Document: Lung test gas CO (C2H2, CH4) AGA 0,3% medicinal gas, compressed ENG SmPC change

• Lung test gas CO (C2H2, CH4) AGA medicinal gas, compressed SmPC
• Lung test gas CO (C2H2, CH4) AGA 0,3% medicinal gas, compressed ENG SmPC

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SUMMARY OF PRODUCT CHARACTERISTICS

Lung test gas, CO/C₂H₂/CH₄AGA 0.3%, 0.3%, 0.3% medicinal gas, compressed

Carbon monoxide (CO) 0.3% under 150 bar pressure (15°C)

Acetylene (C₂H₂) 0.3% under 150 bar pressure (15°C)

Methane (CH₄) 0.3% under 150 bar pressure (15°C)

For a full list of excipient, see section 6.1

Medicinal gas, compressed.

Colourless, odourless and tasteless gas

This medicinal product is for diagnostic use only.For diagnostic testing of pulmonary function (determination of the diffusion capacity/transfer factor as main parameter and estimation of lung volume and pulmonary blood flow as additional parameters).
Lung test gas, CO/C₂H₂/CH₄AGA may be used in patients capable of following the instructions needed to perform the test, irrespective of age.

Only for inhalation in conjunction with diagnostic testing of pulmonary function. The gas must be used in accordance with measuring equipment instructions. Measurements must only be carried out by medical personnel competent and trained to perform pulmonary function tests.

None documented.

The risk of increasing the carboxyhaemoglobin level should be considered during repeated inhalations within a brief period (minutes). If the gas is inhaled continuously or repeatedly at short intervals over an extended period of time, the carboxyhaemoglobin level may rise and should be checked by means of a blood gas determination.

None known.

Pregnancy

Data regarding the treatment of pregnant women is not available. Available experimental data is not conclusive. The potential risk for humans is unknown. Lung test gas CO/C₂H₂/CH₄AGA should only be used during pregnancy when it is absolutely necessary.

Breast-feeding

Lung test gas CO/C₂H₂/CH₄AGA may be used during the breast-feeding period, but should not be used during breast-feeding itself.

Fertility

The potential effect of clinical doses of Lung test gas, CO/C₂H₂/CH₄AGA(associated with diagnostic testing of pulmonary function)on fertility in patients, is unknown. No data are available.

Not applicable.

None known.

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the national reporting system listed in Appendix V.

On suspected overdose, the patient must immediately be given oxygen via mask. A blood test (blood gas) to determine the carboxyhaemoglobin level must be taken immediately. If signs of hypoxia, vascular spasm, impaired consciousness or other diffuse neurobehavioralsymptoms occur, the patient must undergo acute medical assessment without delay.

Pharmacotherapeutic group: Diagnostic preparations.

ATC code: V04CX

No biological effects should be expected. Brief exposure in combination with the concentration of carbon monoxide, acetylene and methane used is unlikely to cause any biological effects.

Diffusion of carbon monoxide from the lung to capillary blood depends on the partial gas pressure in the alveolus. Uptake of carbon monoxide takes place only in pulmonary segments with alveolar ventilation and perfusion. The uptake is also dependent on the alveolocapillary parenchyma. The uptake is impaired by illness, inflammatory processes and/or fibrosis. In the blood, carbon monoxide binds to haemoglobin to form carboxyhaemoglobin.

The uptake of carbon monoxide is governed by the partial pressure in the lung, ventilation-perfusion conditions, and by alveolocapillary permeability. Especially in parenchymatous lung changes, the carbon monoxide diffusion capacity decreases and uptake is diminished.

Acetylene is rapidly taken up by the blood. The elimination from the inspired gas is used for estimation of lung blood flow. The acetylene is distributed in the body and subsequently eliminated by exhalation.

Methane is not taken up in the body but diluted in the total lung gas volume and thus used as a marker for the lung capacity. There is no human kinetics associated to the administration of trace concentration in conjunction with lung function testing, single or repeated breath techniques, lung volume estimate.

No preclinical data of relevance to the safety assessment are available except as referenced above in the Summary of Product Characteristics.

Oxygen 20.9% (oxygen, chemical formula O₂)

Nitrogen q.s. (nitrogen, chemical formula N₂)

Not applicable.

3 years.

No specific storage instructions are required for this medicinal product with respect to temperature, except as applicable to gas containers and gas under pressure (see below).

Store the cylinders in a locked area reserved for medical gases.

Storage instructions relating to gas containers and gases under pressure

Must not be exposed to strong heat. If at risk of fire – move to a safe place.

Handle carefully.Must be returned with 5 bar overpressure.

Cylinders must be stored and transported with valves closed and, with the protective cap in place.

The shoulder of the gas cylinder carries light green markings (inert gas). The body of the gas cylinder is white (medical gas).

Packages (including materials) and valves:

10 litre aluminium cylinder with shut-off valve containing approx. 1500 litre of gas.

20 litre aluminium cylinder with shut-off valve containing approx. 3000 litre of gas.

6.6 Special precautions for disposal and other handling

General

Medical gases may only be used for medicinal purposes.

Cylinders containing different types and qualities of gases should be kept segregated. Full and empty cylinders should be stored separately.

Never use oil or grease, even if the cylinder valve sticks or if the regulator is difficult to connect. Handle valves and devices belonging to them with clean and grease-free (hand-cream, etc.) hands.

Cylinders should be stored under cover, protected against weather and wind, kept dry and clean, free from inflammable material and not subjected to strong heat.

Use only standard devices that are designed for medicinal use.

Check that the cylinders are sealed before they are taken into use.

Preparation for use

Remove the seal from the valve before use.

Use only regulators designed for medicinal purposes. Check that the regulator is clean and that the gasketsare in good condition.

Open the cylinder valve gently and pressurize the regulator, close the valve. Depressurise the regulator. Repeat 3 times.

Check for leakage according to instructions that accompany the regulator. Do not attempt to remedy leakage from the valve or device in any way other than by changing the pack or O-ring.

In the event of leakage, close the valve and uncouple the regulator. Label defective cylinders, put them aside, and return them to the supplier.

Using the gas cylinder

Smoking and naked flames are absolutely forbidden in areas when gastherapy is given.

Close down the equipment in the event of fire or if it is not being used.

Carry to safety in the event of fire.

When the cylinder is in use, it should be secured in an appropriate support.

Precautions should be taken to prevent blows or falls during storage and transport.

The product must not be used at a pressure under 5 bar.This residual pressure protects the cylinder from contamination.

After use, the cylinder valve should be closed with normal force. Depressurise the regulator or connection.

[To be completed nationally]

[To be completed nationally]

[To be completed nationally]

2009-08-21/ 2014-08-21

[To be completed nationally]

2014-12-19