Vitalograph Cardboard Mouthpieces - Box of 200

Single-use disposable cardboard mouthpieces are no longer recommended for spirometry testing
Use a BVF or SafeTway mouthpiece
Mini (22mm diameter) mouthpieces and
Long (50% longer) mouthpieces are available
A special outer coating prevents lip sticking and consequent bleeding

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What Does Spirometery Measure

Forced vital capacity (FVC) of the lung is the volume of air that can be forcibly expelled from the lung from the maximum inspiration to the maximum expiration.
Forced expiratory volume in 1 second (FEV1) is the volume of air that can be expelled from maximum inspiration in the first second.
FEV1/FVC ration is the FEV1 expressed as a percentage of the FVC (or VC if that is greater) ie the proportion of the vital capacity inhaled in the first second. It distinguishes between reduced FEV1 due to restricted lung volume and that due to obstruction. Obstruction is defined as an FEV1/FVC ratio of <70%
Vital Capacity (VC): Is the change in volume of gas in the lungs from complete inspiration to complete expiration.
Peak Expiratory Flow Rate (PEFR): Is the greatest flow that can be sustained for 10 milliseconds on forced expiration starting from full inflation of the lungs. It is measured in Litres per minute with a peak flow meter.
Forced Expiratory Flow Rate (FEFR 25% - 75%): This is the average forced expiratory flow rate at the middle part of the FVC manoeuvre. Expressed in Litres per second it gives an indication of what is happening in the lower airways. It is a more sensitive parameter and not as reproducible as the others. It is a useful serial measurement because it will be affected before FEV, so can act as an early warning sign of disease
Expiratory Vital Capacity (EVC): The maximum volume of gas which can be expired from the lungs during a relaxed expiration from a position of full inspiration.
Inspiratory Vital Capacity (IVC): The maximum volume of gas which can be inspired into the lungs during a relaxed inspiration from a position of full expiration. The expiratory phase is the one more commonly used to measure obstruction and restriction within the lungs.

IVC can be obtained in two ways -

1. Static test - performed without regard to time e.g. Vital Capacity (VC)
2. Dynamic test - performed at forcible and maximum effort against time. e.g. FEV, (Forced expiratory volume in the first second from a maximum inspiration)