نتایج جستجو برای: oxygenation

تعداد نتایج: 20929  

Journal: :Critical Care 2009
Karin Blijdorp Karlien Cransberg Enno D Wildschut Saskia J Gischler Robert Jan Houmes Eric D Wolff Dick Tibboel

INTRODUCTION Extracorporeal membrane oxygenation is a supportive cardiopulmonary bypass technique for patients with acute reversible cardiovascular or respiratory failure. Favourable effects of haemofiltration during cardiopulmonary bypass instigated the use of this technique in infants on extracorporeal membrane oxygenation. The current study aimed at comparing clinical outcomes of newborns on...

Journal: :Geochimica et Cosmochimica Acta 2021

The Archean-Proterozoic transition marks a time of fundamental geologic, biologic, and atmospheric changes to the Earth system, including oxygenation atmosphere (termed Great Oxygenation Event; GOE), emergence continents above sea level. impacts GOE on Earth’s surface environment are imprinted geologic record, disappearance mass-independent fractionation sulfur isotopes (S-MIF). Temporally over...

Journal: :Journal of athletic training 2015
Kenneth E Games JoEllen M Sefton Alan E Wilson

CONTEXT The use and popularity of whole-body vibration (WBV) has increased in recent years, but there is a lack of consensus in the literature about the effectiveness of the treatment. OBJECTIVE To quantitatively examine the effects of WBV on muscle oxygenation and peripheral blood flow in healthy adults. DATA SOURCES We searched Web of Science and PubMed databases and reference lists from ...

2014
Joel Neugarten Ladan Golestaneh

Blood oxygen level-dependent magnetic resonance imaging (BOLD MRI) has recently emerged as an important noninvasive technique to assess intrarenal oxygenation under physiologic and pathophysiologic conditions. Although this tool represents a major addition to our armamentarium of methodologies to investigate the role of hypoxia in the pathogenesis of acute kidney injury and progressive chronic ...

Journal: :Journal of biomedical optics 2011
Sylvain Gioux Amaan Mazhar Bernard T Lee Samuel J Lin Adam M Tobias David J Cuccia Alan Stockdale Rafiou Oketokoun Yoshitomo Ashitate Edward Kelly Maxwell Weinmann Nicholas J Durr Lorissa A Moffitt Anthony J Durkin Bruce J Tromberg John V Frangioni

Oxygenation measurements are widely used in patient care. However, most clinically available instruments currently consist of contact probes that only provide global monitoring of the patient (e.g., pulse oximetry probes) or local monitoring of small areas (e.g., spectroscopy-based probes). Visualization of oxygenation over large areas of tissue, without a priori knowledge of the location of de...

Journal: :Annals of emergency medicine 2017
Lucas Oliveira J E Silva Daniel Cabrera Patricia Barrionuevo Rebecca L Johnson Patricia J Erwin M Hassan Murad M Fernanda Bellolio

STUDY OBJECTIVE We conduct a systematic review and meta-analysis to evaluate the effectiveness of apneic oxygenation during emergency intubation. METHODS We searched Ovid MEDLINE, Ovid EMBASE, Ovid CENTRAL, and Scopus databases for randomized controlled trials and observational studies from 2006 until July 2016, without language restrictions. Gray literature, clinicaltrials.gov, and reference...

Journal: :International journal of sports medicine 2008
I Vogiatzis D Tzineris D Athanasopoulos O Georgiadou N Geladas

The aim of the present study was to investigate why blood lactate after prolonged quadriceps contraction during hiking is only marginally increased. Eight sailors performed five 3-min hiking bouts interspersed with 5-s recovery periods. Whole body oxygen uptake, heart rate and lactate were recorded, along with continuous-wave near-infrared spectroscopy measures of quadriceps oxygenation. The ti...

2012
I. Y. Petrov Y. Petrov D. S. Prough D. J. Deyo I. Cicenaite R. O. Esenaliev

There is strong clinical evidence that controlling cerebral venous oxygenation (oxyhemoglobin saturation) is critically important for patients with severe traumatic brain injury as well as for patients undergoing cardiac surgery. However, the only available method for cerebral venous blood oxygenation monitoring is invasive and requires catheterization of the internal jugular vein. We designed ...

2015
Graeme R. Polglase Jennifer A. Dawson Martin Kluckow Andrew W. Gill Peter G. Davis Arjan B. te Pas Kelly J. Crossley Annie McDougall Euan M. Wallace Stuart B. Hooper

BACKGROUND As measurement of arterial oxygen saturation (SpO2) is common in the delivery room, target SpO2 ranges allow clinicians to titrate oxygen therapy for preterm infants in order to achieve saturation levels similar to those seen in normal term infants in the first minutes of life. However, the influence of the onset of ventilation and the timing of cord clamping on systemic and cerebral...

2016
Xincun Zhang Fan Yue Hui Li Yan Huang Yi Zhang Hongmei Wen Jide Wang

We systematically investigated the reversibility, time lapse, and oxygenation-deoxygenation properties of 15 natural α-amino acid-Co(II) complexes through UV-vis spectrophotometer, polarographic oxygen electrode, and DFT calculations, respectively, to explore the relationship between the coordinating structure and reversible oxygenation of α-amino acid-Co(II) complexes. Results revealed that th...

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