Field Internship Student Data Acquisition Project. (FISDAP) Airway Practice Exam

How does breathing regulation differ in individuals with COPD?

1. They have a decreased respiratory rate

2. They have difficulty removing CO2

3. They experience increased lung volume

4. They breathe automatically without thinking

The correct answer is: They have difficulty removing CO2

Individuals with Chronic Obstructive Pulmonary Disease (COPD) experience significant difficulty in removing carbon dioxide (CO2) from their lungs. This is primarily due to the airflow limitation and the destruction of lung tissue associated with the disease, which impairs gas exchange. The obstacles create a situation where CO2 accumulates in the bloodstream, leading to respiratory acidosis. In the context of breathing regulation, this accumulation of CO2 affects the way the body signals the need to breathe. Normally, an increase in CO2 levels would stimulate the respiratory center in the brain to initiate breathing changes, but in COPD patients, this response may not function effectively. Consequently, patients may rely more on low oxygen levels to trigger their breathing instead of responding adequately to elevated CO2 levels, which can lead to periods of hypoventilation or shallow breathing. While it may seem that they could have a decreased respiratory rate or increased lung volume, these characteristics are not standard in COPD. Patients may also struggle with the automaticity of their breathing due to the demanding nature of their condition. Thus, the difficulty in removing CO2 distinctly illustrates the challenges COPD patients face in maintaining proper gas exchange and regulation of their breathing patterns.