Three-Dimensional Electrical Impedance Imaging During Spontaneous Breathing Trials in Patients With Acute Hypoxic Respiratory Failure: A Pilot Study.

Q4 Medicine Critical care explorations Pub Date : 2025-01-13 eCollection Date: 2025-01-01 DOI:10.1097/CCE.0000000000001198

Nilton Barbosa da Rosa, Tzu-Jen Kao, John Brinton, Patrick J Offner, Ellen L Burnham, Jennifer L Mueller

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Abstract

The purpose of this work is to evaluate the feasibility of lung imaging using 3D electrical impedance tomography (EIT) during spontaneous breathing trials (SBTs) in patients with acute hypoxic respiratory failure. EIT is a noninvasive, nonionizing, real-time functional imaging technique, suitable for bedside monitoring in critically ill patients. EIT data were collected in 24 mechanically ventilated patients immediately preceding and during a SBT on two rows of 16 electrodes using a simultaneous multicurrent source EIT system for 3D imaging. Dynamic 3D EIT images of conductivity were computed, as well as the EIT-derived rapid shallow breathing index, regional ventilation delay, global inhomogeneity index, and time traces of tidal volumes. 3D reconstructions and derived measures demonstrated inhomogeneity in ventilation distribution within patients. We conclude that 3D EIT images can provide information regarding ventilatory heterogeneity across the lung and may be useful in guiding ventilator management.

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三维电阻抗成像在急性缺氧性呼吸衰竭患者的自主呼吸试验：一项初步研究。

本研究的目的是评估在急性缺氧性呼吸衰竭患者的自发呼吸试验（sbt）中使用3D电阻抗断层扫描（EIT）进行肺部成像的可行性。EIT是一种无创、非电离、实时功能成像技术，适用于危重病人床边监护。采用同步多电流源EIT系统进行3D成像，收集24名机械通气患者在SBT之前和期间的两排16个电极上的EIT数据。计算电导率的动态三维EIT图像，以及由EIT导出的快速浅呼吸指数、区域通风延迟、全局不均匀性指数和潮汐量的时间轨迹。三维重建和衍生测量显示患者通气分布不均匀。我们的结论是，3D EIT图像可以提供有关整个肺部通气异质性的信息，并可能对指导呼吸机管理有用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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