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Relevant bibliographies by topics / Respiratory Gas Analysis

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Academic literature on the topic 'Respiratory Gas Analysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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Journal articles on the topic "Respiratory Gas Analysis"

1

Langton, J. A., and A. Hutton. "Respiratory gas analysis." Continuing Education in Anaesthesia Critical Care & Pain 9, no. 1 (February 2009): 19–23. http://dx.doi.org/10.1093/bjaceaccp/mkn048.

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Jaffe, Michael B. "Respiratory Gas Analysis—Technical Aspects." Anesthesia & Analgesia 126, no. 3 (March 2018): 839–45. http://dx.doi.org/10.1213/ane.0000000000002384.

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Hamilton, Lyle H. "GAS CHROMATOGRAPHY FOR RESPIRATORY AND BLOOD GAS ANALYSIS*." Annals of the New York Academy of Sciences 102, no. 1 (December 15, 2006): 15–28. http://dx.doi.org/10.1111/j.1749-6632.1962.tb13622.x.

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VanWagenen, Richard, Dwayne R. Westenskow, and Robert Benner. "RESPIRATORY GAS ANALYSIS BY RAMAN SCATTERING." Anesthesiology 63, Supplement (September 1985): A163. http://dx.doi.org/10.1097/00000542-198509001-00163.

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Fraser, R. B., and S. Z. Turney. "New method of respiratory gas analysis: light spectrometer." Journal of Applied Physiology 59, no. 3 (September 1, 1985): 1001–7. http://dx.doi.org/10.1152/jappl.1985.59.3.1001.

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A multigas concentration analyzer particularly suited for respiratory gas analysis has been developed using a new principle based on the measurement of the intensity of light emitted by excited atoms or ions in a direct current glow discharge. This glow discharge spectral emission gas analyzer (GDSEA), or light spectrometer, simultaneously measures O2, N2, CO2, He, and N2O gas concentrations with a 0–90% response time of 100 ms and a sample rate of less than 20 ml/min in a short gas sample line configuration. Mole accuracy and resolution of the GDSEA using a short sample line were determined in the laboratory to be +/- 0.15 to +/- 0.7% and 0.02–0.05%, respectively. In the clinical setting a comparative evaluation was made with a mass spectrometer in a long sample line, computerized, multibed, respiratory monitoring system. Results indicate a close agreement between the two instruments with differences in mixed inspiratory or expiratory O2 and CO2 concentrations of less than 2% and of derived variables, such as O2 consumption, CO2 production, and respiratory exchange ratio, of less than 5%.

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Kim, Jinkyu, Masaaki Kawahashi, and Hiroyuki Hirahara. "Analysis of airway gas dynamics in a micro-channel of bronchiole model(3C1 Cardiopulmonary & Respiratory Mechanics)." Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics 2007.3 (2007): S202. http://dx.doi.org/10.1299/jsmeapbio.2007.3.s202.

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Tompuri, Tuomo T., Niina Lintu, Sonja Soininen, Tomi Laitinen, and Timo Antero Lakka. "Comparison between parameters from maximal cycle ergometer test first without respiratory gas analysis and thereafter with respiratory gas analysis among healthy prepubertal children." Applied Physiology, Nutrition, and Metabolism 41, no. 6 (June 2016): 624–30. http://dx.doi.org/10.1139/apnm-2015-0355.

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It is important to distinguish true and clinically relevant changes and methodological noise from measure to measure. In the clinical practice, maximal cycle ergometer tests are typically performed first without respiratory gas analysis and thereafter, if needed, with respiratory gas analysis. Therefore, we report a comparison of parameters from maximal cycle ergometer exercise tests that were done first without respiratory gas analysis and thereafter with it in 38 prepubertal and healthy children (20 girls, 18 boys). The Bland–Altman method was used to assess agreement in maximal workload (WMAX), heart rate (HR), and systolic blood pressure (SBP) between rest and maximum. Girls achieved higher WMAX in the exercise tests with respiratory gas analysis compared with exercise tests without respiratory gas analysis (p = 0.016), whereas WMAX was similar in the tests among boys. Maximal HR (proportional offset, –1%; coefficients of variation, 3.3%) and highest SBP (proportional offset, 3%; coefficients of variation, 10.6%) were similar in the tests among children. Precision and agreement for HR improved and precision for SBP worsened with increasing exercise intensity. Heteroscedasticity was not observed for WMAX, HR, or SBP. We conclude that maximal cycle ergometer tests without and with respiratory gas analysis can be used consecutively because measurement of respiratory gases did not impair performance or have a significant effect on the maximality of the exercise tests. Our results suggest that similar references can be used for children who accept or refuse using a mask during a maximal exercise test.

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Turner, M. J., and S. Culbert. "Apparatus to measure the step and frequency responses of gas analysis instruments (respiratory gas analysis)." Physiological Measurement 14, no. 3 (August 1, 1993): 317–26. http://dx.doi.org/10.1088/0967-3334/14/3/010.

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de JONGSTE, JOHAN C, and KJELL ALVING. "Gas Analysis." American Journal of Respiratory and Critical Care Medicine 162, supplement_1 (August 2000): S23—S27. http://dx.doi.org/10.1164/ajrccm.162.supplement_1.maic-6.

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Hahn, G., and M. Meyer. "Sample-hold technique for analysis of respiratory gas composition at high breathing frequencies." Journal of Applied Physiology 64, no. 6 (June 1, 1988): 2684–91. http://dx.doi.org/10.1152/jappl.1988.64.6.2684.

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A gas sampling device is described for continuous monitoring of respiratory gas composition that is applicable to experimental conditions when the breathing frequency is very high (greater than 2 Hz) and the response time of conventional gas analyzers becomes a critical limiting factor. The system utilizes the principle of discontinuous gas collection at any selected point of the respiratory cycle facilitated by ultraspeed piezoelectric valves and includes provision for sample-hold characteristics. Two distinct modes of operation are supported. In phase-locked mode gas sampling is synchronous with breathing frequency. In scanning mode gas collection is asynchronous with breathing frequency. Phase-locked mode may be used for continuous monitoring of end-tidal gas concentrations, whereas scanning mode is intended for assessing the gas concentration profile throughout the respiratory cycle. The system may be applied to steady breathing encountered in mechanical ventilation at high frequency or during quasi-steady breathing observed in panting animals. Combined with a respiratory mass spectrometer, the system has been used for measurement of gas concentrations in alveolar gas mixtures at breathing frequencies ranging from 3 to 30 Hz that were otherwise not amenable to rapid measuring techniques.

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Dissertations / Theses on the topic "Respiratory Gas Analysis"

1

Kaufmann, Andreas Franz. "Development of a fast response carbon monoxide sensor for respiratory gas analysis." Thesis, University College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252412.

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Guallar-Hoyas, Cristina. "Prospecting for markers of disease in respiratory diseases." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12415.

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Asthma, current detection methods and metabolites proposed as asthma markers are described. The limitation of the disease diagnosis is outlined and metabolomics is introduced as the approach carried out within this research with the potential to measure the group metabolites that characterise the metabolic responses of a biological system to a specific disease. Chemistry underlying breathing, current breath collection and analytical techniques are described as well as detection and data processing technology associated within our research. A work-flow for the collection, analysis and processing of exhaled breath samples in respiratory diseases is described. The non-invasive sampling method allows collection of exhaled breath samples on children and adults without experiencing any discomfort. The analysis of exhaled breath samples using thermal desorption gas chromatography mass spectrometry outlines the use of retention index for the alignment of VOCs retention time shifting over time. This methodology enables the creation of a breath matrix for multivariate analysis data processing where each VOC is defined by retention index and most intense fragments of the mass spectrum. This methodology is tested in two cohorts of participants: paediatric asthma and severe asthmatic participants whose breath profiles are compared against healthy controls and within the two asthmatic phenotypes to prospect the markers that differentiate between the different groups. Eight candidate markers are identified to discriminate between asthmatic children and healthy children and seven markers between asthmatics undergoing therapy and healthy controls. The database from severe and paediatric asthma is compared, establishing seven non-age related markers between the two groups. A new interface is developed for the faster analysis of exhaled breath samples using thermal desorption ion mobility mass spectrometry. The interface front end has been modified and optimised to achieve the best sensitivity and resolution of VOCs in exhaled breath. A preliminary study carried out in a small cohort of volunteers shows the feasibility of the technique for the differentiation of asthmatic and healthy adults.

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Rukskul, Pataravit. "Analysis of different respiratory and blood gas parameters to optimize brain tissue oxygen tension (PtiO2) in patients with acute subarachnoid hemorrhage." [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=970018304.

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Fujitani, Mina. "Studies on the regulation of fat metabolism during endurance exercise." Kyoto University, 2015. http://hdl.handle.net/2433/199366.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(農学)
甲第19042号
農博第2120号
新制||農||1032(附属図書館)
学位論文||H27||N4924(農学部図書室)
31993
京都大学大学院農学研究科食品生物科学専攻
(主査)教授伏木亨, 教授保川清, 教授金本龍平
学位規則第4条第1項該当

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Doel, Thomas MacArthur Winter. "Developing clinical measures of lung function in COPD patients using medical imaging and computational modelling." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:34bbf6fd-ea01-42a2-8e99-d1e4a3c765b7.

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Chronic obstructive pulmonary disease (COPD) describes a range of lung conditions including emphysema, chronic bronchitis and small airways disease. While COPD is a major cause of death and debilitating illness, current clinical assessment methods are inadequate: they are a poor predictor of patient outcome and insensitive to mild disease. A new imaging technology, hyperpolarised xenon MRI, offers the hope of improved diagnostic techniques, based on regional measurements using functional imaging. There is a need for quantitative analysis techniques to assist in the interpretation of these images. The aim of this work is to develop these techniques as part of a clinical trial into hyperpolarised xenon MRI. In this thesis we develop a fully automated pipeline for deriving regional measurements of lung function, making use of the multiple imaging modalities available from the trial. The core of our pipeline is a novel method for automatically segmenting the pulmonary lobes from CT data. This method combines a Hessian-based filter for detecting pulmonary fissures with anatomical cues from segmented lungs, airways and pulmonary vessels. The pipeline also includes methods for segmenting the lungs from CT and MRI data, and the airways from CT data. We apply this lobar map to the xenon MRI data using a multi-modal image registration technique based on automatically segmented lung boundaries, using proton MRI as an intermediate stage. We demonstrate our pipeline by deriving lobar measurements of ventilated volumes and diffusion from hyperpolarised xenon MRI data. In future work, we will use the trial data to further validate the pipeline and investigate the potential of xenon MRI in the clinical assessment of COPD. We also demonstrate how our work can be extended to build personalised computational models of the lung, which can be used to gain insights into the mechanisms of lung disease.

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Macleod, Kenneth Alexander. "Validation and application of a photo-acoustic gas analyser for multiple breath inert gas washout in children." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/33295.

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Multiple breath washout (MBW) of inert gas for assessment of airway disease in children is an emerging technique. In many studies Lung Clearance Index (LCI), derived from multiple breath washout of SF6, is more able to detect early or mild lung disease than standard lung function measurements. It is also able to detect very early lung disease in progressive conditions such as Cystic Fibrosis (CF). Where infants born with this condition were thought to have minimal lung disease activity, LCI is higher in these children than healthy controls. Lack of available commercial devices has hampered expansion of this technique to centres other than specialist research teams. Innocor (Innovision, Dk), a photoacoustic mass spectrometer capable of performing multiple breath washout, was adapted within this research group for use in adults. This thesis describes the setup, adaptation and validation of Innocor for use in children. In 4 studies, healthy controls, children with asthma and children with CF were recruited to perform MBW. In one study, 29 healthy controls and 31 children with asthma were recruited. Healthy controls performed 1 set of washouts, establishing a normative range. Children with asthma performed measurements before and after bronchodilator. Results showed increased LCI in children with asthma even though they were clinically stable as defined by symptoms. LCI stayed high even following bronchodilator suggesting evidence of residual airway disease in well controlled asthmatics despite adequate symptom control. To investigate short term variability of MBW measurements, two other studies recruited 18 children with CF in each. They performed measurements before and after standard physiotherapy manoeuvres and during sitting and lying posture. LCI did not change significantly after airway clearance physiotherapy, compared with children who did no intervention. Variability was high in both groups however suggesting CF lung disease is a complex interaction of changing ventilation in adjacent lung units. Lying posture induced greater changes in lung function in children with CF than controls. LCI appears to be more sensitive to this change than standard lung function measurements (spirometry). In another study 32 children with CF were recruited to perform serial lung function measurements over 18 months. These were data collected as part of the UK Cystic Fibrosis Gene Therapy Consortium (CFGTC) clinical studies in preparation for planned gene therapy trials. LCI appears comparable to FEV1 and may be able to detect another aspect of airway disease. All initial studies were performed in older children (>5yrs). The basic Innocor device is unsuitable for testing of younger patients with low breath volume and high respiratory rate. In-house adaptations following detailed lung model experimentation led to a faster analyser response, potentially capable of MBW in younger children. The second part of this thesis concerns lab experiments and an in-vivo comparison with the current gold-standard MBW device, a respiratory mass spectrometer. 16 healthy volunteers and 9 children with CF were recruited. Ages ranged from 0.4 yrs to 49 yrs. Innocor values for lung volume estimation compared favourably with the mass spectrometer. No evidence of bias caused by Innocor error was seen, however intra-test variability was rather high, reducing the precision of the results. These studies indicate Innocor is a robust, simple to use device with potential as a commercial lung function system. Modifications were made to make it suitable for use in all ages. Further development will need to focus on the patient interface and software, which is the domain of the manufacturers. The experiments contained in this thesis are therefore of interest to the wider respiratory research community as well as manufacturers of MBW devices.

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Schirrmacher, Bianca. "Vergleichende Untersuchung zur Trainingswirksamkeit eines an der Bewegungsgeschwindigkeit orientierten Trainings der Beinmuskulatur." Doctoral thesis, 2013. http://hdl.handle.net/11858/00-1735-0000-0022-5D31-9.

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[Verfasser], Pataravit Rukskul. "Analysis of different respiratory and blood gas parameters to optimize brain tissue oxygen tension (PtiO2) in patients with acute subarachnoid hemorrhage / Pataravit Rukskul." 2003. http://d-nb.info/970018304/34.

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Brisville, Anne-Claire. "Évaluation, surveillance et soutien de la fonction respiratoire chez des veaux clonés en période néonatale." Thèse, 2010. http://hdl.handle.net/1866/5287.

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Une morbidité et une mortalité néonatales élevées limitent l’efficacité du clonage somatique chez les bovins. Des malformations myoarthrosquelettiques, des anomalies ombilicales, des problèmes respiratoires et de la faiblesse ont été fréquemment observés chez les veaux clonés nouveaux-nés. Cette étude rétrospective porte sur 31 veaux clonés. Ses objectifs étaient de décrire les problèmes respiratoires rencontrés, leur évolution au cours du temps, les traitements instaurés pour soutenir la fonction respiratoire et la réponse aux traitements. Vingt-deux veaux ont souffert de problèmes respiratoires. La tachypnée, l’hypoxémie et l’hypercapnie sont les signes cliniques les plus fréquemment observés. L’analyse des gaz sanguins a été un outil essentiel dans le diagnostic et le suivi de la fonction respiratoire. La radiographie a permis une évaluation globale du poumon. L’oxygénothérapie intranasale et la ventilation mécanique ont permis de limiter la mortalité due à une insuffisance respiratoire à 18% (4/22). Cette étude a permis d’émettre des hypothèses quant à l’origine des problèmes respiratoires chez les veaux clonés. Plus d’une maladie semblent affecter les veaux clonés. La déficience en surfactant, l’hypertension pulmonaire persistante et le retard de résorption du fluide pulmonaire figurent parmi les entités pathologiques les plus probables.
High morbidity and mortality decrease the efficiency of somatic cell nuclear transfer. The main abnormalities observed in neonatal cloned calves are skeletal malformations, enlarged umbilical vessels, respiratory problems and weakness. This retrospective study involved 31 cloned calves. The objectives of this study were to describe the respiratory problems suffered by cloned calves during neonatal period, to assess their evolution, and to determine the possible causes. Secondary objectives were to describe the techniques used to assess and support respiratory function and the calves’ response. Respiratory problems affected 22 calves. Tachypnea, hypoxemia and hypercapnia were the most frequently observed signs. Arterial blood gas analyses and chest radiographs were precious to identify and assess respiratory problems. Intranasal oxygen and mechanical ventilation were efficient to limit mortality due to respiratory failure to 18% (4/22). It is plausible that more than one disease affect cloned calves. Delayed resorption of pulmonary fluid, persistent pulmonary hypertension and surfactant deficiency, or a combination of these factors, are among the most probable pathological entities.

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Books on the topic "Respiratory Gas Analysis"

1

A, Paulus David, Hayes Thomas J, and Gravenstein J. S, eds. Gas monitoring in clinical practice. 2nd ed. Boston: Butterworth-Heinemann, 1994.

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Shapiro, Barry A. Clinical application of blood gases. 5th ed. Chicago, IL: Mosby-Year Book, 1993.

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Shapiro, Barry A. Clinical application of blood gases. 5th ed. St. Louis: Mosby, 1994.

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Stacey, Victoria. Respiratory. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199592777.003.0010.

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Asthma - Chronic obstructive pulmonary disease (COPD) - Non-invasive ventilation - Venous thromboembolism - Pneumonia - Spontaneous pneumothorax - Respiratory failure and oxygen therapy - Arterial blood gas analysis - SAQs

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Garby, Lars. The Respiratory Functions of Blood. Springer, 2012.

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Joynt, Gavin M., and Gordon Y. S. Choi. Blood gas analysis in the critically ill. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0072.

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Arterial blood gases allow the assessment of patient oxygenation, ventilation, and acid-base status. Blood gas machines directly measure pH, and the partial pressures of carbon dioxide (PaCO2) and oxygen (PaO2) dissolved in arterial blood. Oxygenation is assessed by measuring PaO2 and arterial blood oxygen saturation (SaO2) in the context of the inspired oxygen and haemoglobin concentration, and the oxyhaemoglobin dissociation curve. Causes of arterial hypoxaemia may often be elucidated by determining the alveolar–arterial oxygen gradient. Ventilation is assessed by measuring the PaCO2 in the context of systemic acid-base balance. A rise in PaCO2 indicates alveolar hypoventilation, while a decrease indicates alveolar hyperventilation. Given the requirement to maintain a normal pH, functioning homeostatic mechanisms result in metabolic acidosis, triggering a compensatory hyperventilation, while metabolic alkalosis triggers a compensatory reduction in ventilation. Similarly, when primary alveolar hypoventilation generates a respiratory acidosis, it results in a compensatory increase in serum bicarbonate that is achieved in part by kidney bicarbonate retention. In the same way, respiratory alkalosis induces kidney bicarbonate loss. Acid-base assessment requires the integration of clinical findings and a systematic interpretation of arterial blood gas parameters. In clinical use, traditional acid-base interpretation rules based on the bicarbonate buffer system or standard base excess estimations and the interpretation of the anion gap, are substantially equivalent to the physicochemical method of Stewart, and are generally easier to use at the bedside. The Stewart method may have advantages in accurately explaining certain physiological and pathological acid base problems.

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Banerjee, Ashis, and Clara Oliver. Respiratory emergencies. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780198786870.003.0010.

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Difficulty in breathing is both a common presenting complaint and a major acute presentation in the emergency department (ED). This chapter covers the common causes of breathlessness. It focuses on the management and diagnosis of asthma and chronic obstructive pulmonary disease (COPD) in line with the British Thoracic Society guidelines, which may commonly appear as a short-answer question (SAQ). In addition, this chapter covers the pathophysiology of T2RF and its management, including the indications and contraindications for non-invasive ventilation. Another common topic examined in the SAQ paper is acid-base disturbances. This chapter includes a section on the indications and interpretation of arterial blood gas analysis.

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Paul, Berghuis, ed. Respiration. Redmond, Wash: SpaceLabs, Inc., 1992.

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Gattinon, Luciano, and Eleonora Carlesso. Acute respiratory failure and acute respiratory distress syndrome. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199687039.003.0064.

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Respiratory failure (RF) is defined as the acute or chronic impairment of respiratory system function to maintain normal oxygen and CO2 values when breathing room air. ‘Oxygenation failure’ occurs when O2 partial pressure (PaO2) value is lower than the normal predicted values for age and altitude and may be due to ventilation/perfusion mismatch or low oxygen concentration in the inspired air. In contrast, ‘ventilatory failure’ primarily involves CO2 elimination, with arterial CO2 partial pressure (PaCO2) higher than 45 mmHg. The most common causes are exacerbation of chronic obstructive pulmonary disease (COPD), asthma, and neuromuscular fatigue, leading to dyspnoea, tachypnoea, tachycardia, use of accessory muscles of respiration, and altered consciousness. History and arterial blood gas analysis is the easiest way to assess the nature of acute RF and treatment should solve the baseline pathology. In severe cases mechanical ventilation is necessary as a ‘buying time’ therapy. The acute hypoxemic RF arising from widespread diffuse injury to the alveolar-capillary membrane is termed Acute Respiratory Distress Syndrome (ARDS), which is the clinical and radiographic manifestation of acute pulmonary inflammatory states.

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Gattinon, Luciano, and Eleonora Carlesso. Acute respiratory failure and acute respiratory distress syndrome. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199687039.003.0064_update_001.

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Respiratory failure (RF) is defined as the acute or chronic impairment of respiratory system function to maintain normal oxygen and CO2 values when breathing room air. ‘Oxygenation failure’ occurs when O2 partial pressure (PaO2) value is lower than the normal predicted values for age and altitude and may be due to ventilation/perfusion mismatch or low oxygen concentration in the inspired air. In contrast, ‘ventilatory failure’ primarily involves CO2 elimination, with arterial CO2 partial pressure (PaCO2) higher than 45 mmHg. The most common causes are exacerbation of chronic obstructive pulmonary disease (COPD), asthma, and neuromuscular fatigue, leading to dyspnoea, tachypnoea, tachycardia, use of accessory muscles of respiration, and altered consciousness. History and arterial blood gas analysis is the easiest way to assess the nature of acute RF and treatment should solve the baseline pathology. In severe cases mechanical ventilation is necessary as a ‘buying time’ therapy. The acute hypoxemic RF arising from widespread diffuse injury to the alveolar-capillary membrane is termed Acute Respiratory Distress Syndrome (ARDS), which is the clinical and radiographic manifestation of acute pulmonary inflammatory states.

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Book chapters on the topic "Respiratory Gas Analysis"

1

Astrup, Poul, and John W. Severinghaus. "Blood Gas Transport and Analysis." In Respiratory Physiology, 75–107. New York, NY: Springer New York, 1996. http://dx.doi.org/10.1007/978-1-4614-7520-0_3.

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Hughson, Richard L., and George D. Swanson. "Breath-By-Breath Gas Exchange: Data Collection and Analysis." In Respiratory Control, 179–90. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0529-3_20.

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Drexler, H. "Respiratory Gas Analysis in Patients with Chronic Heart Failure." In Computerized Cardiopulmonary Exercise Testing, 95–102. Heidelberg: Steinkopff, 1991. http://dx.doi.org/10.1007/978-3-642-85404-0_9.

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Swanson, George D. "Experimental Design and Analysis for Assessing Gas Exchange Kinetics During Exercise." In Modeling and Parameter Estimation in Respiratory Control, 45–51. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0621-4_5.

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Christensen, P. "Non-Invasive Estimation of the Effective Pulmonary Blood Flow and Gas Exchange from Respiratory Analysis." In Update in Intensive Care and Emergency Medicine, 150–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60696-0_14.

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Paoletti, P., E. Fornai, A. G. Neto, R. Prediletto, S. Ruschi, and C. Giuntini. "The Assessment of Gas Exchange by Automated Analysis of O2 and CO2 Alveolar to Arterial Differences: 3 Years Experience in Respiratory Clinical Physiology." In Computers in Critical Care and Pulmonary Medicine, 57–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70068-2_8.

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Annamalai, Kalyan. "Chapter 6 Respiratory Quotient (Rq), Exhaust Gas Analyses, CO2 Emission, and Applications in Automobile Engineering." In Pollution and the Atmosphere, 89–96. 3333 Mistwell Crescent, Oakville, ON L6L 0A2, Canada: Apple Academic Press, 2016. http://dx.doi.org/10.1201/9781315365633-7.

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Clutton, R. Eddie. "Blood Gas Analysis." In Equine Respiratory Medicine and Surgery, 201–9. Elsevier, 2004. http://dx.doi.org/10.1016/b978-0-7020-2759-8.50019-2.

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"Pulse oximetry and arterial blood gas analysis." In Respiratory Care, 45–58. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315382067-5.

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Magee, Patrick, and Mark Tooley. "Respiratory Gas Analysers." In The Physics, Clinical Measurement and Equipment of Anaesthetic Practice for the FRCA. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199595150.003.0020.

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The purpose of respiratory gas analysis during anaesthesia is to identify and measure the concentrations, on a breath by breath basis, of the individual gases and vapours in use. It may also be useful as a guide to cardiac function or to identify trace contaminant gases. Different techniques use different physicochemical properties of the gas or vapour. An understanding of the physical principle underlying each method is necessary in order to recognise the value and limitations of each. In terms of the device’s ability to respond on a breath by breath basis, there are two important components: the time taken for the gas to be sampled from the anaesthetic machine or breathing system, the delay time; then there is the time taken for the device to measure the gas concentration, the response time. This is depicted in Figure 16.1. Most of the delay occurs in the delay time or transit time and can be reduced either by analysing the gas sample close to the airway, or by using as short and thin a sampling tube and as high a sampling flow rate to the analyser as possible [Chan et al. 2003]; the sampling flow rate is usually of the order of 100 to 200 ml min−1. If minimal fresh gas flow rates are being used in a circle anaesthetic breathing system and the sampled gas is not returned to the breathing system, then a high gas sampling rate could represent a significant gas leak. Figure 16.1 shows a sigmoid curve of recorded gas concentration change in response to a square wave input change. The response of a gas analyser is often expressed as the time taken to produce a 90–95% response to a step or square wave input change. A square wave change in gas concentration can be produced by moving a gas sampling tube rapidly into and out of a gas stream, by bursting a small balloon within a sampling volume containing a gas sample, or by switching a shutter to a gas sample volume using a solenoid valve. An important part of the use of gas analysers is zeroing and calibration since they are all prone to drift in both zero and gain.

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Conference papers on the topic "Respiratory Gas Analysis"

1

TESCHL, S., J. BATZEL, and F. KAPPEL. "A MODEL OF THE CARDIOVASCULAR-RESPIRATORY CONTROL SYSTEM WITH APPLICATIONS TO EXERCISE, SLEEP, AND CONGESTIVE HEART FAILURE." In Conference Breath Gas Analysis for Medical Diagnostics. WORLD SCIENTIFIC, 2005. http://dx.doi.org/10.1142/9789812701954_0025.

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2

Sukul, Pritam, Phillip Trefz, Jochen Schubert, and Wolfram Miekisch. "Role of respiratory physiology on real-time breath-gas analysis." In ERS International Congress 2017 abstracts. European Respiratory Society, 2017. http://dx.doi.org/10.1183/1393003.congress-2017.pa2222.

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3

Gan, Akagi, Ribeiro, and Slutsky. "Continuous Estimation Of Pulmonary Blood Flow Using Respiratory Inert Gas Analysis." In Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 1992. http://dx.doi.org/10.1109/iembs.1992.595793.

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4

Gan, K., M. Akagi, S. P. Ribeiro, and A. S. Slutsky. "Continuous estimation of pulmonary blood flow using respiratory inert gas analysis." In 1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 1992. http://dx.doi.org/10.1109/iembs.1992.5761177.

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5

Ghazanshahi, Shahin D. "Application of Wiener's theory to nonlinear analysis of respiratory gas exchange system." In 1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 1992. http://dx.doi.org/10.1109/iembs.1992.5761170.

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6

Byrne, Anthony, Michael Bennett, Rebecca Symons, Robindro Chaterji, Nathan Pace, and Paul Thomas. "Peripheral venous blood gas analysis versus arterial blood gas analysis for the diagnosis of respiratory failure and metabolic disturbance in adults." In ERS International Congress 2018 abstracts. European Respiratory Society, 2018. http://dx.doi.org/10.1183/13993003.congress-2018.pa2301.

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7

Funaki, Tatsuya. "Development of Unsteady Gas Flow Generator for Evaluating the Dynamic Characteristic of Respiratory Gaseous Flow Meter." In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30748.

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Respiratory gaseous flow measurement is one of an unsteady gas flow measurement and becoming very important. It has a wide field of application, for example, a measurement of lung function, an evaluation of respiratory gas exchange, a grasp of medical condition and so on. Especially, the evaluation of the absolute quantity and the analysis of the breathing waveform pattern are very important in the respiratory gaseous flow measurement. However, the dynamic characteristics of the respiratory gaseous flow meter has not been quantitatively measured and evaluated in the actual unsteady flows. There is substantial literature dealing with the measurement of unsteady gas flow. Most of these studies generated unsteady mass flows by using piston cylinders. Clearly, in these studies, substantial efforts must have been required in order to minimize the sensitivity dependence of density fluctuation on pressure and temperature variations. On the other hand, the dynamic characteristic evaluation of the gaseous flow meter which reproduced the sinusoidal waveform with only a single frequency component in the measurement frequency band was typically enough. However, the respiratory airflow waveform with the various frequency components and the shapes is complicated. Moreover, we already know that the respiratory waveform pattern changes by a state of health and activities. To solve these problems, this paper deals with the development of unsteady gas flow generator for the various breathing waveform reproduction. At first, we carry out the survey on the respiratory gaseous flow. Based on the research background and the above mentioned survey, we develop and introduce the unsteady gas flow generator which can generate the various respiratory flows. And we show the effectiveness of the developed unsteady gas flow generator. Moreover, we conduct the performance evaluation of the developed unsteady gas flow generator and the uncertainty analysis.

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8

Taskin, M. Ertan, Tao Zhang, Bartley P. Griffith, and Zhongjun J. Wu. "Computational Analysis of a Wearable Artificial Pump Lung Device in Terms of Rotor/Stator Interactions." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-204441.

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Lung disease is America’s third largest killer, and responsible for one in seven deaths [1]. Most lung disease is chronic, and respiratory support is essential. Current therapies for the respiratory failure include mechanical ventilation and bed-side extracorporeal membrane oxygenation (ECMO) devices which closely simulate the physiological gas exchange of the natural lung.

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9

Zaffora, Adriano, Paola Bagnoli, Roberto Fumero, and Maria Laura Costantino. "Computational Fluid Dynamic Analysis of an Instrumented Endotracheal Tube for Total Liquid Ventilation to Optimize Pressure Transducer Positioning." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206457.

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Despite advances in respiratory care, the treatment of critical neonatal patients with conventional mechanical ventilation (CMV) techniques has still many drawbacks. To address this issue, Total Liquid Ventilation (TLV) with liquid perfluorocarbons (PFC) has been investigated as an alternative respiratory modality [1,2]. A dedicated TLV ventilator supplies PFC tidal volumes (TV) through an endotracheal tube (ETT) inserted into the trachea. In experimental studies, TLV proved to be able to support pulmonary gas exchange while preserving lung structure and function. Moreover, PFC properties make these liquids an optimal medium to treat neonatal respiratory failure [1–3]. However, different aspects of TLV have to be further investigated for a safe transition from the laboratory experience to the clinical application. One of these aspects is the possible airway and lung injury that may be caused by the peculiar fluid dynamics developed when using an incompressible and viscous liquid instead of air as a respiratory medium. To overcome this issue, continuous reliable real-time monitoring of airway pressure during TLV is crucial. Thus, the instrumentation of the ETT with a pressure transducer (PT) is mandatory to perform a safe TLV treatment [4–6]. At present, no commercial instrumented ETTs designed for TLV are available; thus during TLV experimental animal trials [4–6] ETT prototypes instrumented with homemade PT-equipped catheters are currently used. However, the positioning of this catheter has to be optimized in order to reduce fluid dynamic disturbances that can alter pressure measurements. Aim of this study is to investigate on the PFC fluid-dynamic patterns in the presence of the catheter by computational fluid dynamic (CFD) analysis, in the view of the development of a TLV dedicated instrumented ETT. In particular, the effect of two different positioning of the PT catheter on the PFC fluid dynamics and airway pressure measurement was evaluated for a neonatal ETT.

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10

Matyushev, T. V., M. V. Dvornikov, S. P. Ryzhenkov, and M. A. Petrov. "Analysis of the body gas exchange indicators in high-altitude flight on the basis of the static model of the respiratory system." In XLIV ACADEMIC SPACE CONFERENCE: dedicated to the memory of academician S.P. Korolev and other outstanding Russian scientists – Pioneers of space exploration. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0036005.

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