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Amazon.com: Pulse oximeter fingertip, Portable blood oxygen saturation monitor for heart rate and SpO2 level, O2 monitor finger for oxygen,Pulse Ox,Oxi Include carrying case,lanyard and batteries, Grey-White : Health & Household
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What is PR BPM in pulse oximeter? Normal values high or low count mean? - Dr. Durgaprasad Reddy B - YouTube
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Pulse oximetry: Understanding its basic principles facilitates appreciation of its limitations - ScienceDirect
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