Technologies for Respiration Laboratory-TechRes LabDepartment of Electronic, Information and Bioengineering (DEIB)Politecnico di Milano University 20133 Milan Italy.
NICUFondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico 20122 Milan Italy.
IEEE J Transl Eng Health Med. 2022 Mar 21;10:4900708. doi: 10.1109/JTEHM.2022.3159997. eCollection 2022.
Monitoring infants' breathing activity is crucial in research and clinical applications but remains a challenge. This study aims to develop a contactless method to monitor breathing patterns and thoracoabdominal asynchronies in infants inside the incubator, using depth cameras.
We proposed an algorithm to extract the 3D displacements of the ribcage and abdomen from the analysis of depth images. We evaluated the accuracy of the system vs. a reference motion capture analyzer. We also conducted a feasibility study on 12 patients receiving non-invasive respiratory support to estimate the mean and the variability of the chest wall displacements in preterm infants and evaluate the suitability of the proposed system in the clinical setting.
, the mean (95% CI) error in the measurement of amplitude, frequency and phase shift between compartmental displacements was -0.14 (-0.57, 0.28) mm, 0.02 (-0.99, 1.03) bpm, and -0.40 (-1.76, 0.95)°, respectively. , the mean (95% CI) amplitude of the ribcage and abdomen displacements were 0.99 (0.34, 2.67) mm and 1.20 (0.40, 2.15) mm, respectively.
The developed system proved accurate and was suitable for the clinical environment.
The proposed method has value for evaluating infants' breathing patterns in research applications and, after further development, may represent a simple monitoring tool for infants' respiratory activity inside the incubator.
监测婴儿的呼吸活动在研究和临床应用中至关重要，但仍然具有挑战性。本研究旨在开发一种使用深度摄像机的非接触式方法，监测孵化器内婴儿的呼吸模式和胸腹不同步。
我们提出了一种从深度图像分析中提取肋骨和腹部 3D 位移的算法。我们评估了系统与参考运动捕捉分析仪的准确性。我们还对 12 名接受无创呼吸支持的患者进行了可行性研究，以估计早产儿的胸壁位移的平均值和可变性，并评估拟议系统在临床环境中的适用性。
在测量幅度、频率和隔室位移之间的相位差方面，平均（95%CI）误差分别为-0.14（-0.57，0.28）mm、0.02（-0.99，1.03）bpm 和-0.40（-1.76，0.95）°。在呼吸周期中，肋骨和腹部位移的平均（95%CI）幅度分别为 0.99（0.34，2.67）mm 和 1.20（0.40，2.15）mm。
所开发的系统被证明是准确的，适合临床环境。
所提出的方法对于评估婴儿的呼吸模式在研究应用中具有价值，并且在进一步开发后，可能代表一种简单的监测工具，用于监测孵化器内婴儿的呼吸活动。
