When administering oxygen to a patient with chest pain, which of the following should be a guide to its use and maintenance?

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Pulse oximetry reading is the best guide to the use and maintenance of oxygen in a patient with chest pain as it measures the oxygen saturation level in the blood. This helps in determining if the administration of oxygen is improving the oxygenation or if there is a need for adjustment. Patient rating of pain, respiratory rate, and heart rate are important vital signs to monitor, but they do not specifically guide the use and maintenance of oxygen.

When Administering Oxygen to a Patient with Chest Pain, Which