Unverified82% confidenceDecision RuleTime unknown

血氧监测精度是核心，选择采用双波长反射式PPG传感器且血氧误差≤±2%的产品，单纯脉搏波估算血氧的低价款在SpO2低于90%时误报率显著上升，失去预警意义

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Unverified血氧监测精度要求脉搏血氧饱和度误差≤±2%（Masimo或类似医疗级传感器方案），消费级光电传感器在婴儿低灌注和肢体活动状态下误报率显著升高，选购时应查看是否标注SpO2精度范围86% similar Unverified血氧监测型监护仪（如袜式）需确认采用医疗级反射式血氧传感器，脉搏血氧饱和度精度应在±2%以内，低于此精度的产品夜间误报率显著升高84% similar

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