用于监测程序化自行车运动中通气量的先进阻抗气动仪的实验验证。

IF 2.3 4区 医学 Q3 BIOPHYSICS Physiological measurement Pub Date : 2024-05-31 DOI:10.1088/1361-6579/ad4951
Xing Zhou, Qin Liu, Zixuan Bai, Shan Xue, Zhibin Kong, Yixin Ma
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引用次数: 0

摘要

目的: 在以往的研究中,阻抗气动图(IP)可对受试者的呼吸模式进行静态评估。要评估基于 IP 的非卧床呼吸监测的可行性和局限性,还需要对临床相关的运动设计进行进一步研究。本研究的目的是评估高级 IP 在非卧床呼吸监测中的能力,以及其在心肺运动测试(CPET)中对独立通气能力量化的预测价值。方法:35 名志愿者采用相同的校准方法和 CPET 运动方案(包括休息、无负荷、增量负荷、最大负荷、恢复和进一步恢复阶段)接受检查。在校准阶段的 3 或 4 次深呼吸中,同时记录胸阻抗和标准肺活量,以生成特定阶段的先期校准系数(CC)。运动方案中的 IP 测量值通过先验 CC 转换为容积估计曲线,从而计算出独立于肺活量测量方法的分钟通气量(VE)。在 Bland-Altman 图中,在所有 3 个阶段的蹬踏运动中,总的 VE 估计偏差在统计上不显著,而且在所有 CPET 阶段的每个阶段,34 名或所有受试者的 VER 和 VEff 之间的差异都在 95% 的一致限度(95% LoA)内。
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Experimental validation of an advanced impedance pneumography for monitoring ventilation volume during programmed cycling exercise.

Objective.Impedance pneumography (IP) has provided static assessments of subjects' breathing patterns in previous studies. Evaluating the feasibility and limitation of ambulatory IP based respiratory monitoring needs further investigation on clinically relevant exercise designs. The aim of this study was to evaluate the capacity of an advanced IP in ambulatory respiratory monitoring, and its predictive value in independent ventilatory capacity quantification during cardiopulmonary exercise testing (CPET).Approach.35 volunteers were examined with the same calibration methodology and CPET exercise protocol comprising phases of rest, unloaded, incremental load, maximum load, recovery and further-recovery. In 3 or 4 deep breaths of calibration stage, thoracic impedance and criterion spirometric volume were simultaneously recorded to produce phase-specific prior calibration coefficients (CCs). The IP measurement during exercise protocol was converted by prior CCs to volume estimation curve and thus calculate minute ventilation (VE) independent from the spirometry approach.Main results.Across all measurements, the relative error of IP-derived VE (VER) and flowrate-derived VE (VEf) was less than 13.8%. In Bland-Altman plots, the aggregate VE estimation bias was statistically insignificant for all 3 phases with pedaling exercise and the discrepancy between VERand VEffell within the 95% limits of agreement (95% LoA) for 34 or all subjects in each of all CPET phases.Significance.This work reinforces the independent use of IP as an accurate and robust alternative to flowmeter for applications in cycle ergometry CPET, which could significantly encourage the clinical use of IP and improve the convenience and comfort of CPET.

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来源期刊
Physiological measurement
Physiological measurement 生物-工程:生物医学
CiteScore
5.50
自引率
9.40%
发文量
124
审稿时长
3 months
期刊介绍: Physiological Measurement publishes papers about the quantitative assessment and visualization of physiological function in clinical research and practice, with an emphasis on the development of new methods of measurement and their validation. Papers are published on topics including: applied physiology in illness and health electrical bioimpedance, optical and acoustic measurement techniques advanced methods of time series and other data analysis biomedical and clinical engineering in-patient and ambulatory monitoring point-of-care technologies novel clinical measurements of cardiovascular, neurological, and musculoskeletal systems. measurements in molecular, cellular and organ physiology and electrophysiology physiological modeling and simulation novel biomedical sensors, instruments, devices and systems measurement standards and guidelines.
期刊最新文献
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