High Flow Oxygen Delivery Devices

Oxygen use has extended from inpatient to outpatient settings for patients with chronic pulmonary diseases and complications of hypoxaemia.

High flow oxygen delivery devices. Delivery devices work with different flow rates. 2 low flow systems provide oxygen at flow rates that are lower than patients inspiratory demands. Thus when the total ventilation exceeds the capacity of the oxygen reservoir room air is entrained. The system provides a high flow of heated humidified air to the patient via the nasal cannula.

High flow oxygen delivery devices are also called as fixed performance devices because their performance is not affected by changes in patient s tidal volume and respiratory rate and therefore deliver accurate oxygen concentration high flow oxygen devices are more effective in treating hypoxemia then low flow systems. The percentage of oxygen inspired depends on the flow rate and the delivery device. Oxygen delivery systems are generally classified as low flow or variable performance devices and high flow or fixed performance devices. They include nasal cannulae.

The indications advantages and disadvantages of each device and delivery system are presented. The flow rate can be set on the wall tap. It varies from 0 15l per minute. This article presents an overview of oxygen devices oxygen concentrators compressed gas cylinders and liquid oxygen and delivery systems high and low flow.

Disadvantages of high flow oxygen devices are. Where the airvo2 is used as an oxygen delivery device the flow from this device is independent to the flow of oxygen. See also below guidelines for additional information. Flow rate 1 4l min 4l will dry the nose 2l is more comfortable.