학술논문
On the relation between tidal and forced spirometry.
Document Type
Academic Journal
Author
Hebbink RHJ; Engineering Fluid Dynamics, University of Twente, PO Box 217, 7500 AE Enschede, the Netherlands. Electronic address: r.h.j.hebbink@utwente.nl.; Elshof J; Department of Pulmonary Diseases/Home Mechanical Ventilation, University of Groningen, University Medical Center, Groningen, the Netherlands; Groningen Research Institute for Asthma and COPD, University of Groningen, the Netherlands.; Wijkstra PJ; Department of Pulmonary Diseases/Home Mechanical Ventilation, University of Groningen, University Medical Center, Groningen, the Netherlands; Groningen Research Institute for Asthma and COPD, University of Groningen, the Netherlands.; Duiverman ML; Department of Pulmonary Diseases/Home Mechanical Ventilation, University of Groningen, University Medical Center, Groningen, the Netherlands; Groningen Research Institute for Asthma and COPD, University of Groningen, the Netherlands.; Hagmeijer R; Engineering Fluid Dynamics, University of Twente, PO Box 217, 7500 AE Enschede, the Netherlands.
Source
Publisher: Butterworth-Heinemann Country of Publication: England NLM ID: 9422753 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-4030 (Electronic) Linking ISSN: 13504533 NLM ISO Abbreviation: Med Eng Phys Subsets: MEDLINE
Subject
Language
English
Abstract
Spirometry is a lung function test involving deep inhalation and forceful deep exhalation. It is widely used to obtain objective information about airflow limitation and to diagnose lung diseases. In contrast, tidal spirometry is based on normal breathing and therefore much more convenient, but it is hardly used in medical care and its relation with conventional (forced) spirometry is largely unknown. Therefore, the objective of this work is to reveal the relation between tidal and forced spirometry. Employing the strong correspondence between the forced flow-volume curves and the Tiffeneau-Pinelli (TP) index, we present a method to obtain (a) the expected tidal flow-volume curve for a given TP-index, and (b) the expected TP-index for a given tidal curve. For patients with similar values of the TP-index, the tidal curves show a larger spread than the forced curves, but their average shape varies in a characteristic way with varying index. Therefore, just as with forced curves, the TP-index provides a useful objective ranking of the average of tidal curves: upon decreasing TP-index the expiratory flow rate changes in that its peak shifts towards smaller expiratory volumes, and its post-peak part becomes dented.
Competing Interests: Declaration of Competing Interest The authors have no real or perceived conflicts of interest to declare.
(Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
Competing Interests: Declaration of Competing Interest The authors have no real or perceived conflicts of interest to declare.
(Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)