Assessment of a New Piezoelectric Transducer Sensor for Noninvasive Cardiorespiratory Monitoring of Newborn Infants in the NICU
Assessment of a New Piezoelectric Transducer Sensor for Noninvasive Cardiorespiratory Monitoring of Newborn Infants in the NICU
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DOI：
10.1159/000283994
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发表时间：
2010-01-01
期刊：
影响因子：
2.5
通讯作者：
Takahashi, Tsutomu
中科院分区：
文献类型：
--
作者：
Sato, Shinichi;Ishida-Nakajima, Wako;Takahashi, Tsutomu
背景资料：心电图（ECG）和阻抗呼吸描记术（IPG）是新生儿重症监护室（NICU）中最广泛使用的心肺监测技术，但用于极早产新生儿时存在导致皮肤损伤的缺点。为了防止皮肤损伤，我们设计了一种新的压电换能器（PZT）传感器。目的：评估PZT传感器在新生儿重症监护病房（NICU）心肺监护中的应用潜力。研究方法：将PZT传感器放置在新生儿下的折叠毛巾下，以检测声学心肺信号，从中计算心率（HR）和呼吸率（BR），同时进行ECG/IPG记录1-9天，进行长时间和简短（1分钟）评估。结果如下：简要评估显示，在接受检查的27名和11名新生儿中，PZT传感器检测到的瞬时HR/BR与ECG/IPG之间的平均相关系数分别为0.92 +/- 0.12和0.95 +/- 0.02。在长时间评估期间，PZT传感器的HR检测率比ECG低10（82.6 ± 12.9 vs. 91.8 ± 4.1%; p = 0.001，n = 27），尽管具有可比性（90.3 +/- 4.1 vs. 92.5 +/-3.4%，p = 0.081），与70%（18/27）接受检查的新生儿相似;在相对稳定的信号条件下，PZT传感器和IPG之间的BR检测率相当（95.9 ± 4.0 vs. 95.3 ± 3.5%; p = 0.38，n = 11）。PZT传感器既没有造成皮肤损伤，也没有增加身体运动的所有新生儿检查。结论：PZT传感器是非侵入性的，不会引起皮肤刺激，我们相信它确实为NICU提供了一种可靠、准确的心肺监测工具，尽管机械通气噪声问题仍有待解决。版权所有（C）2010 S. Karger AG，巴塞尔
Background: Electrocardiogram (ECG) and impedance pneumography (IPG), the most widely used techniques for cardiorespiratory monitoring in the neonatal intensive care unit (NICU), have the disadvantage of causing skin damage when used for very premature newborn infants. To prevent skin damage, we designed a new piezoelectric transducer (PZT) sensor. Objective: To assess the potential of the PZT sensor for cardiorespiratory monitoring in the NICU. Methods: The PZT sensor was placed under a folded towel under a neonate to detect an acoustic cardiorespiratory signal, from which heart rate (HR) and breathing rate (BR) were calculated, together with simultaneous ECG/IPG recording for 1-9 days for long and brief (1-min) assessment. Results: The brief assessment showed average correlation coefficients of 0.92 +/- 0.12 and 0.95 +/- 0.02 between instantaneous HRs/BRs detected by the PZT sensor and ECG/IPG in 27 and 11 neonates examined. During the long assessment, the HR detection rate by the PZT sensor was similar to 10% lower than that by ECG (82.6 +/- 12.9 vs. 91.8 +/- 4.1%; p = 0.001, n = 27), although comparable (90.3 +/- 4.1 vs. 92.5 +/- 3.4%, p = 0.081) in similar to 70% (18/27) of neonates examined; BR detection rate was comparable between the PZT sensor and IPG during relatively stable signal conditions (95.9 +/- 4.0 vs. 95.3 +/- 3.5%; p = 0.38, n = 11). The PZT sensor caused neither skin damage nor body movement increase in all neonates examined. Conclusion: The PZT sensor is noninvasive and does not cause skin irritation, and we believe it does provide a reliable, accurate cardiorespiratory monitoring tool for use in the NICU, although the issue of mechanical-ventilation noise remains to be solved. Copyright (C) 2010 S. Karger AG, Basel