11/13/24, 7\:25 PM Guide | Oxygen delivery devices

Oxygen delivery devices

Table of contents

Introduction

Supplementary oxygen to correct hypoxia can be delivered by a variety of oxygen delivery devices. It is important to be
familiar with di
Each oxygen delivery device will deliver a di
oxygen delivery devices used, and their correct oxygen
Oxygen is a prescription-only medicine (POM) and therefore supplementary oxygen should be prescribed on the patient's
drug chart, with a target range for oxygen saturations.

Nasal cannulae

Nasal cannulae (NC) are used for mild hypoxia, typically in non-acute situations.
Nasal cannulae deliver 24 - 30% O 2
(maximum
The NC tubing is placed around a patient's face with the prongs positioned at the nostrils. The NC tubing can be secured
behind the patient’s head or around their ears.
Issues with nasal cannulae\:
High
Do not allow close control of FiO
2
Nasal cannulae [1]
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Simple face mask (Hudson mask)

Simple face masks (also called Hudson masks) are typically used to treat mild to moderate hypoxia.
The mask delivers 30 - 40% O 2
(
The mask is positioned over the patient's nose and mouth with the elastic strap behind their head.
Issues with simple face masks\:
They do not allow close control of FiO
2
There is a risk of aspiration if the patient vomits whilst wearing the mask
Hudson mask

Non-rebreather mask (reservoir mask)

Non-rebreather masks (also called reservoir masks) are used to treat patients with a signi
to severe).
Non-rebreather masks can deliver high FiO 2
direct oxygen source.
concentrations as the oxygen is inhaled from both the reservoir bag as well as the
This mask delivers approximately 70% O 2
when used with a 15L oxygen
The mask
Ensure the reservoir bag
Issues with non-rebreather masks\:
For the mask to work e
reservoir bag, obstruct the valve with your
Reservoir masks don't have a true seal, so some entraining of the surrounding air is unavoidable. A reservoir mask is
therefore not a
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Reservoir mask

Venturi mask

Venturi masks are designed to deliver constant FiO 2
performance device).
regardless of the patient’s respiratory rate and
They are used to deliver oxygen to patients with chronic obstructive pulmonary disease (COPD) due to the risk of type 2
respiratory failure.
The Venturi mask
Details of the required
Issues with Venturi masks\:
If the
stated FiO .
2
If you increase the oxygen
2
Table 1. The FiO2 delivered by di
Flow rate required (L/min) FiO delivered
2
Blue 2-4 24%
White 4-6 28%
Yellow 8-10 35%
Red 10-12 40%
Green 12-15 60%
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Venturi masks

Humidi

Standard oxygen gases have a drying e

Humidi
to clear.
Humidi
100%.
Oxygen is passed through a humidifying device producing sterile vapour before travelling in elephant tubing to a face mask
covering the patient’s nose and mouth.
Issues with humidi
Water can pool in the oxygen tubing and obstruct the
Source\: geekymedics.com
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