Adequate oxygen level may require extra compensation and often this will be prescribed by the physician. Therefore the additional Oxygen is fed in through a tube entering the nasal chambers from the concentrator device operating on the AC mains with low noise generation levels.
The usual practice is to allow an extra gas bottle for safety reasons, usually 10 or 5 L size (though smaller 1 or 2 L bottles are also available).
A regultionvalve can result in a significant reduction of the oxygen utilization, helping the economics.
An electrical exhaust can regularly clear the bronchial channels to relieve the patient, but also ensure the optimum utilization of the oxygen supply.