Values

In order to understand which findings the physician obtains through a lung function test, one should look at the values determined. Respiratory volume (AZV): The amount of air the patient moves during normal, calm breathing (approx. 0.5 l).

Inspiratory capacity (IC): The maximum volume of air the patient can breathe in after exhaling normally (approx. 3.5 l). Inspiratory Reserve Volume (IRV): The volume of air that a person can breathe in a little extra after a normal inhalation breath.

This is the so-called “inspiratory reserve” (approx. 3 l). Expiratory Reserve Volume (ERV): Even after a normal exhalation, with a little tension one can still exhale some additional air (approx.

1.7 l). Vital capacity (VC): The amount of air that can be exhaled again with maximum effort after a maximum inhalation (approx. 3.3-4.9 l, depending on size etc.).

One-second capacity (FEV1, Tiffeneau test): The volume of air that can be exhaled again within one second after maximum inhalation (at least 70% of vital capacity).

Respiratory volume (AZV): The amount of air the patient moves during normal, calm breathing (approx. 0.5 l).
Inspiratory capacity (IC): The maximum volume of air that the patient can inhale after exhaling normally (approx.
3.5 l).
Inspiratory Reserve Volume (IRV): After a normal inhalation draw, every person can breathe in some extra air. This is the so-called “inspiratory reserve” (approx. 3 l).
Expiratory Reserve Volume (ERV): Even after normal exhalation, additional air can be exhaled with some tension (approx.
1.7 l).
Vital capacity (VC): The amount of air that can be exhaled with maximum effort after a maximum inhalation (depending on size etc. approx. 3.3-4.9 l).
One-second capacity (FEV1, Tiffeneau test): The volume of air that can be exhaled again within one second after maximum inhalation (at least 70% of vital capacity)
Peak Flow (PEF): Here you measure the strongest airflow leaving the lungs during rapid exhalation (max. 600 l/min).