Abstract: A portable oxygen-air blender including a gas distributor valve, a plurality of venturi valves, and an oxygen monitor. The gas distributor valve selectively routes the flow of oxygen from a compressed gas reservoir into one of several venturi valves to be blended with atmospheric air in a predetermined ratio. The blended oxygen-air mixture may be safely delivered to neonatal patients who require a specific concentration of oxygen to breathe. A monitoring system allows the user to verify concurrently that the patient is receiving the correct blend of oxygen and make adjustments to the patient's treatment.