Performance of the MP570T pulse oximeter in volunteers participating in the controlled desaturation study: a comparison of seven probes

BACKGROUND: The performance of the pulse oximeter was evaluated based on the ISO 80601-2-61:2011 (E) guidelines. This study aimed to determine whether the various finger probes of the MP570T pulse oximeter (MEK-ICS Co., Ltd., Korea) would provide clinically reliable peripheral oxygen saturation (SpO(2)) readings over a range of 70-100% arterial oxygen saturation (SaO(2)) during non-motion conditions. METHODS: Each volunteer (n = 12) was connected to a breathing circuit for the administration of a hypoxic gas mixture. For frequent blood sampling, an arterial cannula was placed in a radial artery. The following seven pulse oximeter probes were simultaneously attached to each volunteer’s fingers: (1) WA-100 reusable finger probe (MEDNIS Co., Ltd., Korea), (2) MDNA disposable finger probe (MEDNIS Co., Ltd.), (3) IS-1011 disposable finger probe (Insung Medical Co., Ltd., Korea), (4) CJ340NA disposable finger probe (CHUN JI IN Medical Co., Ltd., Korea), (5) Nellcor(TM) OxiMax DS-100A reusable finger probe (Medtronic, USA), (6) Nellcor(TM) OxiMax MAX-N disposable finger probe (Medtronic), and (7) OXI-PRO DA disposable finger probe (Bio-Protech Inc., Korea). RESULTS: A total of 275 SpO(2)-SaO(2) pairs were included in the analysis. The accuracy of the root mean square (A(rms)) of each probe was 2.83%, 3.98%, 3.75%, 6.84%, 3.43%, 5.17%, and 3.84%, respectively. CONCLUSIONS: The MP570T pulse oximeter with WA-100 reusable, MDNA disposable, IS-1011 disposable, Nellcor(TM) OxiMax DS-100A reusable, and OXI-PRO DA disposable finger probes meets an acceptable standard of SpO(2) accuracy under non-motion conditions.