Which of the following conditions would NOT indicate the use of a non-rebreather mask?

The condition that would NOT indicate the use of a non-rebreather mask is stable angina. A non-rebreather mask is designed to deliver high concentrations of oxygen to patients who are experiencing severe respiratory distress or conditions that cause significant hypoxia, such as severe trauma, respiratory distress, or an asthma attack.

In the case of stable angina, the patient typically does not present with immediate respiratory distress or significant oxygenation issues that necessitate the expedited delivery of high-flow oxygen. Stable angina is characterized by predictable chest pain or discomfort during exertion, which usually resolves with rest or nitroglycerin. The primary management of stable angina focuses on alleviating symptoms and improving cardiac function, rather than addressing acute respiratory needs.

Using a non-rebreather mask in cases of stable angina is generally unnecessary and may not be appropriate since the patient's oxygen saturation is usually maintained, and their primary concern is related to cardiac ischemia rather than respiratory failure.