نتایج جستجو برای: hemoglobin oxygen saturation

تعداد نتایج: 295909  

Journal: :The Turkish journal of gastroenterology : the official journal of Turkish Society of Gastroenterology 2006
Mehmet Kiliç Kadim Bayan Serif Yilmaz Yekta Tüzün Mehmet Dursun Fikri Canoruç

BACKGROUND/AIMS We aimed to investigate whether endoscopy or midazolam as premedication causes oxygen desaturation and to determine factors which may affect the occurrence of oxygen desaturation. METHODS Totally 200 patients with various indications (103 men and 97 women), who presented to the Endoscopy Unit of Dicle University Hospital for upper gastrointestinal endoscopy examination, were i...

Journal: :Veterinary research 2002
Carole Cambier Thierry Clerbaux Bruno Detry Vincent Marville Albert Frans Pascal Gustin

Blood oxygen transport and tissue oxygenation were studied in 28 calves from the Belgian White and Blue breed (20 healthy and 8 hypoxaemic ones). Hypoxaemic calves were selected according to their high respiratory frequency and to their low partial oxygen pressure (PaO2) in the arterial blood. Venous and arterial blood samples were collected, and 2,3-diphosphoglycerate, adenosine triphosphate, ...

Journal: :The Journal of clinical investigation 1983
C T Noguchi D A Torchia A N Schechter

To determine the extent to which the broad distribution in intracellular hemoglobin concentrations found in sickle erythrocytes affects the extent of intracellular polymerization of hemoglobin S, we have fractionated these cells by density using discontinuous Stractan gradients. The amount of polymer formed in the subpopulations was experimentally measured as a function of oxygen saturation usi...

Journal: :Applied optics 2005
Subhadra Srinivasan Brian W Pogue Shudong Jiang Hamid Dehghani Keith D Paulsen

A multispectral direct chromophore and scattering reconstruction technique has been implemented for near-infrared frequency-domain tomography in recovering images of total hemoglobin, oxygen saturation, water, and scatter parameters. The method applies the spectral constraint of the chromophores and scattering spectra directly in the reconstruction algorithm, thereby reducing the parameter spac...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
Cynthia M Beall Michael J Decker Gary M Brittenham Irving Kushner Amha Gebremedhin Kingman P Strohl

We describe, in Ethiopia, a third successful pattern of human adaptation to high-altitude hypoxia that contrasts with both the Andean "classic" (erythrocytosis with arterial hypoxemia) and the more recently identified Tibetan (normal venous hemoglobin concentration with arterial hypoxemia) patterns. A field survey of 236 Ethiopian native residents at 3,530 m (11,650 feet), 14-86 years of age, w...

اسماعیلی, الهام , حسنی, ابراهیم , سینایی, بهزاد , ماهوری, علیرضا , نوروزی‌نیا, حیدر ,

Background: Pulseoximetry is widely used in the critical care setting, currently used to guide therapeutic interventions. Few studies have evaluated the accuracy of SPO2 (puls-eoximetry oxygen saturation) in intensive care unit after cardiac surgery. Our objective was to compare pulseoximetry with arterial oxygen saturation (SaO2) during clinical routine in such patients, and to examine the eff...

2011
Bertan Hallacoglu Angelo Sassaroli Sergio Fantini Aron M Troen

Brain microvascular pathology is a common finding in Alzheimer's disease and other dementias. However, the extent to which microvascular abnormalities cause or contribute to cognitive impairment is unclear. Noninvasive near-infrared spectroscopy (NIRS) can address this question, but its use for clarifying the role of microvascular dysfunction in dementia has been limited due to theoretical and ...

2016
Xin Geng Kobina Dufu Athiwat Hutchaleelaha Qing Xu Zhe Li Chien‐Ming Li Mira P. Patel Nicholas Vlahakis Josh Lehrer‐Graiwer Donna Oksenberg

Although exertional dyspnea and worsening hypoxia are hallmark clinical features of idiopathic pulmonary fibrosis (IPF), no drug currently available could treat them. GBT1118 is a novel orally bioavailable small molecule that binds to hemoglobin and produces a concentration-dependent left shift of the oxygen-hemoglobin dissociation curve with subsequent increase in hemoglobin-oxygen affinity an...

Journal: :Journal of wildlife diseases 2012
Lisa I Muller David A Osborn Tom Doherty M Kevin Keel Brad F Miller Robert J Warren Karl V Miller

Physiologic monitoring is important when chemically immobilizing wildlife. Blood oxygenation is usually monitored by pulse oximetry in the field; however, there is some question whether this technique accurately reflects oxygen saturation in wild white-tailed deer (Odocoileus virginianus). We evaluated different doses of medetomidine (125, 150, 175, or 200 μg/kg) mixed with ketamine (1.5 mg/kg)...

Journal: :The Journal of clinical investigation 1970
R D Woodson J D Torrance S D Shappell C Lenfant

The relation between degree of cardiac functional impairment and changes in hemoglobin-oxygen affinity and 2,3-diphosphoglycerate (2,3-DPG) has been studied in 39 patients with noncyanotic heart disease. A progressive decline in hemoglobin-oxygen affinity was found with worsening cardiac function as assessed by cardiac index, arteriovenous oxygen (A-V O(2)) difference, and cardiac symptoms; thi...

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