Venturi Oxygen Mask with Tubing – Adult – BOX OF 20

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Adult venturi oxygen mask kit including set of 6 venturi valves and tubing to fit our range of medical oxygen cylinders

This clear venturi oxygen mask comes complete with 1.8m tubing and 6 Venturi valves.

Venturi valves included in this oxygen mask & tubing kit include:

Green 60%

Red 40%

Yellow 35%

Orange 31%

White 28%

Blue 24%

This adult size venturi oxygen mask and tubing set is simple to attach to our range of medical oxygen cylinders (tank/bottle/canister) via the oxygen tubing which features universal rubber end fittings which simply push fit onto our oxygen cylinder regulator outlets.

We also supply this adult Venturi oxygen mask kit as a single set.

 

The British Thoracic Society guideline 'BTS Guideline for Oxygen Use in Adults in Healthcare and Emergency Settings' states:

"A Venturi mask will give an accurate concentration of oxygen to the patient regardless of oxygen flow rate (the minimum suggested flow rate is written on each Venturi device).

The oxygen concentration remains constant because of the Venturi principle.

The gas flow into the mask is diluted with air which is entrained via the cage on the Venturi adaptor.

The amount of air sucked into the cage is related to the flow of oxygen into the Venturi system.

The higher the flow the more air is sucked in.

The proportions remain the same and therefore the Venturi mask delivers the same concentration of oxygen as the flow rate is increased.

Venturi masks are available in the following concentrations: 24%, 28%, 31%, 35%, 40% and 60%.

They are suitable for all patients needing a known concentration of oxygen, but 24% and 28% Venturi masks are particularly suited to those at risk of carbon dioxide retention.

A further benefit of Venturi masks is that the flow rate of gas from the mask will usually exceed the inspiratory flow rate of the patient.

One study has shown that patients with a respiratory rate >30 breaths/min often have an inspiratory flow rate above the minimum flow rate specified on the mask packaging.

Therefore, for patients with a high respiratory rate, it is suggested that the flow rate for Venturi masks should be set above the minimum flow rate listed on the packaging (increasing the oxygen flow rate into a Venturi mask does not increase the concentration of oxygen which is delivered).

The accuracy of oxygen delivery from a Venturi mask is greatly reduced if the mask is not accurately placed on the patient’s face.

Patients with a respiratory rate >30 breaths/min often have a flow rate which is above the minimum delivered by the Venturi system as specified by the flow rate recommended for the mask.

Venturi masks deliver a constant percentage of oxygen but the effect on the patient will depend on the condition being treated and on the breathing pattern and baseline oxygen saturation of the patient.

As might be expected from the oxygen dissociation curve, patients with an oxygen saturation that is already in the normal range will have a very small rise in oxygen saturation (although the PaO2 is likely to rise substantially).

However, patients with very low oxygen saturation will have a marked rise if given even a small concentration of oxygen.

This is because the oxygen dissociation curve is actually a ‘rapid escalator’ rather than a ‘slippery slope’.

A small increase in inspired oxygen concentration can make a big difference when the saturation is below 80% but the response to oxygen is much less if the saturation is close to or above 90%."

 

Explore our cylinder pages to view our medical oxygen cylinders and Nitronox cylinders.

Please use our enquiry form to place an order or arrange a call-back to discuss your requirements.