Which of the following would cause an increase in EtCO₂?

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: A

Rationale: The purpose of a tracheostomy is primarily to remove an obstruction in the upper airway, typically the larynx or pharynx, in order to maintain a patient's airway and facilitate breathing. By creating a direct airway through the neck into the trachea, a tracheostomy helps improve the flow of air into the lungs, especially in situations where the upper airway is compromised due to an injury, infection, or other medical conditions. This procedure is crucial for patients who are unable to breathe effectively through their nose and mouth, providing a more stable and secure air passage for oxygen delivery. While a tracheostomy may also influence other aspects like comfort and swallowing in some cases, the primary and immediate purpose is to ensure adequate breathing.

Correct Answer: A

Rationale: Restlessness is considered the earliest sign of hypoxia. When the body is not receiving enough oxygen, the brain sends signals to increase the respiratory rate in an attempt to compensate for the lack of oxygen. This increase in respiratory effort can lead to restlessness as the body tries to improve oxygenation levels. Therefore, restlessness is often one of the first signs that a person may be experiencing hypoxia. It is important to recognize this early sign and initiate appropriate interventions to prevent further deterioration in oxygen levels.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.