Read by QxMD icon Read

Co oximeter

O O Olujimi, G R E E Ana, O O Ogunseye, V T Fabunmi
Charcoal production is often accompanied with gaseous and particulate emission into the atmosphere and occupationally exposed workers could be affected. This cross sectional comparative study was carried out to assess the levels of carbon monoxide (CO), carbon dioxide (CO2), sulphur dioxide (SO2), nitrogen dioxide (NO2) and particulate matter (PM2.5) generated during the phases of charcoal production and their relationship with certain biomarkers among charcoal workers (subjects) and non-charcoal workers (controls) such as carboxyhaemoglobin (COHb), forced expiratory volume in the first second of expiration (FEV1), peak expiratory flow rate (PEFR) and body mass index (BMI) in Igbo-Ora, Oyo State and Alabata, Ogun State, which are two of the major hubs of charcoal production in South Western Nigeria...
2016: SpringerPlus
Jing Zhou, Yi Han
OBJECTIVES: To analyze the ability of pleth variability index (PVI) and respiratory system compliance (RSC) on evaluating the hemodynamic and respiratory effects of positive end expiratory pressure (PEEP), then to direct PEEP settings in mechanically ventilated critical patients. METHODS: We studied 22 mechanically ventilated critical patients in the intensive care unit. Patients were monitored with classical monitor and a pulse co-oximeter, with pulse sensors attached to patients' index fingers...
2016: SpringerPlus
Elspeth Hulse, Fathima Shihana, Nicholas A Buckley
INTRODUCTION: In Asia methemoglobinemia (MetHb) is commonly caused through self-poisoning with the pesticide propranil. MetHb can cause hypoxia, coma and death, but usually responds to methylene blue. It is therefore vital to have accurate methods to measure blood MetHb to guide appropriate treatments. The gold standard to measure MetHb utilizes a spectrophotometer, but recent bedside tests have been developed e.g., pulse co-oximeter probe and blood color chart. METHODS: Nine propanil poisoned patients had data collected from hospitals in Sri Lanka during 2008...
November 2016: Clinical Toxicology
Elizabeth Bridges, Jennifer J Hatzfeld
OBJECTIVE: To describe the accuracy and precision of noninvasive hemoglobin measurement (SpHb) compared with laboratory or point-of-care Hb, and SpHb ability to trend in seriously injured casualties. METHODS: Observational study in a convenience sample of combat casualties undergoing resuscitation at two US military trauma hospitals in Afghanistan. SpHb was obtained using the Masimo Rainbow SET (Probe Rev E/Radical-7 Pulse CO-Oximeter v Clinically indicated Hb was analyzed with a Coulter or iStat and compared with simultaneous SpHb values...
September 2016: Shock
Turgut Deniz, Hayati Kandis, Oguz Eroglu, Harun Gunes, Meral Saygun, Ismail Hamdi Kara
Carbon monoxide (CO) is a colourless and odourless gas appearing as a result of incomplete combustion of carbon-containing fuels. Many domestic or occupational poisonings are caused by CO exposure. Malfunctioning heating systems, improperly ventilated motor vehicles, generators, grills, stoves and residential fires may be listed in the common sources of CO exposure. The aim of this study was to emphasize the significance of early diagnosis of CO poisoning with non-invasive measurement of CO levels of the patients with non-specific symptoms using a pulse oximeter device in the triage...
August 4, 2016: Toxicology and Industrial Health
Mark L Ryan, Angela C Maxwell, Lisa Manning, Jonathan D Jacobs, Marielena Bachier-Rodriguez, Alexander Feliz, Regan F Williams
INTRODUCTION: Hemorrhage is a major cause of preventable death secondary to traumatic injury. Diagnosis often requires multiple blood draws, which are psychologically stressful in pediatric patients. The Pronto device is a pulse co-oximeter that measures the total hemoglobin level using multiple wavelengths of light. The purpose of this study was to evaluate the accuracy of the noninvasive hemoglobin measurements relative to current invasive and point of care testing methods in pediatric trauma patients...
July 6, 2016: Journal of Trauma and Acute Care Surgery
Neil Hartman, Hongfei Zhou, Jinzhe Mao, Daniel Mans, Michael Boyne, Vikram Patel, Thomas Colatsky
1. Topical anesthesia with benzocaine or lidocaine occasionally causes methemoglobinemia, an uncommon but potentially fatal disorder where the blood has a reduced ability to transport oxygen. Previous in vitro studies using human whole blood have shown that benzocaine causes more methemoglobin (MetHb) formation than lidocaine, and that both compounds require metabolic transformation to form the MetHb producing species. In the current investigation, the active species of benzocaine forming the MetHb was investigated...
June 20, 2016: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
P H Huang, B F Shih, Y-F Tsai, P C H Chung, F C Liu, H P Yu, W C Lee, C J Chang, C C Lin
BACKGROUND: Shift in large fluid volumes and massive blood loss during liver transplantation frequently leads to rapid changes in hemoglobin (Hb) concentration; thus, to ensure adequate tissue oxygenation, accurate and rapid determination of Hb concentration is essential in transplant recipients. The Radical-7 Pulse CO-Oximeter provides a noninvasive and continuous way to monitor Hb concentration (SpHb) in real time and is an ideal candidate for use during liver transplantation. In this study, we assessed the relationship between SpHb and total Hb (tHb) obtained from arterial blood samples during surgery...
May 2016: Transplantation Proceedings
H-C Lee, Y-F Tsai, H-I Tsai, P C-H Chung, H-P Yu, W-C Lee, C-C Lin
BACKGROUND: Accurate estimation of cardiac preload during liver transplantation is essential. The right ventricular end-diastolic volume index (RVEDVI) is recognized as a good preload indicator in patients undergoing liver transplantation. Recently, dynamic variation parameters including pleth variability index (PVI) have been used as predictors of fluid responsiveness. However, the correlation between PVI and preload status has not been well studied. We evaluated the relationship between PVI and RVEDVI during liver transplantation...
May 2016: Transplantation Proceedings
Chun-Yu Wu, Ya-Jung Cheng, Ying-Ju Liu, Tsung-Ta Wu, Chiang-Ting Chien, Kuang-Cheng Chan
BACKGROUND: Predicting whether a fluid challenge will elicit 'fluid responsiveness' in stroke volume (SV) and arterial pressure is crucial for managing hypovolaemia and hypotension. Pulse pressure variation (PPV), SV variation (SVV) and the plethysmographic variability index (PVI) have been shown to predict SV fluid responsiveness, and the PPV/SVV ratio has been shown to predict arterial pressure fluid responsiveness under various conditions. However, these variables have not been investigated in liver cirrhosis patients...
September 2016: European Journal of Anaesthesiology
João Cordeiro da Costa, Paula Faustino, Ricardo Lima, Inês Ladeira, Miguel Guimarães
BACKGROUND: Pulse oximetry has become an essential tool in clinical practice. With patient self-management becoming more prevalent, pulse oximetry self-monitoring has the potential to become common practice in the near future. This study sought to compare the accuracy of two pulse oximeters, a high-quality standard pulse oximeter and an inexpensive pocket pulse oximeter, and to compare both devices with arterial blood co-oximetry oxygen saturation. METHODS: A total of 95 patients (35...
May 2016: Biomedical Instrumentation & Technology
Bonnie J Gatson, Fernando L Garcia-Pereira, Michelle James, Shelia Carrera-Justiz, Daniel D Lewis
OBJECTIVES: To evaluate perfusion index (PI) as a determinant of regional nerve block success following sciatic nerve blockade with bupivacaine in dogs undergoing stifle surgery. STUDY DESIGN: Prospective clinical trial. ANIMALS: Ten adult dogs, aged 5.6 ± 2.6 years and weighing 36.9 ± 16.8 kg, undergoing a tibial plateau leveling osteotomy. METHODS: Dogs were premedicated with acepromazine (0.03 mg kg(-1) ) and hydromorphone (0...
November 2016: Veterinary Anaesthesia and Analgesia
Nicole Harlan, Lindell K Weaver, Kayla Deru
Newer pulse CO-oximeters provide a non-invasive and quick means of measuring oxyhemoglobin, carboxyhemoglobin and methemoglobin. Clubbing has been reported to cause inaccuracy in pulse oximeters. We present a case of inaccurate carboxy-hemoglobin measurement by pulse CO-oximetry due to digital clubbing. An 18-year-old man with a history of cystic fibrosis presented after a suicide attempt by inhalation of exhaust. At the initial emergency department evaluation, his blood carboxyhemoglobin was 33%. He was intubated, placed on 100% oxygen and transferred to our facility...
January 2016: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
Peter Szmuk, Jeffrey W Steiner, Patrick N Olomu, Roxana P Ploski, Daniel I Sessler, Tiberiu Ezri
BACKGROUND: Pulse oximetry provides no indication of downward trends in PaO2 until saturation begins to decrease. The Oxygen Reserve Index (ORI) is a novel pulse oximeter-based nondimensional index that ranges from 1 to 0 as PaO2 decreases from about 200 to 80 mmHg and is measured by optically detecting changes in SvO2 after SaO2 saturates to the maximum. The authors tested the hypothesis that the ORI provides a clinically important warning of impending desaturation in pediatric patients during induction of anesthesia...
April 2016: Anesthesiology
Bronwyn U Harris, Danton S Char, Jeffrey A Feinstein, Archana Verma, Stephen C Shiboski, Chandra Ramamoorthy
OBJECTIVES: Prior studies have shown inaccuracies in pulse oximetry readings at saturations less than 85%; however, no large studies have evaluated new sensors marketed for these low saturations. This study's purpose was to evaluate two sensors with claims of improved accuracy in children with saturations less than 85%. DESIGN: Prospective observational study. SETTING: Single institution; cardiac catheterization laboratory, and operating room...
April 2016: Pediatric Critical Care Medicine
Francisco Pastor Pascual, Julio Fontoba Ferrándiz, María Carmen Gil Sanchez, Francisco Ponce Lorenzo, Carlos Botella Estrella
BACKGROUND: Varenicline is an effective smoking cessation therapy in clinical trials. However, its effectiveness might vary in a real world setting and its long term effectiveness (2-year) has not been reported yet. OBJECTIVE: The objective was ascertaining the effectiveness of varenicline in the treatment of tobacco consumption in Primary Care settings. METHODS: Observational, multicenter, retrospective study using medical records of smokers followed for 24 months...
January 28, 2016: Substance Use & Misuse
Werner Baulig, Burkhardt Seifert, Donat R Spahn, Oliver M Theusinger
The Masimo Radical-7 Pulse CO-Oximeter (Masimo Corp., USA) non-invasively computes hemoglobin concentration (SpHb). SpHb was compared to Co-Oximeter readings (CoOxHb) of arterial samples in surgery patients of the emergency department. Forty-six patients were enrolled. The Masimo R1 25L (revision F and G) adult adhesive sensor was attached to the ring finger of the arterially cannulated hand. Before start, every 30 min during surgery and in the case of severe bleeding SpHb and CoOxHb values were documented...
December 19, 2015: Journal of Clinical Monitoring and Computing
Andreas Petropoulos, Doris Ehringer-Schetitska, Peter Fritsch, Eero Jokinen, Robert Dalla Pozza, Renate Oberhoffer
OBJECTIVE: The burden of cardiac disease in childhood is unknown. It will be a sum of 1% of living births in the general population, suffering from Congenital Heart Disease (CHD) + approximately 2.5% of the general population suffering from bicuspid aortic valve diseases + an unknown higher prevalence of acquired diseases. Cardiomyopathies, arrhythmias - sudden cardiac death (SCD), rheumatic heard disease, hypertension and accelerating atherosclerosis are among the most frequent. Adding on, genetic syndromes including cardiac defects, endocarditis and myocarditis we can address a large pediatric population worldwide, suffering from heart disease...
September 2015: Hellenic Journal of Nuclear Medicine
Michael Busch
OBJECTIVE: Exposure to exhaust fumes from combustion engines can lead to carbon monoxide (CO) poisoning. Sea King Rescue helicopter crews are frequently subjected to engine exhaust. This study investigates the extent of CO exposure and potential for intoxication for flight crews during standard operational training procedures. METHODS: Over a 2-week period, rescue helicopter flight crews were monitored for exposure to exhaust fumes and clinical symptoms of CO intoxication by means of a written survey and measurements of carboxyhemoglobin saturation (SpCO) with a handheld pulse CO oximeter (RAD-57; Masimo, Irvine, CA)...
November 2015: Air Medical Journal
Laura Lahaye, Mario Grasso, Jeffrey Green, C J Biddle
Demands associated with the Trendelenburg position (TP) are well known yet there is little attention given to regional cerebral tissue O2 saturation (SctO2) in those undergoing robotic surgery in the TP with CO2 insufflation (C-INSF). This is the first study to report on SctO2 in a wide range of patients undergoing lengthy TP and robotic surgery. We measured SctO2 during robotic surgery in patients in the TP with C-INSF, as well as a control robotic thyroid surgery group who were supine with no C-INSF. We recorded relevant variables and periods of cerebral desaturation (CD)...
March 2015: Journal of Robotic Surgery
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"