6,531 results match your criteria dioxide pco2

Comparison of ETCO2 Value and Blood Gas PCO2 Value of Patients Receiving Non-invasive Mechanical Ventilation Treatment in Emergency Department.

SN Compr Clin Med 2021 Apr 27:1-5. Epub 2021 Apr 27.

Department of Emergency Medicine, Mugla Sitki Kocman University Training Research Hospital, Mugla, Turkey.

Capnography is the non-invasive measurement and graphic representation of the partial pressure of CO2 in expiration. Although there are many studies in the literature comparing the partial pressure of carbon dioxide (pCO2) and end-tidal CO2 (ETCO2) values in patients who underwent IMV (invasive mechanical ventilation), there are no studies showing their interchangeable applicability in patients who received NIMV (non-IMV). We aimed to evaluate whether the use of ETCO2 in the treatment process can replace pCO2 use in patients scheduled for NIMV treatment in the emergency department. Read More

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Umbilical Cord Blood Gas Parameters and Apgar Scoring in Assessment of New-Born Dogs Delivered by Cesarean Section.

Animals (Basel) 2021 Mar 4;11(3). Epub 2021 Mar 4.

Wrocław University of Environmental and Life Sciences, Department of Reproduction and Clinic of Farm Animals, 50-366 Wrocław, Poland.

The article presents the results of the clinical evaluation (Apgar scores, AS) and umbilical cord blood gas analysis (UCBGA) obtained from clamped umbilical cords of newborn pups delivered by the elective Caesarean section. The study was planned as a controlled clinical study, the newborns were allocated into one of the groups, I-critical neonates (severe distress, AS ≤ 3), II-weak neonates (moderate distress, AS 4-6) and III-healthy neonates (no distress, AS ≥ 7). The following parameters were evaluated: pH (pH units), carbon dioxide partial pressure (pCO; mmHg), oxygen partial pressure (pO; mmHg), actual bicarbonate (cHCO; mmol/L), total carbon dioxide (cTCO; mmol/L), base excess of extracellular fluid (BE(ecf); mmol/L), base excess of blood (BE(b); mmol/L), oxygen saturation (csO; %), lactate (Lac; mg/dL), hematocrit (Hct; %PCV), hemoglobin (cHgb; g/dL), glucose (Glu; mg/dL), ions (Na, K, Ca, Cl). Read More

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Initial Arterial pCO and Its Course in the First Hours of Extracorporeal Cardiopulmonary Resuscitation Show No Association with Recovery of Consciousness in Humans: A Single-Centre Retrospective Study.

Membranes (Basel) 2021 Mar 15;11(3). Epub 2021 Mar 15.

Department of Intensive Care, Erasmus MC University Medical Center, 3015 GD Rotterdam, The Netherlands.

Background: Cardiac arrest is a severe condition with high mortality rates, especially in the case of prolonged low-flow durations resulting in severe ischaemia and reperfusion injury. Changes in partial carbon dioxide concentration (pCO) may aggravate this injury. Extracorporeal cardiopulmonary resuscitation (ECPR) shortens the low-flow duration and enables close regulation of pCO. Read More

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Response of a continental fault basin to the global OAE1a during the Aptian: Hongmiaozi Basin, Northeast China.

Sci Rep 2021 Mar 31;11(1):7229. Epub 2021 Mar 31.

Key Laboratory of Urban Geology and Underground Space Resources, Shandong Provincial Bureau of Geology and Mineral Resources, Qingdao, 266000, China.

This paper presents new research on a lacustrine anoxic event (LAE). These data include stable carbon isotope (δC), pyrite sulfur isotope (δS), trace element and biomarker ratios from the Hongmiaozi Basin (North China) and unravel the response of continental lakes under the influence of early Aptian extreme climate conditions. According to the stratigraphic chronology (122-118 Ma) and carbon isotope correlations, terrestrial sediment was influenced by the early Aptian Oceanic Anoxic Event (OAE1a). Read More

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Physiologic Improvement in Respiratory Acidosis Using Extracorporeal Co Removal With Hemolung Respiratory Assist System in the Management of Severe Respiratory Failure From Coronavirus Disease 2019.

Crit Care Explor 2021 Mar 9;3(3):e0372. Epub 2021 Mar 9.

Department of Medicine, Louisiana State University Health Sciences Center, Shreveport, LA.

Objectives: About 15% of hospitalized coronavirus disease 2019 patients require ICU admission, and most (80%) of these require invasive mechanical ventilation. Lung-protective ventilation in coronavirus disease 2019 acute respiratory failure may result in severe respiratory acidosis without significant hypoxemia. Low-flow extracorporeal Co removal can facilitate lung-protective ventilation and avoid the adverse effects of severe respiratory acidosis. Read More

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The effect of omega-3 fatty acid supplementation on clinical and biochemical parameters of critically ill patients with COVID-19: a randomized clinical trial.

J Transl Med 2021 03 29;19(1):128. Epub 2021 Mar 29.

Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, USA.

Background: Omega-3 polyunsaturated fatty acids (n3-PUFAs) may exert beneficial effects on the immune system of patients with viral infections. This paper aimed to examine the effect of n3-PUFA supplementation on inflammatory and biochemical markers in critically ill patients with COVID-19.

Methods: A double-blind, randomized clinical trial study was conducted on 128 critically ill patients infected with COVID-19 who were randomly assigned to the intervention (fortified formula with n3-PUFA) (n = 42) and control (n = 86) groups. Read More

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Long-term effects of elevated pCO levels on the expression of Chaoborus-induced defences in Daphnia pulex.

Zoology (Jena) 2021 Feb 28;146:125909. Epub 2021 Feb 28.

Department of Animal Ecology, Evolution & Biodiversity, Ruhr-University Bochum, NDEF, Universitaetsstraße 150, D-44780 Bochum, Germany. Electronic address:

Increased carbon dioxide from fossil fuel combustion results in an enrichment of CO in the global carbon cycle. Recent evidence indicates that rising atmospheric CO impacts the partial pressure of carbon dioxide (pCO) in freshwaters. This affects freshwater biota by disrupting chemical communication between predator and prey. Read More

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February 2021

[Water-air Carbon Dioxide Exchange and Nutritional Controls in a Typical Karst River].

Huan Jing Ke Xue 2021 Feb;42(2):740-748

Environmental Monitoring Center Station of Bijie City, Bijie 551700, China.

To explore water-air carbon dioxide (CO) exchange and its nutritional controls in karst rivers, water sampling and analyses were conducted in the Furong River as a representative karst river system. Regional hydrometeorological characteristics, carbonate system parameters, total organic carbon (TOC), nutrients and their stoichiometric ratios, and the riverine pressure of aqueous CO (CO) and its couplings to trophic status were analyzed. The results showed that gas transfer velocity of CO () varied between 2. Read More

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February 2021

Changes in central venous to arterial carbon dioxide gap (PCO gap) in response to acute changes in ventilation.

BMJ Open Respir Res 2021 Mar;8(1)

Respiratory and Critical Care (Rcare) Group, Aalborg University, Aalborg, Denmark.

Background: Early diagnosis of shock is a predetermining factor for a good prognosis in intensive care. An elevated central venous to arterial PCO difference (∆PCO) over 0.8 kPa (6 mm Hg) is indicative of low blood flow states. Read More

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The dose makes the poison: Non-linear behavioural response to CO-induced aquatic acidification in zebrafish (Danio rerio).

Sci Total Environ 2021 Mar 8;778:146320. Epub 2021 Mar 8.

Marine Biology Research Division, Scripps Institution of Oceanography, University of California San Diego, USA. Electronic address:

CO-induced aquatic acidification is predicted to affect fish neuronal GABA receptors leading to widespread behavioural alterations. However, the large variability in the magnitude and direction of behavioural responses suggests substantial species-specific CO threshold differences, life history and parental acclimation effects, experimental artifacts, or a combination of these factors. As an established model organism, zebrafish (Danio rerio) can be reared under stable conditions for multiple generations, which may help control for some of the variability observed in wild-caught fishes. Read More

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Greenhouse gas emissions (CO and CH) and inorganic carbon behavior in an urban highly polluted tropical coastal lagoon (SE, Brazil).

Environ Sci Pollut Res Int 2021 Mar 16. Epub 2021 Mar 16.

Programa de Geoquímica, Universidade Federal Fluminense, Niterói, RJ, Brazil.

Increasing eutrophication of coastal waters generates disturbances in greenhouse gas (GHG) concentrations and emissions to the atmosphere that are still poorly documented, particularly in the tropics. Here, we investigated the concentrations and diffusive fluxes of carbon dioxide (CO) and methane (CH) in the urban-dominated Jacarepagua Lagoon Complex (JLC) in Southeastern Brazil. This lagoonal complex receives highly polluted freshwater and shows frequent occurrences of anoxia and hypoxia and dense phytoplankton blooms. Read More

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Biochemical and blood gas alterations in buffalo (Bubalus bubalis) whole blood stored in CPDA-1 and CPD/SAG-M bags.

J Vet Emerg Crit Care (San Antonio) 2021 Mar 12;31(2):269-273. Epub 2021 Mar 12.

Laboratory of Animal Health (LARSANA), Federal University of Western Pará (UFOPA), Santarém, Brazil.

Objective: The objective of this study was to evaluate the biochemical and blood gas alterations of whole blood of buffaloes that was stored in citrate-phosphate-dextrose with adenine (CPDA-1) and CPD/SAG-M blood bags for 42 days.

Design: Prospective study.

Interventions: Ten male buffaloes were used in this study. Read More

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Seasonal dependence of false-positives in detection of anomalous pCO using the covariance method with dissolved oxygen in monitoring offshore CO storage sites.

Mar Pollut Bull 2021 May 6;166:112238. Epub 2021 Mar 6.

Geological Carbon dioxide Storage Technology Research Association, Kizugawa 619-0292, Japan; CO(2) Storage Research Group, Research Institute of Innovative Technology for the Earth, Kizugawa 619-0292, Japan. Electronic address:

To elucidate the dependence of frequency of false-positives on the season for the covariance threshold based on partial pressure of CO (pCO) and the percentage dissolved oxygen saturation (DO%) for monitoring offshore CO storage, the deviation of observed pCO from a linear regression of pCO on DO% was investigated. The analyzed data were continuously observed for nearly 1 year in a semi-enclosed bay. Observed pCO tended to be higher than the linear regression in summer and fall, when false-positives would be more frequent. Read More

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Seaweed farms provide refugia from ocean acidification.

Sci Total Environ 2021 Jul 10;776:145192. Epub 2021 Feb 10.

King Abdullah University of Science and Technology (KAUST), Red Sea Research Center (RSRC), Thuwal 23955-6900, Saudi Arabia.

Seaweed farming has been proposed as a strategy for adaptation to ocean acidification, but evidence is largely lacking. Changes of pH and carbon system parameters in surface waters of three seaweed farms along a latitudinal range in China were compared, on the weeks preceding harvesting, with those of the surrounding seawaters. Results confirmed that seaweed farming is efficient in buffering acidification, with Saccharina japonica showing the highest capacity of 0. Read More

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The combined effects of climate change stressors and predatory cues on a mussel species.

Sci Total Environ 2021 Jul 19;776:145916. Epub 2021 Feb 19.

Laboratorio de Fisiología y Genética Marina (FIGEMA), Departamento de Acuicultura, Facultad de Ciencias de Mar, Universidad Católica del Norte, Coquimbo, Chile; Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Coquimbo, Chile.

In order to make adequate projections on the consequences of climate change stressors on marine organisms, it is important to know how impacts of these stressors are affected by the presence of other species. Here we assessed the direct effects of ocean warming (OW) and acidification (OA) along with non-consumptive effects (NCEs) of a predatory crab and/or a predatory snail on the habitat-forming mussel Perumytilus purpuratus. Mussels were exposed for 10-14 weeks to contrasting pCO (500 and 1400 μatm) and temperature (15 and 20 °C) levels, in the presence/absence of cues from one or two predator species. Read More

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Registry on extracorporeal multiple organ support with the advanced organ support (ADVOS) system: 2-year interim analysis.

Medicine (Baltimore) 2021 Feb;100(7):e24653

Universitätsklinikum Hamburg-Eppendorf, Klinik für Intensivmedizin, Hamburg, Deutschland.

Abstract: The objective of this registry is to collect data on real-life treatment conditions for patients for whom multiple organ dialysis with Advanced Organ Support (ADVOS) albumin hemodialysis is indicated.This registry was performed under routine conditions and without any study-specific intervention, diagnostic procedures, or assessments. Data on clinical laboratory tests, health status, liver function, vital signs, and examinations were collected (DRKS-ID: DRKS00017068). Read More

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February 2021

The Microcirculatory Response to Endotoxemia and Resuscitation Is a Marker of Regional Renal Perfusion, Renal Metabolic Stress, and Tubular Injury.

Antioxid Redox Signal 2021 Mar 25. Epub 2021 Mar 25.

Department of Critical Care Medicine, Center for Critical Care Nephrology, The CRISMA Center, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.

We sought to investigate the relationship between macrohemodynamic resuscitation and microcirculatory parameters with the response of microcirculatory flow, tissue-specific parameters of metabolic stress and injury. We hypothesized that early resuscitation based on macrohemodynamic parameters does not prevent the development of organ dysfunction in a porcine model of endotoxemic shock, and that sublingual microcirculatory parameters are associated with markers of tissue metabolic stress and injury. Both resuscitation groups had significant increases in creatinine and neutrophil gelatinase-associated lipocalin as compared with baseline. Read More

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Application of extracorporeal carbon dioxide removal combined with continuous blood purification therapy in ARDS with hypercapnia in patients with critical COVID-19.

Clin Hemorheol Microcirc 2021 Feb 3. Epub 2021 Feb 3.

National Clinical Research Center for Infectious Diseases, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, China.

Introduction: Coronavirus disease-19 (COVID-19) is a new type of epidemic pneumonia caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The population is generally susceptible to COVID-19, which mainly causes lung injury. Some cases may develop severe acute respiratory distress syndrome (ARDS). Read More

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February 2021

Reference intervals for venous blood gas measurement in adults.

Clin Chem Lab Med 2021 Apr 3;59(5):947-954. Epub 2020 Dec 3.

Department of Chemical Pathology, NSW Health Pathology, Prince of Wales Hospital, Sydney, Australia.

Objectives: Venous blood gas (VBG) analysis is becoming a popular alternative to arterial blood gas (ABG) analysis due to reduced risk of complications at phlebotomy and ease of draw. In lack of published data, this study aimed to establish reference intervals (RI) for correct interpretation of VBG results.

Methods: One hundred and 51 adult volunteers (101 females, 50 males, 18-70 years) were enrolled after completion of a health questionnaire. Read More

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Cerebral Blood Flow Deviations in Critically Ill Patients: Potential Insult Contributing to Ischemic and Hyperemic Injury.

Front Med (Lausanne) 2020 20;7:615318. Epub 2021 Jan 20.

Department of Medical Biophysics, Western University, London, ON, Canada.

Ischemic and hyperemic injury have emerged as biologic mechanisms that contribute to cognitive impairment in critically ill patients. Spontaneous deviations in cerebral blood flow (CBF) beyond ischemic and hyperemic thresholds may represent an insult that contributes to this brain injury, especially if they accumulate over time and coincide with impaired autoregulation. We used transcranial Doppler to measure the proportion of time that CBF velocity (CBFv) deviated beyond previously reported ischemic and hyperemic thresholds in a cohort of critically ill patients with respiratory failure and/or shock within 48 h of ICU admission. Read More

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January 2021

Boosted fish abundance associated with Posidonia oceanica meadows in temperate shallow CO vents.

Sci Total Environ 2021 Jun 28;771:145438. Epub 2021 Jan 28.

Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology, Ischia Marine Centre, Punta San Pietro, 80077 Ischia, Naples, Italy; Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, 181 chemin du Lazaret, Villefranche-sur-mer 06230, France.

Ocean acidification (OA) may induce major shifts in the structure and function of coastal marine ecosystems. Studies in volcanic CO vents, where seawater is naturally acidified, have reported an overall simplification of fish assemblages structure, while some primary producers are likely to increase their biomass under elevated concentration of CO. Here we used temperate shallow CO vents located around the coast of Ischia island (Italy) to assess the effects of OA on necto-benthic fish assemblages associated with the foundation seagrass species Posidonia oceanica in the Mediterranean Sea. Read More

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Effect of sodium bicarbonate contribution on energy metabolism during exercise: a systematic review and meta-analysis.

J Int Soc Sports Nutr 2021 Feb 5;18(1):11. Epub 2021 Feb 5.

Centre for Sport Studies, Rey Juan Carlos University, Fuenlabrada, Spain.

Background: The effects of sodium bicarbonate (NaHCO) on anaerobic and aerobic capacity are commonly acknowledged as unclear due to the contrasting evidence thus, the present study analyzes the contribution of NaHCO to energy metabolism during exercise.

Methods: Following a search through five databases, 17 studies were found to meet the inclusion criteria. Meta-analyses of standardized mean differences (SMDs) were performed using a random-effects model to determine the effects of NaHCO supplementation on energy metabolism. Read More

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February 2021

Effect of CO driven ocean acidification on calcification, physiology and ovarian cells of tropical sea urchin A microcosm approach.

Heliyon 2021 Jan 18;7(1):e05970. Epub 2021 Jan 18.

Department of Marine and Coastal Studies, School of Energy, Environment and Natural Resources, Madurai Kamaraj University, Madurai, Tamil Nadu 625 021, India.

In the present study, we depict the structural modification of test minerals, physiological response and ovarian damage in the tropical sea urchin using microcosm CO (Carbon dioxide) perturbation experiment. were exposed to hypercapnic conditions with four different pH levels using CO gas bubbling method that reflects ambient level (pH 8.2) and elevated pCO scenarios (pH 8. Read More

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January 2021

Clinical Utility of Venous Blood Gas Analysis for the Evaluation of Psychogenic Hyperventilation in the Emergency Department.

Cureus 2020 Dec 25;12(12):e12273. Epub 2020 Dec 25.

Division of General Medicine, Center for Community Medicine, Jichi Medical University School of Medicine, Shimotsuke, JPN.

Background Patients with psychogenic hyperventilation frequently visit emergency departments (EDs). Arterial blood gas (ABG) analysis is performed to evaluate patients with dyspnea. This may show respiratory alkalosis in patients with hyperventilation. Read More

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December 2020

Impact of Acid-Base Status on Mortality in Patients with Acute Pesticide Poisoning.

Toxics 2021 Jan 23;9(2). Epub 2021 Jan 23.

Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Cheonan 31151, Korea.

We investigated clinical impacts of various acid-base approaches (physiologic, base excess (BE)-based, and physicochemical) on mortality in patients with acute pesticide intoxication and mutual intercorrelated effects using principal component analysis (PCA). This retrospective study included patients admitted from January 2015 to December 2019 because of pesticide intoxication. We compared parameters assessing the acid-base status between two groups, survivors and non-survivors. Read More

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January 2021

Climate change alters the haemolymph microbiome of oysters.

Mar Pollut Bull 2021 Mar 20;164:111991. Epub 2021 Jan 20.

The University of Sydney, School of Life and Environmental Sciences, Camperdown, New South Wales 2006, Australia.

The wellbeing of marine organisms is connected to their microbiome. Oysters are a vital food source and provide ecological services, yet little is known about how climate change such as ocean acidification and warming will affect their microbiome. We exposed the Sydney rock oyster, Saccostrea glomerata, to orthogonal combinations of temperature (24, 28 °C) and pCO (400 and 1000 μatm) for eight weeks and used amplicon sequencing of the 16S rRNA (V3-V4) gene to characterise the bacterial community in haemolymph. Read More

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Habituation or Normalization? Experiential and Respiratory Recovery From Voluntary Hyperventilation in Treated Versus Untreated Patients With Panic Disorder.

Behav Ther 2021 01 19;52(1):124-135. Epub 2020 Mar 19.

Southern Methodist University. Electronic address:

Psychophysiological theories postulate respiratory dysregulation as a mechanism contributing to panic disorder (PD). Additionally, symptomatic and respiratory recovery from voluntary hyperventilation (HVT-recovery) have been shown to lag in PD and it is unclear if HVT-recovery normalizes with treatment. Thirty-seven panic disorder patients were randomized to hypoventilation therapy (TX, n = 20) or waitlist control (WL, n = 17) (Meuret et al. Read More

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January 2021

Ocean acidification interacts with growth light to suppress CO acquisition efficiency and enhance mitochondrial respiration in a coastal diatom.

Mar Pollut Bull 2021 Feb 15;163:112008. Epub 2021 Jan 15.

State Key Laboratory of Marine Environmental Science & College of Ocean and Earth Sciences, Xiamen University, Xiamen, China; Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China. Electronic address:

Diatom responses to ocean acidification have been documented with variable and controversial results. We grew the coastal diatom Thalassiosira weissflogii under 410 (LC, pH 8.13) vs 1000 μatm (HC, pH 7. Read More

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February 2021

Effect of lung recruitment on blood gas index, hemodynamics, lung compliance, and rehabilitation index in children with acute respiratory distress syndrome.

Transl Pediatr 2020 Dec;9(6):795-801

Department of Coronary Heart Disease of Zaozhuang Municipal Hospital, Zaozhuang, China.

Background: Acute respiratory distress syndrome (ARDS) is a common pediatric disease, with an increasing mortality rate in recent years. This study aims to explore the effects of lung recruitment on blood gas indexes, hemodynamics, lung compliance, and rehabilitation index in children with ARDS.

Methods: Seventy children with ARDS admitted to our hospital from December 2017 to December 2018 were selected as the study subjects, and were divided into a study group (35 cases, treated with lung recruitment strategy) and a control group (35 cases, treated with routine therapy). Read More

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December 2020

Transcutaneous PCO for Exercise Gas Exchange Efficiency in Chronic Obstructive Pulmonary Disease.

COPD 2021 Feb 17;18(1):16-25. Epub 2021 Jan 17.

The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA, USA.

Gas exchange inefficiency and dynamic hyperinflation contributes to exercise limitation in chronic obstructive pulmonary disease (COPD). It is also characterized by an elevated fraction of physiological dead space (V/V). Noninvasive methods for accurate V/V assessment during exercise in patients are lacking. Read More

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February 2021