Certified Ambulatory Perianesthesia Nurse (CAPA) Practice Exam

What is the primary concern of hypoxemia in the context of anesthetic blockage?

1. Metabolic acidosis

2. Respiratory muscle compromise

3. Cardiovascular instability

4. Neural damage

The correct answer is: Respiratory muscle compromise

In the context of anesthetic blockage, the primary concern of hypoxemia is respiratory muscle compromise. When there is a deficit of oxygen in the blood (hypoxemia), the body's ability to adequately ventilate and oxygenate tissues is severely impaired. Anesthetic agents can depress the central nervous system and lead to respiratory muscle weakness or even paralysis, making it difficult for patients to breathe independently. This is particularly critical in patients who have received certain types of regional anesthesia, such as spinal or epidural blocks, where there is a potential impact on the muscles involved in respiration. Ensuring proper ventilation is paramount, as inadequate oxygen levels can quickly lead to organ dysfunction and other severe complications. While other factors, such as metabolic acidosis, cardiovascular instability, and neural damage can also be important in the overall context of anesthesia and its complications, the immediate threat posed by hypoxemia is most closely linked to the ability to maintain effective respiratory function. Thus, recognizing and addressing respiratory muscle compromise arising from hypoxemia is essential in the management of patients undergoing anesthesia.