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Nocturnal pulse oxygen saturation dynamics at simulated high altitude: Predictive value for acute mountain sickness in healthy men born pre-term.
Exp Physiol
January 2025
Department for Automatics, Biocybernetics and Robotics, Jožef Stefan Institute, Ljubljana, Slovenia.
The physiological sequelae of pre-term birth might influence the responses of this population to hypoxia. Moreover, identifying variables associated with development of acute mountain sickness (AMS) remains a key practically significant area of altitude research. We investigated the effects of pre-term birth on nocturnal oxygen saturation ( ) dynamics and assessed the predictive potential of nocturnal -related metrics for morning AMS in 12 healthy adults with gestational age < 32 weeks (pre-term) and 12 term-born control participants.
View Article and Find Full Text PDFAccuracy of Rhythm Diagnostic Systems' MultiSense in Detection of Arterial Oxygen Saturation and Respiratory Rate During Hypoxia in Humans: Effects of Skin Color and Device Localization.
Sensors (Basel)
December 2024
Biomedicine Research Center of Strasbourg (CRBS), UR 3072, "Mitochondria, Oxidative Stress and Muscle Plasticity", Faculty of Medicine, University of Strasbourg, 67000 Strasbourg, France.
The continuous monitoring of oxygen saturation (SpO) and respiratory rates (RRs) are major clinical issues in many cardio-respiratory diseases and have been of tremendous importance during the COVID-19 pandemic. The early detection of hypoxemia was crucial since it precedes significant complications, and SpO follow-up allowed early hospital discharge in patients needing oxygen therapy. Nevertheless, fingertip devices showed some practical limitations.
View Article and Find Full Text PDFComparative Effects of Different Exercise Types on Cardiovascular Health and Executive Function in Sedentary Young Individuals.
Med Sci Sports Exerc
January 2025
Guangdong Provincial Key Laboratory of Physical Activity and Health Promotion, Guangzhou Sport University, Guangzhou, Guangdong, CHINA.
Purpose: The present study aimed to compare the impacts of different exercise types on cardiovascular health and executive function in sedentary young individuals, and to determine the associations between cardiovascular function and executive function (EF) after exercise.
Methods: Sixty-three sedentary participants were randomly divided into high-intensity interval training (HIIT), moderate-intensity continuous training (MICT), resistance exercise (RE), and control groups. Macro- and microvascular endothelial function were assessed using brachial artery flow-mediated dilation and fingertip reactive hyperemia index, respectively.
Cardiovascular and vasomotor pulsations in the brain and periphery during awake and NREM sleep in a multimodal fMRI study.
Front Neurosci
October 2024
Department of Diagnostic Radiology, Oulu Functional NeuroImaging (OFNI), Oulu University Hospital, Oulu, Finland.
Introduction: The cerebrospinal fluid dynamics in the human brain are driven by physiological pulsations, including cardiovascular pulses and very low-frequency (< 0.1 Hz) vasomotor waves. Ultrafast functional magnetic resonance imaging (fMRI) facilitates the simultaneous measurement of these signals from venous and arterial compartments independently with both classical venous blood oxygenation level dependent (BOLD) and faster arterial spin-phase contrast.
View Article and Find Full Text PDFImpact of non-invasive oxygen reserve index versus standard SpO2 monitoring on peripheral oxygen saturation during endotracheal intubation in the intensive care unit: Protocol for the randomized controlled trial NESOI2.
PLoS One
September 2024
Nantes Université, Nantes University Hospital, Intensive Care Unit, Motion-Interactions-Performance Laboratory (MIP), UR 4334, Nantes, France.
Article Synopsis
- Endotracheal intubation (ETI) is crucial for critically ill patients
- , but it has risks like hypoxemia; preoxygenation is used to enhance safety but can have unreliable monitoring through standard pulse oximeters (SpO2).
- The Oxygen Reserve Index (ORI)
- is proposed as a more reliable continuous measure during preoxygenation, targeting an ORI value of at least 0.6 over one minute instead of the standard SpO2 100% goal to improve outcomes.
- A trial with 950 critically ill adults
- will compare ORI monitoring against standard SpO2 monitoring during ETI; outcomes include the lowest SpO2 during intubation and cognitive
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