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ORIGINAL RESEARCH article

Front. Physiol.
Sec. Respiratory Physiology and Pathophysiology
Volume 15 - 2024 | doi: 10.3389/fphys.2024.1464377
This article is part of the Research Topic Multidimensional Physiology: Novel Techniques and Discoveries with Bioimpedance Measurements, Volume II View all articles

Evaluating the impact of electrode plane on regional lung function assessment

Provisionally accepted
Ling Sang Ling Sang 1*Yutao Sun Yutao Sun 2Yu Lu Yu Lu 3Zhimin Lin Zhimin Lin 2
  • 1 Guangzhou Institute of Respiratory Health, Guangzhou, China
  • 2 State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, Department of Critical Care Medicine,, Guangzhou, China
  • 3 Guangzhou Laboratory, Guangzhou, China

The final, formatted version of the article will be published soon.

    Objective: The aim of the study was to explore the influence of measurement plane on regional lung function assessed with electrical impedance tomography (EIT).Methods: Forced vital capacity (FVC) maneuver was performed in 30 lung healthy male volunteers prospectively. Simultaneously, EIT measurements were conducted at the 3 th , the 4 th and the 5 th intercostal spaces (ICS), respectively. The EIT-based spirometry parameters are calculated in a similar manner to their original definitions. Spatial and temporal distribution of the corresponding functional images were assessed and compared among the measurement planes.Results: All subjects but one were able to perform FVC maneuver according to the guidelines. Significant differences were found in 67% (6 out of 9) of the EIT-based parameters assessing the spatial and temporal distribution. The fEIT images were most homogeneous at ICS 4 compared to other two measurement planes, except for the time required for 75% of FVC. The fEIT image FVCEIT distributed towards dorsal regions when the measurement planes moved from ICS 3 to ICS 5, whereas the identified lung areas became smaller.The spatial and temporal distribution of regional lung function measured with EIT was influenced by the measurement planes. We recommend adhering to the same measurement plane for before-after comparison. ICS 4 was recommended for the sitting subjects performing lung function testing.

    Keywords: Electrical impedance tomograghy, electrode plane, Regional lung function, Forced vital capacity (FVC), spatial and temporal distribution

    Received: 14 Jul 2024; Accepted: 17 Sep 2024.

    Copyright: © 2024 Sang, Sun, Lu and Lin. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Ling Sang, Guangzhou Institute of Respiratory Health, Guangzhou, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.