Nova Didacta Nova Didacta
Nova Didacta • Produtos

Produtos Ensino CientíficoFisiologia Humana

Inserir no projetoP8001360Sistema de treinamento em o diagnóstico de doenças pulmonares (FEV) com Cobra4


The forced expiratory volume (FEV) in one second is used in the diagnosis of lung illnesses. For the measurement of this here, the student carrying out the test breathes normally a few times, presses out all the air he or she can, takes a deep breath and holds it for a moment before (at the beginning of measurement) force breathing out as much air as he or she can right from the start of measurement.

Further to this, the vital capacity (as inspiratory VC = IVC) is again to be determined here as it is required for the FEV1 and IVC quotient which is called the Tiffeneau value:

Tiffeneau value = FEV1 / IVC [%] (1)

With healthy young people, this quotient is 75%. In the case of a so-called obstructive respiratory illness, such as bronchial asthma, the value is far below 75%, as the forced expiratory volume per second is greatly reduced. As this FEV value, just as the vital capacity, depends on the age of the person, among others, older people only reach a value of about 70%.

In contrast to the obstructive illnesses, there are also so-called restrictive respiratory illnesses which cannot be determined using this method.


1. Determine the inspiratory vital capacity (IVC) in litres.
2. Determine the one-second forced expiratory volume in one second (FEV1) in litres.

What you can learn about

• Lung illness
• Forced expiratory volume (FEV)
• Vital capacity
• Tiffeneau value
• Obstructive respiratory illness
• Restrictive respiratory illnesses

Palavras-Chave: Sistemas de Treinamento | Sistemas Didáticos | Sistemas Educacionais | Kits Didáticos | Laboratório de Ensino | Kits Educacionais | Conjunto de Treinamento | Conjuntos Didáticos | Sistemas de Ensino | Equipamentos Didáticos | Equipamentos de Ensino | Laboratório Didático