Loubert Christian, Ouellette Mélissa, Zaphiratos Valérie, Tanoubi Issam
Department of Anesthesia, Maisonneuve-Rosemont Hospital, CIUSSS-de-l'Est de l'île de Montréal, University of Montreal, Montreal.
Department of Anesthesia, Saint-Jerôme Hospital Center, CISSS des Laurentides, Saint-Jerôme, QC, Canada.
Med Devices (Auckl). 2017 Oct 25;10:253-256. doi: 10.2147/MDER.S150472. eCollection 2017.
Near-infrared spectroscopy provides a non-invasive continuous real-time monitoring of tissue oxygen saturation. As uterine contractions during labor may be associated with a transient uteroplacental hypoperfusion, this prospective, observational study investigates the ability of near-infrared spectroscopy to detect variation in uteroplacental oximetry during uterine contractions.
Four Invos™ oximetry probes (Medtronic, Minneapolis, MN, USA) per subjects were applied on the placental surface (PLA), the abdomen (MYO), the forearm (ARM) and the leg (LEG), of twenty healthy laboring parturients with epidural analgesia. Measurements of mean tissue oxygen saturation and area under the curve (AUC) were made during 60 minutes. The primary outcome was the difference of the AUC measurements between the PLA probe and the MYO probe.
The AUC values for the PLA and MYO probes were not different. The mean saturation values recorded by the PLA probe were not different from the other probes.
The Invos monitor was unable to detect variations in uteroplacental saturation during labor in healthy parturients.
近红外光谱技术可对组织氧饱和度进行无创、连续的实时监测。由于分娩期间子宫收缩可能与短暂的子宫胎盘灌注不足有关，本前瞻性观察性研究旨在探讨近红外光谱技术检测子宫收缩期间子宫胎盘血氧饱和度变化的能力。
对20名接受硬膜外镇痛的健康分娩产妇，在其胎盘表面（PLA）、腹部（MYO）、前臂（ARM）和腿部（LEG）各放置4个Invos™血氧饱和度探头（美国明尼阿波利斯美敦力公司）。在60分钟内测量平均组织氧饱和度和曲线下面积（AUC）。主要观察指标是PLA探头和MYO探头的AUC测量值之差。
PLA探头和MYO探头的AUC值无差异。PLA探头记录的平均饱和度值与其他探头无差异。
对于健康产妇，Invos监测仪无法检测分娩期间子宫胎盘饱和度的变化。
