Pulse oximetry is a noninvasive monitoring technique used to assess a patient's arterial blood oxygen saturation and pulse rate. This technology has been shown to be effective at helping clinicians detect hypoxemia. However, conventional pulse oximeters are known to have difficulty obtaining accurate readings during periods of motion and low perfusion, resulting in frequent nuisance alarms. To address the limitations of conventional pulse oximeters, several suppliers have developed what we term next-generation technologies. These technologies are marketed as being able to obtain accurate values when conventional technologies cannot. But do these technologies live up to their suppliers' claims? In this Evaluation, we test the technologies from five suppliers--Masimo, Nellcor, Philips, Respironics Novametrix, and Siemens--to answer that question. Our laboratory testing focused on the technologies' ability to monitor saturation and pulse rate during periods of motion and low perfusion--and thus their ability to reduce nuisance alarms compared with conventional technology. We also looked for evidence of missed alarm events, we examined susceptibility to light interference, we analyzed the literature, and we spoke with current users. In addition to Product Profiles for each evaluated technology and a Conclusions section that describes our comparative ratings, we present a detailed discussion of our test results, a selection guide to help healthcare facilities make implementation decisions, and a comprehensive review of the literature on next-generation pulse oximetry.
脉搏血氧饱和度测定法是一种用于评估患者动脉血氧饱和度和脉搏率的非侵入性监测技术。该技术已被证明在帮助临床医生检测低氧血症方面是有效的。然而，众所周知，传统的脉搏血氧仪在运动和低灌注期间难以获得准确读数，导致频繁出现烦人的警报。为了解决传统脉搏血氧仪的局限性，几家供应商开发了我们所称的下一代技术。这些技术在市场上宣称在传统技术无法做到时能够获得准确数值。但这些技术是否名副其实呢？在本评估中，我们测试了来自五家供应商——Masimo、Nellcor、飞利浦、伟康诺瓦美迪克斯和西门子——的技术，以回答这个问题。我们的实验室测试重点关注这些技术在运动和低灌注期间监测饱和度和脉搏率的能力——以及因此与传统技术相比减少烦人的警报的能力。我们还寻找漏报事件的证据，检查对光干扰的敏感性，分析文献，并与当前用户进行交流。除了每种评估技术的产品简介以及描述我们比较评级的结论部分外，我们还对测试结果进行了详细讨论，提供了一份帮助医疗机构做出实施决策的选择指南，并对下一代脉搏血氧饱和度测定法的文献进行了全面综述。
