Malviya S, Reynolds P I, Voepel-Lewis T, Siewert M, Watson D, Tait A R, Tremper K
Department of Anesthesiology, The University of Michigan Health System, Ann Arbor, Michigan 48109-0211, USA.
Anesth Analg. 2000 Jun;90(6):1336-40. doi: 10.1097/00000539-200006000-00013.
We compared the incidence and duration of false alarms (FA)and the sensitivity of conventional pulse oximetry (CPO) with Masimo Signal Extraction Technology (Masimo SET; Masimo Corporation, Irvine, CA) in children in the postanesthesia care unit. Disposable oximeter sensors were placed on separate digits of one extremity. Computerized acquisition of synchronous data included electrocardiograph heart rate, SpO(2), and pulse rate via CPO and Masimo SET. Patient motion, respiratory, and other events were simultaneously documented. SpO(2) tracings conflicting with clinical observations and/or documented events were considered false. These were defined as 1) Data dropout, complete interruption in SpO(2) data; 2) False negative, failure to detect SpO(2) </= 90% detected by another device or based on observation/intervention; 3) FA, SpO(2) </= 90% considered artifactual; and 4) True alarm (TA), SpO(2) </= 90% considered valid. Seventy-five children were monitored for 35 +/- 22 min/patient (42 h total). There were 27 TAs, all of which were identified by Masimo SET and only 16 (59%) were identified by CPO (P < 0.05). There was twice the number of FAs with CPO (10 vs 4 Masimo SET; P < 0.05). The incidence and duration of data dropouts were similar between Masimo SET and CPO. Masimo SET reduced the incidence and duration of FAs and identified a more frequent incidence of TAs compared with CPO.
Pulse oximetry that incorporates Masimo Signal Extraction Technology (Masimo Corporation, Irvine, CA) may offer an advantage over conventional pulse oximetry by reducing the incidence of false alarms while identifying a higher number of true alarms in children in the postanesthesia care unit.
我们比较了麻醉后护理单元中儿童的误报（FA）发生率和持续时间，以及传统脉搏血氧饱和度仪（CPO）与采用Masimo信号提取技术（Masimo SET；Masimo公司，加利福尼亚州欧文市）的脉搏血氧饱和度仪的灵敏度。将一次性血氧饱和度仪传感器置于一个肢体的不同手指上。通过CPO和Masimo SET进行同步数据的计算机采集，包括心电图心率、SpO₂和脉搏率。同时记录患者的活动、呼吸及其他事件。与临床观察和/或记录事件相冲突的SpO₂描记被视为误报。这些误报被定义为：1）数据丢失，SpO₂数据完全中断；2）假阴性，未能检测到另一设备检测到的或基于观察/干预确定的SpO₂≤90%；3）误报，SpO₂≤90%被视为人为因素导致；4）真警报（TA），SpO₂≤90%被视为有效。对75名儿童进行了监测，每位患者监测35±22分钟（总计42小时）。共有27次真警报，所有这些均由Masimo SET识别，而CPO仅识别出16次（59%）（P<0.05）。CPO的误报数量是Masimo SET的两倍（10次对4次Masimo SET；P<0.05）。Masimo SET和CPO之间的数据丢失发生率和持续时间相似。与CPO相比，Masimo SET降低了误报的发生率和持续时间，并识别出更高频率的真警报。
采用Masimo信号提取技术（Masimo公司，加利福尼亚州欧文市）的脉搏血氧饱和度仪可能比传统脉搏血氧饱和度仪更具优势，因为它可降低麻醉后护理单元中儿童的误报发生率，同时识别出更多的真警报。
