Department of Psychiatry, University of Wisconsin-Madison, Madison, Wisconsin.
Wisconsin Institute for Sleep and Consciousness, University of Wisconsin-Madison, Madison, Wisconsin.
J Clin Sleep Med. 2023 Dec 1;19(12):2113-2116. doi: 10.5664/jcsm.10800.
This study evaluated the accuracy of the algorithmic oxygen saturation (SpO) nadir detection of WatchPAT (Zoll/Itamar, Caesarea, Israel) compared with visual inspection in a real-world setting. SpO tracings for 209 consecutive adult WatchPAT recordings were reviewed for SpO artifact, with erroneous SpO data removed manually. Error rates for SpO minima were determined across all studies, and relationships between correct and erroneous studies examined. The overall error rate for SpO nadir was 22.5%. Erroneous studies had overall less time spent at SpO ≤ 88%, higher true SpO nadir, lower mean body mass index, and greater artifact time; however, these variables were not associated with the magnitude of discrepancy between manual and algorithmically derived SpO minima. These data demonstrate that SpO nadir determined by WatchPAT algorithms should not be considered universally accurate. Like other home sleep apnea tests, visual inspection and manual correction of the study data are often required to derive accurate clinical results.
Plante DT, Rumble ME. Don't hold PAT: watch for and correct oximetry artifact. . 2023;19(12):2113-2116.
本研究评估了 WatchPAT（Zoll/Itamar，以色列凯撒利亚）算法血氧饱和度（SpO ）最低值检测的准确性，与实际环境中的视觉检查相比。对 209 例连续成人 WatchPAT 记录的 SpO 描记进行了 SpO 伪影审查，并手动删除了错误的 SpO 数据。在所有研究中确定了 SpO 最小值的错误率，并检查了正确和错误研究之间的关系。SpO 最低值的总体错误率为 22.5%。错误的研究总体上在 SpO ≤ 88%的时间较短，真实 SpO 最低值较高，平均体重指数较低，伪影时间较长；然而，这些变量与手动和算法衍生的 SpO 最低值之间的差异幅度无关。这些数据表明，WatchPAT 算法确定的 SpO 最低值不能被普遍认为是准确的。与其他家用睡眠呼吸暂停测试一样，通常需要视觉检查和手动校正研究数据，以得出准确的临床结果。
Plante DT，Rumble ME。不要持怀疑态度：观察并纠正血氧仪伪影。 。2023;19(12):2113-2116。
