Results 31 to 40 of about 54,380 (260)

Arterial Blood‐Mediated Deep‐Tissue Photoacoustic Oximetry

Advanced Science, EarlyView.
The arterial prior method (APM+) for photoacoustic oximetry is introduced, which leverages the high arterial blood oxygenation to calibrate the fluence at the artery and estimate the oxygenation of the surrounding tissue, thus circumventing the spectral coloring problem. APM+’s accuracy and consistency are shown in a series of phantom and in vivo human
Karteekeya Sastry, Junhao Zhu, Joshua Olick‐Gibson, Li Lin, Lei Li, Jigmi Basumatary, Yang Zhang, Lihong V. Wang   +7 more
wiley   +1 more source

Soft, Multi‐Wavelength Photoplethysmography Enables Reliable Neonatal Blood Pressure Monitoring Via Error Stratification

Advanced Science, EarlyView.
A soft hybrid multi‐wavelength PPG wearable acquires neonatal signals. Synchronized PPG and invasive ABP data are segmented into fixed windows. A 1D‐EfficientNet model predicts segment‐level SBP and DBP. Model performance is examined with retrospective subgroup analysis across acquisition conditions.
Wenqi Shi, Lanlan Mi, Jiarong Chen, Biao Liu, Min Wang, Zisheng Dai, Bin Liu, Ruize Gao, Yunfeng Lin, Weiwei Guo, Guoxing Wang, Wenyi Luo, Cheng Chen   +12 more
wiley   +1 more source

Bypassing Heteronuclear MRI: Metal‐Free Organosilicon Nanotracers for Background‐Free Hotspot 1H Imaging on Clinical Hardware

Advanced Science, EarlyView.
Organosilicon micelles enable background‐free molecular magnetic resonance imaging (MRI) while remaining fully compatible with standard proton (1H) hardware. By exploiting a spectrally silent 1H window at ∼0 ppm, the silicone nanotracer allows hotspot detection by 1H chemical‐shift imaging (CSI) without metals or heteronuclei, enabling direct overlay ...
Martin Orsagh, Dominik Havlicek, Andrea Galisova, Ondrej Sedlacek, Daniel Jirak   +4 more
wiley   +1 more source

Degree of Hypoxia and Physiological Differences Between Fast and Slow Ascents to Very High Altitude

Oxygen
Introduction: Rapid ascent to altitudes of over 5000 m above sea level are associated with dramatic changes in adaptive physiology. The effects of a gradual ascent on symptoms, oximetry, and heart rate are described and compared with the effects of a ...
Clive Kelly, Shireen Saxena, Kieran Kelly   +2 more
doaj   +1 more source

Reference values for pulp oxygen saturation as a diagnostic tool in endodontics: a systematic review and meta-analysis [PDF]

Restorative Dentistry & Endodontics, 2020
ObjectivesThis systematic review aimed to identify mean oxygen saturation values (SpO2) using pulse oximetry in permanent maxillary anterior teeth.Materials and MethodsThe MEDLINE, Scientific Electronic Library Online, Cochrane Central Register of ...
Paula Lambert, Sergio Augusto Quevedo Miguens, Caroline Solda, Juliana Tomaz Sganzerla, Leandro Azambuja Reichert, Carlos Estrela, Fernando Branco Barletta   +6 more
doaj   +1 more source

Assessing the Feasibility of Wearable Devices for Physiological Monitoring and Heat Risk Prediction in Outdoor Agricultural Workers

American Journal of Industrial Medicine, EarlyView.
ABSTRACT Background Outdoor agricultural workers experience significant heat exposure, yet few studies have evaluated whether wearable sensors can reliably measure continuous physiological responses in real field conditions. This pilot study examined the feasibility and predictive utility of core temperature, hydration, heart rate, and movement data ...
Sinan Sousan, Elizabeth Mizelle, Qiang Wu, Rui Wu, Guy Iverson, Ciprian Popoviciu, Dylan Hemedinger, Eliezer Loyola, Takari Hood, Monica Ramirez, Jo Anne Balanay   +10 more
wiley   +1 more source

Regional gas exchange evaluation during ex vivo lung perfusion in a swine model of localized lung dysfunction

Animal Models and Experimental Medicine, EarlyView.
Abstract Background Ex vivo lung perfusion (EVLP) allows the evaluation of lungs that do not meet standard transplantation criteria. Current procedures do not permit the identification of regional functional deficits. We investigated the feasibility of assessing lobar gas exchange during EVLP in a swine model.
Giulia Maria Ruggeri, Elena Chiodaroli, Matteo Montoli, Sara Pieropan, Alessandro Santini, Gianluca Lopez, Michele Battistin, Luigi Vivona, Sebastiano Maria Colombo, Jacopo Fumagalli, Eleonora Carlesso, Stefano Ferrero, Lorenzo Rosso, Stefano Gatti, Antonio Maria Pesenti, Giacomo Grasselli, Alberto Zanella   +16 more
wiley   +1 more source

Supervised Machine Learning Applied to Automate Flash and Prolonged Capillary Refill Detection by Pulse Oximetry

Frontiers in Physiology, 2020
ObjectiveDevelop an automated approach to detect flash (<1.0 s) or prolonged (>2.0 s) capillary refill time (CRT) that correlates with clinician judgment by applying several supervised machine learning (ML) techniques to pulse oximeter ...
Ryan Brandon Hunter, Shen Jiang, Akira Nishisaki, Amanda J. Nickel, Natalie Napolitano, Koichiro Shinozaki, Timmy Li, Kota Saeki, Lance B. Becker, Vinay M. Nadkarni, Aaron J. Masino   +10 more
doaj   +1 more source

Pulse oximetry [PDF]

Intensive Care Medicine, 2004
Pulse oximetry is universally used for monitoring patients in the critical care setting. This article updates the review on pulse oximetry that was published in 1999 in Critical Care. A summary of the recently developed multiwavelength pulse oximeters and their ability in detecting dyshemoglobins is provided.
openaire   +3 more sources

Safety and pharmacokinetics of mosliciguat, a new, inhaled soluble guanylate cyclase activator, in healthy adult subjects

British Journal of Clinical Pharmacology, EarlyView.
Abstract Aim Mosliciguat (BAY 1237592), the first soluble guanylate cyclase (sGC) activator in a dry powder inhaler (DPI), could potentially treat pulmonary hypertension with a more targeted delivery than systemic sGC stimulators. We report safety and tolerability of mosliciguat in healthy men.
Johannes Nagelschmitz, Soundos Saleh, Sandra Ligges, Melanie Seidel‐Greven, Eva Becker‐Pelster, Sylvia M. Nikkho, Stefanie Boxnick, Wolfgang Timmer   +7 more
wiley   +1 more source