Tesis sobre el tema "Respiration de Cheyne Stokes"
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Willson, Grant Neville. "Nocturnal non-invasive ventilation for the treatment of Cheyne-Stokes respiration in chronic heart failure". Thesis, The University of Sydney, 2004. https://hdl.handle.net/2123/27912.
Texto completoCarvalho, Adriana Castro de. "Impacto da etiologia da cardiopatia nos distúrbios respiratórios do sono: comparação entre pacientes com valvopatias versus insuficiência cardíaca com disfunção sistólica". Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/5/5150/tde-21062010-165138/.
Texto completoIntroduction: Central and obstructive sleep apnea (CSA and OSA, respectively) are common in patients with systolic congestive heart failure (ICC). However, several factors leading to respiratory instability, including low cardiac output, pulmonary congestion and hypocapnia co-exist in these patients. Patients with valvular heart disease (VAL) with high pulmonary capillary wedge pressure (PCWP) but normal resting left ventricular ejection fraction (LVEF) may provide insights into the genesis of sleep apnea. Objectives: Compare sleep disordered breathing characteristics in patients with VAL and patients with ICC. Methods: Patients with VAL and PCWP > 12 mmHg and ICC were evaluated by awake arterial blood gas analysis, echocardiogram and overnight polysomnography. Results: Patients with VAL (n=17, PCP=24 ± 9 mmHg and LVEF=61 ± 6 %) and ICC (n=17, LVEF=31 ± 10 %) were similar for demographics and blood gases (age: 46 ± 10 vs 47 ± 9, females: 11 in both groups, body mass index: 26 ± 5 Kg/m2 vs 26 ± 6, PaCO2: 34 ± 3 vs 35 ± 4 mmHg, respectively). Patients with VAL as compared to patients with ICC presented significantly lower apnea hypopnea index (10 ± 8 vs 26 ± 25 events/hour, p=0.0179), a lower prevalence of sleep apnea (apnea-hypopnea index > 15 events/hour) 29% vs 53%, p=0.0009, and among patients with sleep apnea the nature was predominantly OSA (60%) while patients with ICC had predominantly CSA (89%, p < 0.0001). Conclusion: Patients with VAL and high PCWP had a less severe sleep apnea and an excess of obstructive events when compared to patients ICC. Pulmonary congestion and hypocapnia do not completely explain CSA in patients with heart diseases
Figueiredo, Adelaide Cristina de. "Ventilação periódica durante vigília prediz a respiração de Cheyne-Stokes durante o sono em pacientes com insuficiência cardíaca". Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/5/5150/tde-16122008-173100/.
Texto completoIntroduction: Sleep disordered breathing in the form of central sleep apnea and Cheyne-Stokes respiration (CSR) and obstructive sleep apnea (OSA) are common among heart failure (HF) patients and can independently contribute to morbimortality. CSR is an exaggerated form of periodic breathing (PB) in which central apneas alternate with periods of hyperventilation. In contrast, OSA results from recurrent collapse of upper airway during sleep. Objective: We hypothesize that PB while awake predicts CSR during sleep in patients with HF. Methods: Patients were recruited from one outpatient heart failure clinic (Instituto do Coração, InCor) in the period 2001 until 2003. All patients were submitted respiratory monitoring, for 10 minutes while awake in supine position immediately before overnight polysomnography. In the next morning, the patients were monitored for 10 minutes while sitting in a comfortable chair at rest, followed by cardiopulmonary exercise tests (electromagnetic-braked cycle). The presence of sleep disordered breathing was determined through polysomnography (apnea-hypopnea index 15 events/hour). The patients were divided according to the respiratory pattern during sleep in no-Sleep Disordered Breathing (no-SDB), CSR and OSA. Results: Forty seven patients were included in the study, 5 were excluded because of inability to perform exercise. The final group consisted of 42 patients (67% males, age: 62±9 yr, left ventricular ejection fraction: 35±6%). There were 22 in the no-SDB group, 11 in the CSR group and 9 in the OSA group. There were no significant differences among groups regarding anthropometric measurements and left ventricular ejection fraction. The CSR group presented a significantly increased proportion of NYHA functional class III-IV (p=0.03), lower PETCO2 (p=0.01) and increased VE/VCO2 slope (p=0.03) than no-SDB and OSA groups. PB while awake was present 19%, 31% e 36% before and during exercise and before sleep, respectively. Among patients with no-SDB, CSR and OSA, PB while awake was present in 18%, 91% and 22% (p<0.001). Conversely, among patients with PB while awake, the patients were classified as no-SDB, CSR and OSA in 25%, 63% and 13% (p<0.05). PB while awake before exercise and before sleep had sensitivity and specificity to predict the presence CSR of 56 and 88 % and 91 and 84 %, respectively. Conclusions: PB while awake is tightly linked and predicts CSR during sleep, but not OSA. PB while awake can have use in a simple test for to predict the presence of CSR in patients with HF
Guyot, Pauline. "Modélisation et analyse du signal électrocardiographique pour l'étude du système cardio-respiratoire. Application au syndrome d'apnées du sommeil". Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0134.
Texto completoThe heart is at the center of the cardiorespiratory system and the electrocardiogram is one of the most standard medical exam to monitor it along with echocardiography. Electrocardiogram analysis is complex due to the various cardiac pathologies and the emergence of new measurement technologies allows the acquisition of longer but also noisier signals taken in a daily life context. Noise and the huge amount of processed data impose the development of more accurate and robust analytical methods. This thesis aims at developing a new modeling method of cardiac waves using a dictionary composed of skew normal distribution. It fully characterizes each wave (P, Q, R, S and T) through a small number of parameters. This modeling also permits the precise computation of the different classical intervals used in electrocardiography but also the classification of each beat to provide an accelerated reading of long signals and a diagnostic assistance. Finally, those analytical tools are used on two different subjects: the creation of an electrocardiogram simulator as part of the Hopital Virtuel de Lorraine project ; and the detection of sleep apnea syndrom on electrocardiogram signals and more particularly the Cheyne-Stokes respiration, a nocturnal respiratory pathology still not understood, primarily impacting patients with severe heart failure. The method is based on the extraction of signals correlated to respiration from the electrocardiogram signal and allows to graduate different levels of the Cheyne-Stokes respiration
Sahlin, Carin. "Sleep apnea and sleep : diagnostic aspects". Doctoral thesis, Umeå : Umeå universitet, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-18959.
Texto completoBonnin, Vilaplana Marc. "SAHS en els infarts cerebrals: Topografies relacionades, presència de Cheyne-Stokes i eficàcia d'un tractament precoç". Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/398954.
Texto completoSleep-related breathing disorders in acute lacunar stroke. J Neurol. 2009 Dec; 256(12):2036-42 The purpose was to examine the occurrence of sleep-related breathing disorders (SRBD) and variables related to SRBD in patients with acute lacunar stroke. A total of 69.1% of patients showed AHI ≥10, 44.1% AHI ≥20, and 25% AHI ≥30. Cheyne-Stokes respiration (CSR) was present in 20.6% of patients. In the multivariate analysis, smoking or capsular or pontine topographies were associated with AHI ≥10 (OR=3.17, 95%(CI) 1.02–9.79; P=0.045). Lacunes in the internal capsule or the pons in smokers were associated with AHI ≥20 (OR=9.25, 95%(CI) 1.05–81.70; P=0.045). Smoker patients with capsular or pontine acute lacunar stroke should be screened for SRDB. Cheyne-stokes respiration in patients with first-ever lacunar stroke. Sleep Disord. 2012; 2012:257890 The aim of this single-center prospective study was to assess the presence CSR and CSR-related variables in 68 consecutive patients with radiologically proven first-ever lacunar stroke. CSR was diagnosed in 14 patients (20.6%). Patients with CSR as compared with those without CSR showed a significantly higher scores of the Barthel index and the Canadian Neurological scale as a measure of stroke severity, and longer hospital stay. The presence of CSR was associated with a trend towards a higher functional stroke severity and worse prognosis. Early treatment of obstructive apnoea and stroke outcome: a randomised controlled trial. Eur Respir J. 2011 May; 37(5):1128-36. The aim of the present study was to assess the impact of nCPAP in ischaemic stroke patients followed for 2 yrs. Stroke patients with an AHI ≥ 20 events/h were randomised to early nCPAP (n571; 3–6 days after stroke onset) or conventional treatment (n569). The percentage of patients with neurological improvement 1 month after stroke was significantly higher in the nCPAP group. The mean time until the appearance of cardiovascular events was longer in the nCPAP group (14.9 versus 7.9 months; p=0.044), although cardiovascular event-free survival after 24 months was similar in both groups. Early use of nCPAP seems to accelerate neurological recovery and to delay the appearance of cardiovascular events, although an improvement in patients survival was not shown.
Hajo, Alain [Verfasser]. "Vegetativer Tonus am Tage bei chronisch herzinsuffizienten Patienten mit und ohne Cheyne Stokes Atmung / Alain Hajo". Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2008. http://d-nb.info/1022868721/34.
Texto completoSpießhöfer, Jens [Verfasser], Olaf [Gutachter] Oldenburg y Gunnar [Gutachter] Möllenhoff. "Die Cheyne-Stokes Atmung: Freund oder Feind der Herzinsuffizienz? / Jens Spießhöfer ; Gutachter: Olaf Oldenburg, Gunnar Möllenhoff". Bochum : Ruhr-Universität Bochum, 2017. http://d-nb.info/1127334913/34.
Texto completoFouchet-Incaux, Justine. "Modélisation, analyse numérique et simulations autour de la respiration". Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112043.
Texto completoIn this thesis, we study the modelling of the human mecanical ventilation and the numerical analysis of linked systems. Direct simulations of air flow in the whole airways are impossible (complex geometry, unavailable meshes). Then a reduced area of interest can be considered, working with reduced geometries and artificial boundaries. One can also use reduced models, simple but realistic. If one try to make 3D numerical simulations where the fluid flow is described by the Navier-Stokes equations, various issues are raised:- If we consider that ventilation is the result of pressure drops, the associated boundary conditions are Neumann conditions. It leads to theoretical questions in terms of existence and uniqueness of solution and numerical issues in terms of scheme choice and appropriate numerical methods.- When working in a truncated domain, it may be necessary to take into account non-described phenomena with appropriate models. Here we consider 0D models. These 3D/0D couplings imply numerical instabilities that we mathematically and numerically study in this thesis.Furthermore, when we focus on forced breathing, linear usual models are invalidated by experiments. In order to observe the differences between the experimental and numerical results, it is necessary to take into account several types of non-linearities, such as deformation of the domain or the Bernoulli phenomenon. A reduced model approach is adopted in this work. Finally, we sought to validate the obtained models by comparing numerical and experimental results in the context of interdisciplinary work.Achieving model and simulate these flows allow to better understand phenomena and parameters that come into play in diseases (asthma, emphysema ...). A medium-term objective is to study the influence of helium-oxygen mixture in the aerosol deposition. In the longer term, the application of these models to pathological situations could afford to build decision support tools in the medical field (understanding of pathology, therapy optimization ...)
Beil, Dennis [Verfasser], Gerrit [Akademischer Betreuer] Hagenah, Stefan [Akademischer Betreuer] Andreas, Anselm [Akademischer Betreuer] Bräuer y Patricia [Akademischer Betreuer] Virsik-köpp. "Über die Prävalenz der Cheyne-Stokes-Atmung bei herzinsuffizienten Patienten unter moderner medikamentöser Therapie / Dennis Beil. Gutachter: Stefan Andreas ; Anselm Bräuer ; Patricia Virsik-Köpp. Betreuer: Gerrit Hagenah". Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://d-nb.info/1042386536/34.
Texto completoKönigs, Ingo Günter [Verfasser], W. [Akademischer Betreuer] Schütte, T. [Akademischer Betreuer] Seufferlein y I. [Akademischer Betreuer] Fietze. "Kardiale Leistungsfähigkeit bei Patienten mit Cheyne-Stokes-Atmung infolge Herzinsuffiezienz während langfristiger nasaler Beatmungstherapie mittels AutoSet CS / Ingo Günter Königs. Betreuer: W. Schütte ; T. Seufferlein ; I. Fietze". Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2011. http://d-nb.info/1025231082/34.
Texto completoDuman, Ergün [Verfasser] y Ulrich [Akademischer Betreuer] Koehler. "Häufigkeit zentraler schlafbezogener Atmungsstörungen mit Differenzierung nach der Cheyne-Stokes-Atmung bei Patienten mit einer Herzinsuffizienz und eingeschränkter systolischer linksventrikulärer Pumpfunktion (Ejektionsfraktion ≤ 50 %) / Ergün Duman. Betreuer: Ulrich Koehler". Marburg : Philipps-Universität Marburg, 2013. http://d-nb.info/1038786495/34.
Texto completoHeinrich, Jessica Nadine [Verfasser], Olaf [Gutachter] Oldenburg y Andrea [Gutachter] Koch. "Auswirkungen neuer Analyseempfehlungen der American Academy of Sleep Medicine von Apnoen und Hypopnoen zur Graduierung einer nächtlichen Cheyne-Stokes Atmung bei Patienten mit Herzinsuffizienz / Jessica Nadine Heinrich. Gutachter: Olaf Oldenburg ; Andrea Koch". Bochum : Ruhr-Universität Bochum, 2016. http://d-nb.info/1102524832/34.
Texto completoWilcox, Marianne. "A model of the effects of fluid variation due to body position on Cheyne-Stokes respiration". Thesis, 2013. http://hdl.handle.net/10214/5341.
Texto completoDepartment of Mathematics and Statistics
Beil, Dennis. "Über die Prävalenz der Cheyne-Stokes-Atmung bei herzinsuffizienten Patienten unter moderner medikamentöser Therapie". Doctoral thesis, 2012. http://hdl.handle.net/11858/00-1735-0000-0006-B2B4-2.
Texto completoSoares, Nuno Eduardo Moreira. "Apneia de sono obstrutiva e respiração de Cheyne-Stokes". Master's thesis, 2013. https://repositorio-aberto.up.pt/handle/10216/82810.
Texto completoSoares, Nuno Eduardo Moreira. "Apneia de sono obstrutiva e respiração de Cheyne-Stokes". Dissertação, 2013. https://repositorio-aberto.up.pt/handle/10216/82810.
Texto completoOberländer, Sven [Verfasser]. "Hämodynamische Parameter als Risikofaktoren für das Auftreten einer Cheyne-Stokes-Atmung bei Patienten mit Linksherzinsuffizienz / vorgelegt von Sven Oberländer". 2008. http://d-nb.info/1003680666/34.
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