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DOI: 10.24075/brsmu.2024.051
Copyright: © 2024 by the authors. Licensee: Pirogov University.
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (CC BY).

ORIGINAL RESEARCH

Analysis of the possibilities of the flow-volume curve assessment by the changes in its shape in patients with obstructive airway diseases

Desyatskova EM, Grechenko VV, Soboleva VV
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Pirogov Russian National Research Medical University, Moscow, Russia

Correspondence should be addressed: Elena M. Desyatskova
Ostrovityanova, 1, Moscow, 117997, Russia; moc.liamg@tasedaneleinap

About paper

Acknowledgements: the authors thank Tatiana D. Bolshakova for the help in translating this paper.

Received: 2024-10-08 Accepted: 2024-11-10 Published online: 2024-11-27
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Fig. 1. Calculating angle β (using FEF50 angle as example).
Fig. 2. Determining the degree of deviation of actual FEF values from the predicted values (using a difference of over 200 ml between FVC and VC as example).
Table 1. Cut-off points for AEX-FV evaluation, calculated for the age ranges in question
Note: mean area ratios are presented as (mean value ± standard deviation), cut-off point values are rounded to the next integer.
Table 2. Cut-off points for angle β, calculated for the considered age ranges
Note: mean angle values are presented as (mean value ± standard deviation), cut-off point values are rounded to the next integer.
Table 3. Cut-off points for maximum flow rate at the given FVC percentages calculated for the considered age ranges.
Note: cut-off point values are presented as Me [Q1; Q3].
Table 4. Results of the diagnostic efficiency evaluation of the methods of estimating the flow-volume curve by shape change in the considered age ranges
Note: GS — gold standard, RE — reference equations, S — diagnostic sensitivity, Sp — diagnostic specificity.