Unverified88% confidenceFactTime unknown
指夹式血氧仪在末梢循环差（低灌注PI＜0.4）或指端冰凉时读数会显著偏低或无法测出，儿童手脚冰凉时应先搓热再测，否则会误判为缺氧
1
Sources
88%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified指夹式血氧仪在低灌注（低血压、手脚冰凉、外周循环差）人群上读数容易失真甚至无读数，这类人群应选择带高灌注指数PI显示或标注低灌注技术的机型，避免误判83% similarUnverified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83% 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82% 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82% similarUnverified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82% similar
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