Unverified85% confidenceDecision RuleTime unknown
指夹式血氧仪对低灌注（末梢循环差）人群测量不准，如果患者有雷诺综合征、休克、低血压或手指冰凉，应选带PI值（灌注指数）显示的机型，PI＜0.4时读数不可信
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85%
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Long-term
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Unverified指夹式血氧仪在低灌注（末梢循环差、低血压、寒冷、雷诺氏综合征）场景下读数不准或无法测量，此类人群应选带'低灌注指数(PI)显示'或标注'低灌注模式'的机型，PI<0.4时普通机型基本失效92% similarUnverified指夹式血氧仪的核心不足是运动状态下和低灌注（手指冰凉/循环差）时读数漂移大，此类人群（老人、糖尿病周围血管病变）应选带PI灌注指数显示的型号，PI值<0.4时读数不可信91% similarUnverified指夹式血氧仪对低灌注人群（低血压、末梢循环差、老年人、寒冷环境）读数不稳定，这类人群应选择带'低灌注指数(PI)显示'或'抗运动干扰'技术的型号，PI值＜0.4时读数普遍不可信88% similarUnverified指夹式血氧仪对灌注指数PI≥0.4才能稳定读数，末梢循环差（手脚冰凉、糖尿病、老年人）人群应选带PI显示且低灌注检测能力强的机型88% similarUnverified指夹式血氧仪对灌注低（末梢冰凉、老人、休克）人群误差可达±3%以上，慢阻肺/心衰患者建议选带灌注指数PI显示的型号，PI<0.4时读数不可信87% similar
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