Kim Jong Deok, Lee Won Hyuk, Lee Yonggu, Lee Hyun Ju, Cha Teahyen, Kim Seung Hyun, Song Ki-Min, Lim Young-Hyo, Cho Seok Hyun, Cho Sung Ho, Park Hyun-Kyung
Department of Pediatrics, Hanyang University College of Medicine, Seoul, Republic of Korea.
Department of Electronics and Computer Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
R Soc Open Sci. 2019 Jun 5;6(6):190149. doi: 10.1098/rsos.190149. eCollection 2019 Jun.
Vital sign monitoring in neonates requires adhesive electrodes, which often damage fragile newborn skin. Because impulse radio ultrawideband (IR-UWB) radar has been reported to recognize chest movement without contact in adult humans, IR-UWB may be used to measure respiratory rates (RRs) in a non-contact fashion. We investigated the feasibility of radar sensors for respiration monitoring in neonates without any respiratory support to compare the accuracy and reliability of radar measurements with those of conventional impedance pneumography measurements. In the neonatal intensive care unit, RRs were measured using radar (RR) and impedance pneumography (RR) simultaneously. The neonatal voluntary movements were measured using the radar sensor and categorized into three levels (low [M], intermediate [M] and high [M]). RR highly agreed with RR ( = 0.90; intraclass correlation coefficient [ICC] = 0.846 [0.835-0.856]). For the M movement, there was good agreement between RR and RR (ICC = 0.893; mean bias -0.15 [limits of agreement (LOA) -9.6 to 10.0]). However, the agreement was slightly lower for the M (ICC = 0.833; mean bias = 0.95 [LOA -11.4 to 13.3]) and M (ICC = 0.749; mean bias = 3.04 [LOA -9.30 to 15.4]) movements than for the M movement. In conclusion, IR-UWB radar can provide accurate and reliable estimates of RR in neonates in a non-contact fashion. The performance of radar measurements could be affected by neonate movement.
新生儿生命体征监测需要使用粘性电极，这常常会损伤新生儿娇嫩的皮肤。由于脉冲无线电超宽带（IR-UWB）雷达已被报道可在不接触的情况下识别成人的胸部运动，因此IR-UWB可用于以非接触方式测量呼吸频率（RRs）。我们研究了雷达传感器在无任何呼吸支持的情况下监测新生儿呼吸的可行性，以比较雷达测量与传统阻抗式呼吸描记法测量的准确性和可靠性。在新生儿重症监护病房，同时使用雷达（RR）和阻抗式呼吸描记法（RR）测量RRs。使用雷达传感器测量新生儿的自主运动，并将其分为三个级别（低[M]、中[M]和高[M]）。RR与RR高度一致（=0.90；组内相关系数[ICC]=0.846[0.835-0.856]）。对于M级运动，RR与RR之间具有良好的一致性（ICC=0.893；平均偏差-0.15[一致性界限（LOA）-9.6至10.0]）。然而，对于M级（ICC=0.833；平均偏差=0.95[LOA-11.4至13.3]）和M级（ICC=0.749；平均偏差=3.04[LOA-9.30至15.4]）运动，一致性略低于M级运动。总之，IR-UWB雷达可以以非接触方式提供准确可靠的新生儿RR估计值。雷达测量的性能可能会受到新生儿运动的影响。
