FIELD: medicine.
SUBSTANCE: invention can be applied for the diagnostics of a restrictive type of ventilation impairment in patients with the normal vital lung capacity (VLC). For this purpose spirometry is realised and a volume of a forced output is determined. Additionally determined is a forced exhalation volume when the peak volume speed is achieved (FEVpvs). When the ratio LCL/FEVpvs <8.3, a restrictive type of ventilation impairment is diagnosed.
EFFECT: method makes it possible to efficiency diagnose restrictive impairment in patients with the normal vital lung capacity.
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