NURS 6501: MIDTERM EXAM:
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A patient with a history of chronic obstructive pulmonary disease (COPD) presents to the emergency department with increased shortness of breath and cyanosis. Arterial blood gas analysis reveals low oxygen levels. This patient's cells are at risk of injury due to which of the following mechanisms?
Group of answer choices
- Physical injury
- Infection
- Hypoxia
- Immune response
- COPD is characterized by chronic airflow obstruction, which impairs the lungs' ability to efficiently exchange gases like oxygen and carbon dioxide.
- In COPD, hypoxia occurs because the impaired lungs cannot adequately oxygenate the blood, leading to low oxygen levels in the tissues.
- Low oxygen levels can lead to cellular injury through several mechanisms, such as metabolic dysfunction, anaerobic metabolism, and increased oxidative stress, which can damage cells and tissues.
- Physical injury: While physical injury can damage cells, there is no indication of trauma or mechanical injury in this patient's presentation. The primary issue here is oxygen deprivation.
- Infection: Although infections can exacerbate COPD and lead to increased symptoms, this patient's primary issue as suggested by the symptoms (increased shortness of breath, cyanosis, low oxygen levels) is more related to hypoxia rather than an infection.
- Immune response: While the immune system plays a role in the inflammation seen in COPD, the acute symptoms in this patient are more likely to be due to hypoxia rather than an immune response alone.