and a significant loss of elastic recoil. This anatomical change results in an increase in residual volume, which is the amount of air remaining in the lungs after a forceful expiration.

As the alveoli become damaged, they are less able to efficiently exchange gases, primarily oxygen and carbon dioxide, which contributes to the body not receiving enough oxygen and difficulty in expelling carbon dioxide. The increased residual volume is a direct consequence of the loss of elasticity in the lung tissue, leading to an air trapping phenomenon during exhalation. This accumulation of air means that the lungs cannot fully expel the stale air, which significantly contributes to the pathophysiology of emphysema.

In contrast, other options like decreased gas exchange can occur as a secondary effect but are not as directly tied to the primary physiological defect of emphysema as increased residual volume. Similarly, lung compliance is often increased rather than reduced in emphysema due to the loss of elastic recoil, allowing the lungs to expand more during inhalation but failing to effectively expel air. Increased oxygen saturation does not typically occur in emphysema; instead, patients often experience reduced oxygen