Reix Philippe, Dumont Sylvain, Duvareille Charles, Cyr Jonathan, Moreau-Bussière François, Arsenault Julie, Praud Jean-Paul
Department of Pediatrics, Neonatal Respiratory Research Unit, Université de Sherbrooke, Que., Canada J1H 5N4.
Respir Physiol Neurobiol. 2005 May 12;147(1):65-72. doi: 10.1016/j.resp.2005.01.002.
This study was aimed at validating the use of a custom-made wireless pulse oximeter in freely moving lambs, using radiotelemetry transmission. First, measurements obtained simultaneously using the new, wireless oximeter and a standard commercially-available pulse oximeter (Nonin 8500) were compared in five lambs during 5min episodes of normoxia, hypoxia and hyperoxia. Correlation between the two oximeters for both SpO(2) and heart rate was very good, regardless of oxygenation conditions. Secondly, the capabilities of our device were assessed during more than 45h of polysomnographic recordings in seven lambs. According to the plethysmographic pulse waveform, reliable SpO(2) values were obtained in more than 85% of recording time. Multiple decreases in SpO(2) were readily observed after spontaneous apneas in preterm lambs. It is concluded that our wireless pulse oximeter performs as reliably as a standard pulse oximeter for monitoring SpO(2) variations in lambs, and offers new perspectives for researchers interested in continuous monitoring of oxygenation throughout sleep stages and wakefulness.
本研究旨在通过无线电遥测传输，验证定制的无线脉搏血氧仪在自由活动羔羊中的使用情况。首先，在五只羔羊的常氧、低氧和高氧状态下进行5分钟的实验，比较了使用新型无线血氧仪和标准商用脉搏血氧仪（Nonin 8500）同时获得的测量结果。无论氧合状态如何，两种血氧仪在SpO₂和心率方面的相关性都非常好。其次，在七只羔羊超过45小时的多导睡眠图记录过程中，评估了我们设备的性能。根据容积脉搏波形，在超过85%的记录时间内获得了可靠的SpO₂值。在早产羔羊的自发性呼吸暂停后，很容易观察到SpO₂的多次下降。得出的结论是，我们的无线脉搏血氧仪在监测羔羊SpO₂变化方面的表现与标准脉搏血氧仪一样可靠，并为有兴趣在整个睡眠阶段和清醒状态下持续监测氧合情况的研究人员提供了新的视角。
