What oxygen therapy is indicated for patients with O2 saturation less than 95%?

Administering oxygen via nasal cannula at 2 liters per minute serves as a suitable initial intervention for patients with oxygen saturation levels below 95%. This approach allows for a controlled and gentle increase in oxygen delivery, as nasal cannulas are comfortable for the patient and effective in enhancing oxygen saturation without overly stressing the respiratory system.

Initiating treatment at a lower flow rate offers the flexibility to adjust oxygen therapy based on the patient’s response. If the patient's oxygen saturation does not improve or if they exhibit signs of distress, healthcare providers can increase the flow rate or transition to a higher concentration of oxygen via a mask. This stepwise approach aligns with treatment protocols that prioritize patient comfort and safety while ensuring adequate oxygenation.

In comparison, administering oxygen via a mask may be necessary for patients with significantly lower saturations or when higher concentrations are needed, but it may not always be the most comfortable starting option. Providing supplemental oxygen only when symptoms worsen does not address the immediate need for oxygenation and could lead to the progression of hypoxia. Meanwhile, nebulized oxygen therapy is not standard for improving oxygen saturation; it is typically used for administering medications for respiratory conditions rather than serving as an oxygen delivery method.