Simple face mask

The simple face mask (SFM) is a basic disposable mask, made of clear plastic, to provide oxygen therapy for patients who are experiencing conditions such as chest pain (possible heart attacks), dizziness, and minor hemorrhages.

The simple face mask can deliver higher flow rates than nasal cannula (6–10 liters per minute) for an FiO2 of 30- 60% oxygen.

This feature eliminates the danger of suffocation present if a mask with one-way valves becomes disconnected from oxygen.

A venturi device attached to the mask can be used to control to some degree the concentration of oxygen delivered; usually this is used to prevent hypoxia in emphysema patients who have lost the ability to fully inhale.

The effectiveness of the therapy can be continuously monitored using a pulse oximeter, though more clinically useful data can be obtained by drawing arterial blood gas.