使用呼吸电感胸透测量胸腹同步性:技术方面和克服其局限性的建议。

Expert review of respiratory medicine Pub Date : 2024-03-01 Epub Date: 2024-06-07 DOI:10.1080/17476348.2024.2363058
Javier Sayas, Cristina Lalmolda, Marta Corral, Pablo Flórez, Ana Hernández-Voth, Jean Paul Janssens, Claudio Rabec, Bruno Langevin, Frédéric Lofaso, Annalisa Carlucci, Claudia Llontop, Joao Carlos Winck, Jesús González Bermejo, Manel Lujan
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引用次数: 0

摘要

背景:胸腹不同步(TAA)通常通过呼吸电感胸透来评估。用于评估的主要参数是根据利萨如(Lissajous)图计算相位角。然而,该方法的使用存在一些数学限制:研究设计和方法:从 a) 正常人、b) COPD 患者(包括静息和运动时)和 c) 阻塞性呼吸暂停综合征患者中选取五次呼吸序列。自动分析计算相位角、环路旋转(顺时针或逆时针)、整体相位延迟和环路面积。结果:分析了 2290 个循环(55% 顺时针旋转)。相位角范围为 -86.90 至 + 88.4 度,而全局相位延迟范围为 -179.75 至 + 178.54。尽管相位角与全局相位延迟有很好的相关性(p 结论),但相位角与全局相位延迟的相关性并不高:全局相位延迟的单一值涵盖了 TAA 的所有情况。它可能是诊断和跟踪导致 TAA 的临床症状的相关参数:临床试验注册:该试验已在 ClinicalTrials.gov 注册(标识符:NCT04597606)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Measurement of thoraco-abdominal synchrony using respiratory inductance plethysmography: technical aspects and a proposal to overcome its limitations.

Background: Thoraco-abdominal asynchrony (TAA) is usually assessed by respiratory inductance plethysmography. The main parameter used for its assessment is the calculation of the phase angle based on Lissajous plots. However, there are some mathematical limitations to its use.

Research design and methods: Sequences of five breaths were selected from a) normal subjects, b) COPD patients, both at rest and during exercise, and c) patients with obstructive apnea syndrome. Automated analysis was performed calculating phase angle, loop rotation (clockwise or counterclockwise), global phase delay and loop area. TAA severity was estimated quantitatively and in subgroups.

Results: 2290 cycles were analyzed (55% clockwise rotation). Phase angle ranged from -86.90 to + 88.4 degrees, while global phase delay ranged from -179.75 to + 178.54. Despite a good correlation with global phase delay (p < 0.01, ANOVA test), phase angle and loop area were not able to correctly classify breaths with severe deviation and paradoxical movements (p=ns, Bonferroni post hoc test).

Conclusions: Global phase delay covers the whole spectrum of TAA situations in a single value. It may be a relevant parameter for diagnosis and follow-up of clinical conditions leading to TAA.

Clinical trial registration: The trial from which the traces were obtained was registered at ClinicalTrials.gov ;(identifier: NCT04597606).

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