For patients with low blood oxygen saturation, what is the appropriate initial step to take?

The appropriate initial step for patients presenting with low blood oxygen saturation is to provide supplemental oxygen. This action is critical because low oxygen saturation indicates that the body is not receiving enough oxygen, which can lead to hypoxia and compromise vital organ function. Administering supplemental oxygen helps to quickly increase the levels of oxygen in the bloodstream, improving the patient's overall oxygenation and potentially stabilizing their condition.

Providing supplemental oxygen can be done through various means such as nasal cannulas or non-rebreather masks, depending on the severity of the hypoxia and the patient's needs. This intervention is essential in emergency situations to ensure that the patient receives adequate oxygen, thereby preventing further complications.

While nebulizers can be useful in administering medication for certain respiratory conditions, they do not directly address low blood oxygen levels. Performing chest compressions is only indicated in cases of cardiac arrest or severe respiratory failure, making it inappropriate as an initial step for low oxygen saturation. Checking blood pressure is important for assessing circulation but does not address the immediate concern of oxygen levels in the blood. Thus, the priority should be to ensure adequate oxygenation through supplemental oxygen.