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Pulse oximetry

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https://www.readbyqxmd.com/read/28442982/a-simple-method-to-reduce-pulse-oximetry-interference-by-surgical-optical-navigation-systems
#1
Tetsuhito Hara, Masaaki Satoh, Mamoru Takeuchi
No abstract text is available yet for this article.
April 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/28439886/lifebox-pulse-oximeter-implementation-in-malawi-evaluation-of-educational-outcomes-and-impact-on-oxygen-desaturation-episodes-during-anaesthesia
#2
V Albert, S Mndolo, E M Harrison, E O'Sullivan, I H Wilson, I A Walker
Pulse oximetry is an essential monitor for safe anaesthesia but is often not available in low-income countries. The aim of this study was to determine whether the introduction of pulse oximetry with training was feasible and could reduce the incidence of oxygen desaturation during anaesthesia in a low-income country. Pulse oximeters were donated, with training, to 83 non-physician anaesthetists in Malawi. Knowledge was tested immediately before and after training and at follow-up. Providers were asked to record the lowest peripheral oxygen saturation (SpO2 ) for the first 100 cases anaesthetised after training...
April 24, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28439874/the-effective-introduction-of-lifebox-pulse-oximetry-to-malawi
#3
EDITORIAL
D A Scott, R McDougall
No abstract text is available yet for this article.
April 24, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28414607/cardiac-arrest-in-an-american-cocker-spaniel-during-a-deep-ear-flush-procedure
#4
Alexandra Gould, Fernando L Garcia-Pereira, W Dunbar Gram
CASE DESCRIPTION A 14-year-old spayed female American Cocker Spaniel with bilateral otitis media and no evidence of cardiovascular instability was anesthetized to allow performance of a deep ear flush. CLINICAL FINDINGS Otoscopic examination of the left ear revealed evidence of chronic inflammation; the ear was flushed with sterile saline (0.9% NaCl) solution. Examination of the right ear revealed more severe chronic inflammation than in the left ear, including a ruptured tympanum (timing of rupture unknown)...
May 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28408467/isolated-mild-sleep-associated-hypoventilation-in-children-with-down-syndrome
#5
Wai Wong, Dennis Rosen
INTRODUCTION: Children with Down syndrome (DS) have a high incidence of obstructive sleep apnea (OSA) that is often associated with hypoventilation. Little is known, however, about the prevalence of sleep-associated hypoventilation independent of OSA in these children. METHODS: Retrospective chart review of all children with DS under 18 years of age undergoing polysomnography at a tertiary care paediatric hospital during a 2-year period. Exclusion criteria were as follow: those requiring oxygen or positive-pressure ventilation; with tracheostomy, baseline hypoxia, unrepaired cyanotic heart disease, pulmonary hypertension, and cerebral palsy; or OSA with >5 obstructions/hour...
April 13, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28407366/screening-children-for-pulmonary-arteriovenous-malformations-evaluation-of-18-years-of-experience
#6
Anna E Hosman, Els M de Gussem, Walter A F Balemans, Andréanne Gauthier, Cees J J Westermann, Repke J Snijder, Marco C Post, Johannes J Mager
BACKGROUND: Hereditary Hemorrhagic Telangiectasia (HHT) is an autosomal dominant disease with multi-systemic vascular dysplasia. Early diagnosis through screening is important to prevent serious complications. How best to screen children of affected parents for pulmonary arteriovenous malformations (PAVMs) is often subject to debate. Transthoracic contrast echocardiogram (TTCE) is considered optimal in screening for PAVMs in adults. Guidelines for the screening of children are not specific, reflecting the lack of scientific evidence on the best method to use...
April 13, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28402037/atrial-electrophysiological-and-molecular-remodelling-induced-by-obstructive-sleep-apnoea
#7
Devika Channaveerappa, Jacob C Lux, Kelly L Wormwood, Timothy A Heintz, Meredith McLerie, Jacqueline A Treat, Hannah King, Donia Alnasser, Robert J Goodrow, Glenn Ballard, Robert Decker, Costel C Darie, Brian K Panama
Obstructive sleep apnoea (OSA) affects 9-24% of the adult population. OSA is associated with atrial disease, including atrial enlargement, fibrosis and arrhythmias. Despite the link between OSA and cardiac disease, the molecular changes in the heart which occur with OSA remain elusive. To study OSA-induced cardiac changes, we utilized a recently developed rat model which closely recapitulates the characteristics of OSA. Male Sprague Dawley rats, aged 50-70 days, received surgically implanted tracheal balloons which were inflated to cause transient airway obstructions...
April 12, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28398697/effects-of-targeting-lower-versus-higher-arterial-oxygen-saturations-on-death-or-disability-in-preterm-infants
#8
REVIEW
Lisa M Askie, Brian A Darlow, Peter G Davis, Neil Finer, Ben Stenson, Maximo Vento, Robin Whyte
BACKGROUND: The use of supplemental oxygen in the care of extremely preterm infants has been common practice since the 1940s. Despite this, there is little agreement regarding which oxygen saturation (SpO₂) ranges to target to maximise short- or long-term growth and development, while minimising harms. There are two opposing concerns. Lower oxygen levels (targeting SpO₂ at 90% or less) may impair neurodevelopment or result in death. Higher oxygen levels (targeting SpO₂ greater than 90%) may increase severe retinopathy of prematurity or chronic lung disease...
April 11, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28393795/diagnostic-dilemma-low-oxygen-saturation-during-cardiac-surgery
#9
Suruchi Ladha, Shivani Aggarwal, Usha Kiran, Arindam Choudhary, Poonam Malhotra Kapoor, Ujjwal Kumar Choudhary
We report a case of rheumatic heart disease with severe mitral stenosis having cyanosis and low oxygen saturation on pulse oximetry. The findings of clinical examination and low values on pulse oximetry were inconsistent with the findings of normal partial pressure of oxygen and oxygen saturation on arterial blood gas analysis, leading to diagnostic dilemma. In such clinical scenario, the anesthesiologist should be aware and vigilant about the differential diagnosis of low oxygen saturation on pulse oximetry...
April 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28392627/triarylmethyl-radical-epr-signal-to-noise-at-frequencies-between-250-mhz-and-1-5-ghz-and-dependence-of-relaxation-on-radical-and-salt-concentration-and-on-frequency
#10
Yilin Shi, Richard W Quine, George A Rinard, Laura Buchanan, Sandra S Eaton, Gareth R Eaton, Boris Epel, Simone Wanless Seagle, Howard J Halpern
In vivo oximetry by pulsed electron paramagnetic resonance is based on measurements of changes in electron spin relaxation rates of probe molecules, such as the triarylmethyl radicals. A series of experiments was performed at frequencies between 250 MHz and 1.5 GHz to assist in the selection of an optimum frequency for oximetry. Electron spin relaxation rates for the triarylmethyl radical OX063 as a function of radical concentration, salt concentration, and resonance frequency were measured by electron spin echo 2-pulse decay and 3-pulse inversion recovery in the frequency range of 250 MHz-1...
April 2017: Zeitschrift Für Physikalische Chemie
https://www.readbyqxmd.com/read/28391757/dose-finding-study-comparing-three-treatments-of-remifentanil-in-cats-anesthetized-with-isoflurane-undergoing-ovariohysterectomy
#11
Marcela L Machado, João Henrique N Soares, Maria Alice Kuster de Albuquerque Gress, Douglas Dos Santos E Castro, Kaleizu Teodoro Rosa, Phillipe Bauer de Araujo Doria, Fabio Otero Ascoli
Objectives Three infusion rates of remifentanil were used in isoflurane-anesthetized cats undergoing ovariohysterectomy. The aim of this study was to identify a dosage regimen that would provide optimal anesthetic and surgical conditions, as well as to compare cardiovascular response to surgical stimulation, postoperative analgesia, anesthetic duration and quality of recovery among the tested remifentanil infusion rates. Methods Twenty-seven client-owned, mixed-breed adult healthy female cats were randomized to receive remifentanil 0...
April 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28390625/low-pulse-oximetry-reading-time-for-action-or-reflection
#12
EDITORIAL
Andrew R Tomlinson, Benjamin D Levine, Tony G Babb
No abstract text is available yet for this article.
April 2017: Chest
https://www.readbyqxmd.com/read/28389088/pulmonary-diagnostics
#13
REVIEW
Steven M Donn, Sunil K Sinha
Term infants with respiratory distress may have extremely varied etiologies of their illnesses. These range from anatomical malformations to infectious or inflammatory conditions to genetic, metabolic, or neurological abnormalities. This article reviews the present array of diagnostic studies available to the clinician, including the physical examination, imaging (radiography, computed tomography, magnetic resonance imaging, ultrasound, and nuclear scanning techniques), lung mechanics and function testing, evaluation of gas exchange (blood gases, pulse oximetry, transcutaneous monitoring, and end-tidal carbon monoxide measurements), and anatomical studies (bronchoscopy and lung biopsy)...
April 4, 2017: Seminars in Fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28381429/long-term-effects-of-severe-acute-malnutrition-on-lung-function-in-malawian-children-a-cohort-study
#14
Natasha Lelijveld, Marko Kerac, Andrew Seal, Emmanuel Chimwezi, Jonathan C Wells, Robert S Heyderman, Moffat J Nyirenda, Janet Stocks, Jane Kirkby
Early nutritional insults may increase risk of adult lung disease. We aimed to quantify the impact of severe acute malnutrition (SAM) on spirometric outcomes 7 years post-treatment and explore predictors of impaired lung function.Spirometry and pulse oximetry were assessed in 237 Malawian children (median age: 9.3 years) who had been treated for SAM and compared with sibling and age/sex-matched community controls. Spirometry results were expressed as z-scores based on Global Lung Function Initiative reference data for the African-American population...
April 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28379112/comparison-of-two-sedation-protocols-for-short-electroretinography-in-cats
#15
María J Del Sole, Pablo Nejamkin, Verónica Cavilla, Paula Schaiquevich, Laura Moreno
Objectives The objectives were to compare two different sedative combinations, xylazine-ketamine and dexmedetomidine-ketamine, on the short electroretinography (ERG) protocol and their impact on sedative effect, reversal times and physiological variables in cats. Methods Six healthy spayed female domestic cats were sedated using one of two ketamine-containing protocols: intramuscular xylazine hydrochloride (1 mg/kg) plus ketamine hydrochloride (3 mg/kg) (XK), and dexmedetomidine hydrochloride (5 µg/kg) plus ketamine hydrochloride (3 mg/kg) (DK)...
April 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28375565/emergency-department-vital-signs-and-outcomes-after-discharge
#16
Gelareh Z Gabayan, Michael K Gould, Robert E Weiss, Stephen F Derose, Vicki Y Chiu, Catherine A Sarkisian
OBJECTIVE: Vital signs are critical markers of illness severity in the Emergency Department (ED). Providers need to understand the abnormal vital signs in older adults that are problematic. We hypothesized that in patients age > 65 years discharged from the ED, there are abnormal vital signs that are associated with an admission to an inpatient bed within 7 days of discharge. METHODS: We conducted a retrospective cohort study using data from a regional integrated health system of members age > 65 years during the years 2009-2010...
April 4, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28372678/randomized-trial-of-a-novel-double-lumen-nasopharyngeal-catheter-versus-traditional-nasal-cannula-during-total-intravenous-anesthesia-for-gastrointestinal-procedures
#17
Adam B King, Bret D Alvis, Douglas Hester, Susan Taylor, Michael Higgins
STUDY OBJECTIVE: Patients undergoing general anesthesia routinely experience episodes of hypoxemia. There are multiple causes of procedural oxygen desaturation including upper airway obstruction and central hypoventilation. We hypothesize that oxygen supplementation via nasopharyngeal catheter (NPC) will decrease the number of episodes of hypoxemia as compared to traditional NC oxygen supplementation in patients undergoing general anesthesia provided by an anesthesia provider for gastrointestinal endoscopy procedures...
May 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28367295/development-of-pulmonary-air-leak-in-an-extremely-low-birth-weight-infant-without-mechanical-ventilation-a-case-report
#18
Eun Mi Kim, Ji Yeon Kim
A 34-year-old woman at 25 weeks 3 days was diagnosed with preterm labor and underwent an emergency cesarean section. The neonate did not cry or show any activity. The heart rate was 80 beats/min and the oxygen saturation on pulse oximetry (SpO2) was 77%. Immediately, positive pressure ventilation was delivered by T piece resuscitator, and then anesthesiologist performed endotracheal intubation. The neonate demonstrated severe cyanosis and the SpO2 dropped to 30%. Ventilation was not successful even after intubation, and we found neck crepitus, chest wall distension, and severe cyanosis on physical examination...
April 2017: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/28366333/high-prevalence-of-recurrent-nocturnal-desaturations-in-systemic-al-amyloidosis-a-cross-sectional-pilot-study
#19
Shameem Mahmood, Milind Sovani, Peter Smith, Leena George, Christina C Quarta, Sajitha Sachchithanantham, Marianna Fontana, Carol J Whelan, Helen J Lachmann, Julian D Gillmore, Philip N Hawkins, Ashutosh D Wechalekar
OBJECTIVES: Cardiac involvement and/or macroglossia with soft tissue deposits are risk factors for central sleep apnoea (CSA) and obstructive sleep apnoea (OSA), and common features of systemic AL amyloidosis. Little data exist on the occurrence of sleep-disordered breathing (SDB) or recurrent nocturnal hypoxia in amyloidosis, which this study sought to investigate. METHODS: A total of 72 consecutive patients with systemic amyloidosis (mean age 69 years and mean BMI 25) were evaluated for occurrence of SDB, by overnight continuous pulse oximetry, and completed Epworth Sleepiness Score (ESS) and STOPBANG questionnaires...
April 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28363054/anesthetic-management-of-an-indo-pacific-bottlenose-dolphin-tursiops-aduncus-requiring-surgical-debridement-of-a-tail-abscess
#20
Jun Tamura, Makio Yanagisawa, Yusuke Endo, Keiichi Ueda, Haruka Koga, Yasuharu Izumisawa, Kazuto Yamashita
This report describes the anesthetic management of a 14-yr-old, 160-kg, female Indo-Pacific bottlenose dolphin ( Tursiops aduncus ) that underwent surgical debridement for a refractory subcutaneous abscess twice within a 6-mo interval. The animal was otherwise in good physical condition at each anesthetic procedure. Following premedication with intramuscular midazolam and butorphanol, anesthesia was induced with propofol and maintained with sevoflurane by intubation. During surgery ventilation was controlled...
March 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
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