A 36-year-old female complains of chest pain and has an SpO2 of 93%. What should you do?

Administering oxygen via nasal cannula at 4 lpm is an appropriate response in this scenario because the patient's SpO2 level of 93% indicates that her oxygen saturation is slightly below the normal range, which is typically 95% to 100%. When managing a patient with chest pain and suboptimal oxygen saturation, it is important to provide supplemental oxygen to improve oxygen delivery to tissues.

The use of a nasal cannula at 4 liters per minute is a measured approach, allowing for some oxygen supplementation without overwhelming the patient. This method can effectively increase the oxygen saturation while allowing the patient to remain comfortable and not overly dependent on high-flow oxygen.

In contrast, while a non-rebreather mask can deliver a higher concentration of oxygen and might seem like a more aggressive option to correct hypoxia, it may not be necessary for all patients with an SpO2 of 93%, especially if they are stable and can tolerate nasal cannula oxygen. The bag-valve mask and flow-restricted oxygen device would also not be suitable for a patient who may not require immediate respiratory support, as they typically indicate a more critical situation that necessitates advanced intervention. Thus, starting with supplemental oxygen through a nasal cannula is a sound practice in this