Detecting oxygenation changes after hypoxia: pulse oximetry vs. near-infrared spectroscopy

2021 ◽  
Author(s):  
Amanda Cheung ◽  
Lorna Tu ◽  
Farnaz Sahragard ◽  
Andrew Macnab ◽  
Brian K. Kwon ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Pulse Oximetry ◽  
Near Infrared Spectroscopy ◽  
Near Infrared

Transabdominal fetal pulse oximetry using near-infrared spectroscopy (NIRS)

2003 ◽  
Vol 189 (6) ◽  
pp. S179
Author(s):  
Anthony Vintzileos ◽  
Shoko Nioka ◽  
Marian Lake ◽  
Pengchang Li ◽  
Qingming Luo ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Pulse Oximetry ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Fetal Pulse Oximetry

Transabdominal fetal pulse oximetry with near-infrared spectroscopy

2005 ◽  
Vol 192 (1) ◽  
pp. 129-133 ◽  
Author(s):  
Anthony M. Vintzileos ◽  
Shoko Nioka ◽  
Marian Lake ◽  
Pengcheng Li ◽  
Qingming Luo ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Pulse Oximetry ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Fetal Pulse Oximetry

scholarly journals Thinking Out-of-the-Box: A Non-Standard Application of Standard Pulse-Oximetry and Standard Near-Infrared Spectroscopy in a COVID-19 Patient

2020 ◽  
pp. 088506662096516
Author(s):  
Patrick Schober ◽  
Erik J. Lust ◽  
Leo M. A. Heunks ◽  
Lothar A. Schwarte
Keyword(s):  
Mechanical Ventilation ◽  
Infrared Spectroscopy ◽  
Pulse Oximetry ◽  
Prone Position ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Clinical Report ◽  
Muscle Tissues ◽  
Standard Application ◽  
Standard Pulse

Purpose: Purpose of this report is to describe the feasibility of lingual pulse oximetry and lingual near-infrared spectroscopy (NIRS) in a COVID-19 patient to assess lingual tissue viability after several days of mechanical ventilation in the prone position. Materials & Methods: In a COVID-19 ICU-patient, the tongue became grotesquely swollen, hardened and protruding from the oral cavity after 20 h of mechanical ventilation uninterrupted in the prone position. To assess the doubtful viability of the tongue, pulse-oximetric hemoglobin O2-saturation (SpO2; Nellcor, OxiMax MAX-NI, Covidien, MA, USA) and NIRS-based, regional tissue O2-saturation measurements (rSO2; SenSmart, Nonin, MN, USA) were performed at the tongue. Results: At the tongue, regular pulse-oximetric waveforms with a pulse-oximetric hemoglobin O2-saturation (SpO2) of 88% were recorded, i.e. only slightly lower than the SpO2 reading at the extremities at that time (90%). Lingual NIRS-based rSO2 measurements yielded stable tissue rSO2-values of 76-78%, i.e. values expected also in other adequately perfused and oxygenated (muscle-) tissues. Conclusion: Despite the alarming, clinical finding of a grotesquely swollen, rubber-hard tongue and clinical concerns on the adequacy of the tongue perfusion and oxygenation, our measurements of both arterial pulsatility (SpO2) and NIRS-based tissue oxygenation (rSO2) suggested adequate perfusion and oxygenation of the tongue, rendering non-vitality of the tongue, e.g. by lingual venous thrombosis, unlikely. To our knowledge, this is the first clinical report of lingual rSO2 measurement.

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