PPG is plethysmography that is obtained using an optical device (from “phôtós”, meaning “light”). Overall, the term describes an optically driven method used to detect blood volume changes (BVCs) in the microvascular bed of tissues [2].

PSG是检测阻塞性睡眠呼吸暂停低通气综合征（Obstructive Sleep Apnea Hypopnea syndrome， OSHAS）的金标准，所以有必要在唐僧一下。 睡眠呼吸暂停(sleep apnea，SA)：睡眠过程中口鼻呼吸气流消失或明显减弱(较基线幅度下降≥90％)，持续时间≥10 S。

Recent research indicates that Photoplethysmography (PPG) signals carry more information than oxygen saturation level (SpO2) and can be utilized for affordable, fast, and noninvasive healthcare applications. All these encourage the researchers to ...

Morpheus Ox是以光电容积脉搏波描记法 (PPG)为基础的无创监测装置，利用光电信号通过脉搏血氧仪监测活体组织中血液容积变化，结合血氧饱和度信号，使用专有算法生成呼吸波形及睡眠－觉醒状态，从而完成睡眠觉醒时间、呼吸暂停低通气指数 (AHI)和血氧饱和度的估计。 本研究旨探讨PPG对OSA的诊断价值。 1．对象：纳入2014年3月至2015年3月在四川大学华西医院睡眠中心就诊的打鼾患者。 纳入标准： (1)年龄≥18岁； (2)患者及家属同意并签署知情同意书。 排除标 …

2024年3月5日 · 多导睡眠监测技术，也称为多导睡眠图（polysomnography, PSG），是一种关键的医学技术，用于评估和诊断睡眠障碍。 这项技术通过记录大脑活动、眼球运动、肌肉张力以及其他生理 信号 ，帮助医疗专业人员详细了解 睡眠 的...

High prevalence of obstructive sleep apnea (OSA) has increased the demands for more convenient and accessible diagnostic devices other than standard in-lab polysomnography (PSG). Despite the...

2023年4月12日 · We propose a single-sensor photoplethysmographic (PPG)-based automated multi-stage sleep classification. This experimental study recorded the PPG during the entire night's sleep of 10 patients. Data analysis was performed to obtain 79 features from the recordings, which were then classified according to sleep stages.

High prevalence of obstructive sleep apnea (OSA) has increased the demands for more convenient and accessible diagnostic devices other than standard in-lab polysomnography (PSG). Despite the increasing utility of photoplethysmograph (PPG), it remains understudied in underserved populations.

We evaluated the reliability and accuracy of a single-channel (finger pulse-oximetry) photoplethysmography (PPG)-based device for detection of OSA (Morpheus Ox). Among a cohort of 73 patients referred for in-laboratory evaluation of OSA, 65 were simultaneously monitored with the PPG based device while undergoing PSG.

在这项研究中，我们在临床上验证了人工智能在可互操作、基于 PPG 的逐个睡眠-唤醒分期 (PPG-SW)、总睡眠时间 (PPG-TST) 和呼吸频率 (PPG-RR) 方面的性能，并进行比较1) 技术人员基于 PSG 的面板评分 (RPSGT) 和 2) 基于 PSG 的 AI 评分（EEG-SW、EEG-TST、Effort Belt-RR）。 方法 我们将分层随机抽样与按比例分配应用于 N>10,000 个回顾性 PSG 的数据库。