TcPO2 changes are more pronounced than SpO2 changes during simulated altitude changes in a hypobaric oxygen chamber:a nonrandomized controlled trial

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外文摘要：Background:Hypoxia is a significant risk factor of hypertension.However,no studies have used transcutaneous tissue partial pressure of oxygen(TcPO2)and partial pressure of carbon dioxide(TcPCO2)monitors to measure the respective partial pressures in healthy indi-viduals.Oxygen saturation(SpO2)is often used for traditional monitoring of vital signs.This study investigated the changes in TcPO2 and SpO2 values during rapid changes in altitude.The trial was registered at ClinicalTrials.gov(registration no.NCT06076057).Methods:Healthy adult volunteers were instructed to sit vertically in a hypobaric oxygen chamber,which ascended from 0 m to 2500 m at a uniform speed within 10 min.The Danish Radiometer TCM4 was used to measure TcPO2 and TcPCO2 with the ventral side of the upper arm as the measure-ment site.The Shenzhen Kerokan P0D-1 W pulse oximeter was used to measure heart rate and SpO2,with values recorded once every 500 m.Results:Altogether,49 healthy volunteers were recruited between March 2023 and August 2023.With increasing altitude,TcPO2 and SpO2 decreased significantly(P＜0.01).During the ascent from 0 m,TcPO2 began to change statistically at 500 m(P＜0.05),whereas SpO2 began to change statistically at 1000 m(P＜0.05).At the same altitude,the difference in TcPO2 was greater than the difference in SpO2.At 1000 m,there were statistically significant changes in TcPO2 and SpO2(P＜0.001).At altitudes＞500 m,statistical significance was identified between TcPO2 in both sexes(P＜0.05).Statistical significance in TcPCO2 and heart rate was observed at the different elevations(P＜0.05).Conclusion:In acutely changing low-pressure hypoxic environments,TcPO2 changed more dramatically than SpO2.

外文关键词：

Altitude changeLow-pressure oxygen chamberTranscutaneous oxygen saturationTranscutaneous partial pressure of oxygen

作者：

Yang Li、Liang Chen、Ziyu Fu、Zhiwei Wang、Shijun Sun、Xiaorong Luan、Dedong Ma、Tianliang Hu

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作者单位：

School of Nursing and Rehabilitation,Shandong University,Jinan,Shandong,China

Department of Emergency and Critical Care Medicine,Qilu Hospital of Shandong University,Jinan,Shandong,China

Department of Pulmonary and Critical Care Medicine,Qilu Hospital of Shandong University,Jinan,Shandong,China

Emergency Management Center of State Grid Shandong Electric Power Company,Jinan,Shandong,China

School of Nursing and Rehabilitation,Cheeloo College of Medicine,University of Shandong,Department of Infection Control,Qilu Hospital of Shandong University,Jinan,Shandong,China

School of Mechanical Engineering,Shandong University,Key Laboratory of the Ministry of Education for Efficient and Clean Machinery Manufacturing,National Experimental Teaching Demonstration Center for Mechanical Engineering,Jinan,Shandong,China

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基金：

Shandong Province Key R&D Program

项目编号：

2021CXGC011301

出版年：

2024

DOI：

10.1097/EC9.0000000000000122

急危重症医学(英文)

ISSN：

年,卷(期)：2024.4(3)