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Pulse oximetry

Narin N Carmel-Neiderman, Idan Goren, Yishay Wasserstrum, Tal Frenkel Rutenberg, Irina Barbarova, Avigal Rapoport, Dor Lotan, Erez Ramaty, Naama Peltz-Sinvani, Adi Brom, Michael Kogan, Yulia Panina, Maya Rosman, Carmel Friedrich, Irina Gringauz, Amir Dagan, Iris Kliers, Tomer Ziv-Baran, Gad Segal
BACKGROUND: Accurate pulse oximetry reading at hospital admission is of utmost importance, mainly for patients presenting with hypoxemia. Nevertheless, there is no accepted or evidence-based protocol for such structured measuring. OBJECTIVES: To devise and assess a structured protocol intended to increase the accuracy of pulse oximetry measurement at hospital admission. METHODS: The authors performed a prospective comparison of protocol-based pulse-oximetry measurement with non-protocol based readings in consecutive patients at hospital admission...
March 2018: Israel Medical Association Journal: IMAJ
Ali Hariri, Junxin Wang, Yeji Kim, Anamik Jhunjhunwala, Daniel L Chao, Jesse V Jokerst
Chorioretinal imaging has a crucial role for the patients with chorioretinal vascular diseases, such as neovascular age-related macular degeneration. Imaging oxygen gradients in the eye could better diagnose and treat ocular diseases. Here, we describe the use of photoacoustic ocular imaging (PAOI) in measuring chorioretinal oxygen saturation (CR  -  sO2) gradients in New Zealand white rabbits (n  =  5) with ocular ischemia. We observed good correlation (R2  =  0.98) between pulse oximetry and PAOI as a function of different oxygen percentages in inhaled air...
March 2018: Journal of Biomedical Optics
Carmelo Panetta, Sunil Rao
OBJECTIVES: Study a novel method using manual pressure on a hemostatic pad and hemoband for ulnar compression as a potential alternative for radial sheath removal. BACKGROUND: The standard for transradial access site (TRA) sheath removal requires an inflatable pressure band over the radial artery and recently a band over the ulnar artery to reduce complications. We present a novel technique using a SoftSeal®-STF hemostatic pad over the radial artery combined with a hemoband over the ulnar artery after sheath removal...
March 9, 2018: Catheterization and Cardiovascular Interventions
John Mark Cline, Greg Dugan, John Daniel Bourland, Donna L Perry, Joel D Stitzel, Ashley A Weaver, Chen Jiang, Artak Tovmasyan, Kouros Owzar, Ivan Spasojevic, Ines Batinic-Haberle, Zeljko Vujaskovic
Radiation injury to the lung is the result of acute and chronic free radical formation, and there are currently few effective means of mitigating such injury. Studies in rodents indicate that superoxide dismutase mimetics may be effective in this regard; however, studies in humans or large animals are lacking. We hypothesized that post-exposure treatment with the lipophilic mitochondrial superoxide dismutase mimetic, MnTnHex-2-PyP5+ (hexyl), would reduce radiation-induced pneumonitis and fibrosis in the lungs of nonhuman primates...
March 7, 2018: Antioxidants (Basel, Switzerland)
Gloria Pelizzo, Anna Guddo, Aurora Puglisi, Annalisa De Silvestri, Calogero Comparato, Mario Valenza, Emanuele Bordonaro, Valeria Calcaterra
The reliability of wearable photoplethysmography (PPG) sensors to measure heart rate (HR) in hospitalized patients has only been demonstrated in adults. We evaluated the accuracy of HR monitoring with a personal fitness tracker (PFT) in children undergoing surgery. HR monitoring was performed using a wrist-worn PFT (Fitbit Charge HR) in 30 children (8.21 ± 3.09 years) undergoing laparoscopy ( n = 8) or open surgery ( n = 22). HR values were analyzed preoperatively and during surgery. The accuracy of HR recordings was compared with measurements recorded during continuous electrocardiographic (cECG) monitoring; HRs derived from continuous monitoring with pulse oximetry (SpO2R) were used as a positive control...
March 8, 2018: Children
Catherine M Ivy, Julia M York, Sabine L Lague, Beverly A Chua, Luis Alza, Kevin G McCracken, William K Milsom, Graham R Scott
Hypoxia at high altitudes constrains O2 supply to support metabolism, thermoregulation in the cold, and exercise. High-altitude natives that somehow overcome this challenge-who live, reproduce, and sometimes perform impressive feats of exercise at high altitudes-are a powerful group in which to study the evolution of physiological systems underlying hypoxia resistance. Here, we sought to determine whether a common pulse oximetry system for rodents (MouseOx Plus) can be used reliably in studies of high-altitude birds by examining the hypoxia responses of the Andean goose...
May 2018: Physiological and Biochemical Zoology: PBZ
Michael Furian, Sara E Hartmann, Tsogyal D Latshang, Deborah Flueck, Christian Murer, Philipp M Scheiwiller, Batyr Osmonov, Silvia Ulrich, Malcolm Kohler, Marc J Poulin, Konrad E Bloch
BACKGROUND: Effects of hypobaric hypoxia at altitude on exercise performance of lowlanders with chronic obstructive pulmonary disease (COPD) have not been studied in detail. OBJECTIVES: To quantify changes in exercise performance and associated physiologic responses in lowlanders with COPD travelling to moderate altitude. METHODS: A total of 31 COPD patients with a median age (quartiles) of 66 years (59; 69) and FEV1 of 56% predicted (49; 69) living below 800 m performed a constant-load bicycle exercise to exhaustion at 60% of the maximal work rate at 490 m (Zurich) and at an identical work rate at 2,590 m (Davos) in randomized order...
March 2, 2018: Respiration; International Review of Thoracic Diseases
Maria N Plana, Javier Zamora, Gautham Suresh, Luis Fernandez-Pineda, Shakila Thangaratinam, Andrew K Ewer
BACKGROUND: Health outcomes are improved when newborn babies with critical congenital heart defects (CCHDs) are detected before acute cardiovascular collapse. The main screening tests used to identify these babies include prenatal ultrasonography and postnatal clinical examination; however, even though both of these methods are available, a significant proportion of babies are still missed. Routine pulse oximetry has been reported as an additional screening test that can potentially improve detection of CCHD...
March 1, 2018: Cochrane Database of Systematic Reviews
Angela Tedesco, Valentina Lavermicocca, Marilina Notarnicola, Luca De Francesco, Anna Rita Dellomonaco
The process of medical-healthcare technological revolution represents an advantage for the patient and for the care provider, in terms of costs and distances reduction. The telehomecare approach could be useful for monitoring the swallowing disorder in neurodegenerative diseases, preventing complications. In this study the applicability of telemedicine techniques for the monitoring of swallowing function, in patients affected by Huntington's disease (HD), was evaluated through the acquisition and analysis of the sound of swallowing...
February 2018: Recenti Progressi in Medicina
Reinhard Told, Agnes Boltz, Leopold Schmetterer, Gerhard Garhöfer, Stefan Sacu, Ursula Schmidt-Erfurth, Andreas Pollreisz
PURPOSE: Spectrophotometric retinal oximetry is a non-invasive technology for measuring oxygen saturation in arterioles and venules (SaO2 , SvO2 ). We compared two commercially available systems: the Oxymap T1 (Oxymap ehf., Reykjavik, Iceland) and the Dynamic Vessel Analyzer (DVA, Imedos, Jena, Germany). METHODS: Twenty healthy adults were included after giving informed consent. Two measurement cycles 30 min apart, including Oxymap T1, DVA, arterialized capillary blood draw of the earlobe (ScO2 ) and peripheral oxygen saturation using finger pulse oximetry (SpO2 ) were scheduled...
February 28, 2018: Acta Ophthalmologica
Khaled Gamal Dahy, Katsu Takahashi, Kazuyuki Saito, Azumi Kakeno, Honoka Kiso, Yu Isobe, Sayaka Mishima, Keita Asai, Abd-Elmateen Moussa, Badawy Shahat, Ibrahim Rezk, Toru Oga, Satoshi Morita, Kazuo Chin, Kazuhisa Bessho
OBJECTIVES: The aim of this study was to examine the relationship between morphologic factors of mandibular protrusion patients and clinical indices of obstructive sleep apnea (OSA). METHODS: Fifty-two Japanese patients divided into 2 groups: 1 jaw surgery group (30 patients) and 2 jaw surgery group (22 patients). Morphologic changes were studied using cephalograms taken before surgery and 1 year after surgery. Functional changes studied using impulse oscillometry and pulse oximetry during sleep, both of which are clinically useful measures in assessing OSA, taken before surgery and 1 year after surgery...
February 23, 2018: Journal of Craniofacial Surgery
Michael Narvey, Kenny K Wong, Anne Fournier
Pulse oximetry screening is safe, noninvasive, easy to perform and proven to enhance detection of critical congenital heart disease in newborns. However, this test has yet to be adopted as routine practice in Canada. The present practice point highlights essential details and recommendations for screening, which research has shown to be highly specific, with low false-positive rates. Optimal screening for critical congenital heart disease should include prenatal ultrasound, physical examination and pulse oximetry screening...
November 2017: Paediatrics & Child Health
Marnie Lightfoot, Philip Hough, Alan Hudak, Michelle Gordon, Sarah Barker, Robert Meeder, Melanie Colpitts, Gwendolyn Roberts, William Gary Smith
Objectives: To assess the efficacy of a new screening protocol for critical congenital heart disease (CCHD). Background: In March 2014, the Ontario Provincial Council for Maternal Child Health (PCMCH) recommended screening for CCHD, utilizing pulse oximetry to measure oxygen saturation as part of the newborn examination. However, this is yet to be implemented in all hospitals. Method: An audit of consecutive healthy normal newborn patients in a secondary level centre in Ontario with early adoption of the screening recommendation over a 1-year period was undertaken...
September 2017: Paediatrics & Child Health
Grace Wellington, Dawn Elder, Angela Campbell
Wellington G, Elder D, Campbell A. 24 - hour oxygen saturation recordings in preterm infants: editing artefact. AIM: To create editing guidelines for artefact removal in preterm infant pulse oximetry recordings. METHODS: 38 preterm infants ready for discharge home from the neonatal intensive care unit underwent 24-hour pulse oximetry recording using the Masimo® Rad-8 device. An expert panel determined editing rules based on clinical protocols. For each recording three reports were generated, 'raw' no editing, 'auto' using the software editing feature and 'manual' reviewed and edited according to the rules...
February 24, 2018: Acta Paediatrica
Paul Robach, Joar Hansen, Aurélien Pichon, Anne-Kristine Meinild Lundby, Sune Dandanell, Gunnar Slettaløkken Falch, Daniel Hammarström, Dominik H Pesta, Christoph Siebenmann, Stefanie Keiser, Patricia Kérivel, Jon Elling Whist, Bent R Rønnestad, Carsten Lundby
Live high - train low (LHTL) using hypobaric hypoxia was previously found to improve sea-level endurance performance in well-trained individuals, however confirmatory controlled data in athletes are lacking. Here we test the hypothesis that natural-altitude LHTL improves aerobic performance in cross-country skiers, in conjunction with expansion of total hemoglobin mass (Hbmass , carbon-monoxide rebreathing technique) promoted by accelerated erythropoiesis. Following duplicate baseline measurements at sea level over the course of two weeks, nineteen Norwegian cross-country skiers (three women, sixteen men, age 20±2 yr, maximal oxygen uptake (VO2 max) 69±5 ml...
February 22, 2018: Scandinavian Journal of Medicine & Science in Sports
Itamar Nitzan, Cathy Hammerman, Francis B Mimouni, Alona Bin-Nun
OBJECTIVE: To assess the effect of blood transfusions in neonates on partial pressure of oxygen in arterial blood (PaO2 ), arterial hemoglobin oxygen saturation (SaO2 ) and arterial hemoglobin oxygen saturation as measured by pulse oximetry (SpO2 ). STUDY DESIGN: Retrospective study of neonates that received a first blood transfusion while having an indwelling arterial line. We compared PaO2 , SaO2, SpO2, SaO2 /PaO2 ratio and fraction of inspired oxygen (FiO2 ) 12 h before and after blood transfusion...
February 21, 2018: Journal of Perinatology: Official Journal of the California Perinatal Association
Leopoldo López Rosés, Beatriz Álvarez, Abel González Ramírez, Alina López Baz, Alexia Fernández López, Sara Alonso, Andrés Dacal, Eva Martí, Gino Albines, Julieta Fernández Molina, Ángel Lancho
INTRODUCTION: there is a lot of controversy with regard to who should be responsible for sedation during digestive endoscopy, particularly in advanced procedures that require deep sedation such as enteroscopy. The aim of this study was to evaluate the endoscopist-directed sedation viability during single balloon enteroscopy. MATERIAL AND METHOD: this was a prospective, observational study of a series of consecutive enteroscopies. The clinical staff included an endoscopist, scrub nurse and a nurse in charge of monitoring and sedative administration...
February 21, 2018: Revista Española de Enfermedades Digestivas
Courtney E Brennan, Travis K F Hong, Vincent J Wang
OBJECTIVES: The purpose of this study is to determine if stable, well-appearing, drowning patients who have normal age-adjusted vital signs and pulse oximetry upon arrival to the emergency department may be safely discharged without a prolonged observation period. METHODS: Medical records were retrospectively reviewed for drowning patients presenting to a single pediatric emergency department from 1995 to 2014. Data were collected on vital signs and pulse oximetry at presentation, chest x-ray results, disposition and complications for each encounter...
January 31, 2018: American Journal of Emergency Medicine
B K Puri, J A Monro
The non-invasive assessment of chronic tissue hypoxia is difficult. Pulse oximetry only allows the peripheral oxygen saturation to be measured, while the detection of hyperlactataemia needs to take into account the fact that the accumulation of lactic acid may result from several causes other than prolonged tissue hypoxia. Arterial blood oxygen measurement is invasive and often does not give a good indication of the level of tissue hypoxia. Other suggested methods include the use of positron emission tomography, magnetic resonance T2 ∗ relaxation time measurement, photoacoustics and high-frequency ultrasound...
March 2018: Medical Hypotheses
Jacques-Henri Meurgey, Richard Brown, Asia Woroszyl-Chrusciel, Joerg Steier
Background: Obstructive sleep apnoea (OSA) is increasingly common in bariatric patients undergoing sedation during elective surgery. However, it has not been established how significant a contributor it is to peri-operative respiratory complications and mortality. We sought to pre-operatively identify OSA in bariatric patients and record peri-operative complications during and after bariatric surgery. Methods: Data were collected and analysed from June 2014 to March 2017 for 410 bariatric surgery patients referred to the sleep laboratory for pre-operative screening and treatment of OSA...
January 2018: Journal of Thoracic Disease
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