Nasal Cannula – Adult, Paediatric or Neonate

Description

Nasal Cannula with Tubing

Nasal Cannula are used for their simplicity and patient convenience. There is entrainment of ambient air through the nostrils. The FiO2 achieved is proportional to a) the flow rate of oxygen (1-6 l/mni), b) the patient’s tidal volume, inspiratory flow rate, and c) the volume of the nasal pharynx.

At an oxygen flow rate of 2 l/min the oxygen concentration in the hypopharynx of a resting person is 25% – 30%. Nasal Cannulas prevent Re-breathing and are comfortable for long periods.

There is increased patient compliance with nasal cannulas as patients are able to speak, eat or drink. Local irritation and dermatitis may occur with high flow rates. Use of humidified oxygen is recommended to reduce dryness of the mucosal wall in the nasal cavities, particularly when using flows of greater than 4 l/min.

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