Peripheral vasoconstriction influences thenar oxygen saturation as measured by near-infrared spectroscopy.

Intensive Care Medicine
Alexandre LimaJasper van Bommel

Abstract

Near-infrared spectroscopy has been used as a noninvasive monitoring tool for tissue oxygen saturation (StO(2)) in acutely ill patients. This study aimed to investigate whether local vasoconstriction induced by body surface cooling significantly influences thenar StO(2) as measured by InSpectra model 650. Eight healthy individuals (age 26 ± 6 years) participated in the study. Using a cooling blanket, we aimed to cool the entire body surface to induce vasoconstriction in the skin without any changes in central temperature. Thenar StO(2) was noninvasively measured during a 3-min vascular occlusion test using InSpectra model 650 with a 15-mm probe. Measurements were analyzed for resting StO(2) values, rate of StO(2) desaturation (RdecStO(2), %/min), and rate of StO(2) recovery (RincStO(2), %/s) before, during, and after skin cooling. Measurements also included heart rate (HR), mean arterial pressure (MAP), cardiac output (CO), stroke volume (SV), capillary refill time (CRT), forearm-to-fingertip skin-temperature gradient (Tskin-diff), perfusion index (PI), and tissue hemoglobin index (THI). In all subjects MAP, CO, SV, and core temperature did not change during the procedure. Skin cooling resulted in a significant decrease in StO(...Continue Reading

References

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Citations

Apr 9, 2013·Journal of Clinical Monitoring and Computing·R J SpruitT W L Scheeren
Sep 18, 2013·Annals of Intensive Care·Hafid Ait-OufellaBertrand Guidet
Jun 6, 2014·Critical Care Research and Practice·Carol Diane Epstein, Karen Toby Haghenbeck
Sep 17, 2013·Medicina intensiva·G GruartmonerF Baigorri
Sep 16, 2015·Critical Care : the Official Journal of the Critical Care Forum·Huaiwu HeXiang Zhou
Apr 2, 2015·Current Opinion in Critical Care·Alexandre Lima, Jan Bakker
Apr 14, 2016·Journal of Clinical Monitoring and Computing·Omar TujjarAlessandro Di Filippo
Apr 21, 2012·Current Opinion in Critical Care·Michel E van GenderenAlexandre Lima
Aug 11, 2020·The Journal of International Medical Research·Hui LianDawei Liu
Apr 20, 2018·Medizinische Klinik, Intensivmedizin und Notfallmedizin·D HusterH Ebelt
Jan 10, 2020·Journal of Clinical Monitoring and Computing·Koichiro ShinozakiLance B Becker
Dec 29, 2020·Frontiers in Medicine·Julianne M FaloticoLance B Becker
Apr 15, 2021·Current Opinion in Critical Care·Jan Bakker

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Software Mentioned

NICOM
Tskin
diff
SPSS
Masimo

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