Oxymetry
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Efeito da correção cirúrgica nas variáveis do teste cardiopulmonar de exercício em pacientes com insuficiência mitral crônica. / Effect of surgical correction on cardiopulmonary exercise testing in patients with organic mitral regurgitation.
Introduction: Chronic organic Mitral Regurgitation (MR) has a complex physiopathology. The symptoms of heart failure and functional capacity worsening may appear too late, when a left ventricle (LV) contractile dysfunction already exists. The cardiopulmonary exercise testing (CPET) may objectively assess the functional capacity and helps in the medical condu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/05/2012
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2. Suíno como modelo experimental na pesquisa biomédica: valores fisiológicos normais = Swine in biomedical research: normal physiological values / Swine in biomedical research: normal physiological values
Background: The use of animals in biomedical research is of great importance. It is fundamental for the development and improvement of new practices and technologies. The selection of the species must take into consideration the practicality of handling and the suitability for the experiment, and it must have low operational costs. Swine are important as an
Publicado em: 2011
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3. Suino como modelo experimental na pesquisa biomédica: valores fisiológicos normais
Background: The use of animals in biomedical research is of great importance. It is fundamental for the development and improvement of new practices and technologies. The selection of the species must take into consideration the practicality of handling and the suitability for the experiment, and it must have low operational costs. Swine are important as an
Publicado em: 2011
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4. Repercussões oxi-hemodinâmicas do banho no paciente adulto internado em estado crítico: evidências pela revisão sistemática de literatura / Oxy-hemodynamic effects of bath in adult patients hospitalized in critical condition: evidence for the systematic review of literature
The bath of the patient in critical state is an activity that requires several stages of planning, because of the characteristics and peculiarities. The peculiar technological apparatus of high complexity units allow for monitoring, but difficult access and mobilization of the patient. The oxy-hemodynamic effects of bath in adult patients hospitalized in cri
Publicado em: 2009
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5. Ambulatory blood pressure monitoring in patients with chronic obstructive pulmonary disease with sleep desaturation / Monitorização ambulatorial da pressão arterial em portadores de doença pulmonar obstrutiva crônica com dessaturação no sono
Introduction: The hypoxemia during the sleep period can, by a sympathetic activation mechanism, change the blood pressure. Few studies show the alterations of the blood pressure, during the sleep period, in chronic obstructive pulmonary disease patients that do not have sleep apnea, but do desaturate during this period. Objective: To analyze the arterial pre
Publicado em: 2008
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6. Estudo comparativo do conforto e efeitos adversos de interfaces para ventilaÃÃo nÃo invasiva em voluntÃrios sadios / Comparative study of the comfort and adverse effect of interfaces for not invasive ventilation in healthy volunteers
Rationale: Non-invasive ventilation (NIV) is defined as a ventilatory support technique using an interface (usually a mask) instead of tracheal intubation to adapt the patientâs respiratory system to the ventilator. Although it is as efficacious as the invasive method in terms of improving gas exchange in patients with respiratory failure due to various eti
Publicado em: 2006
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7. "Desenvolvimento de monitor de oximetria contínua para diagnóstico de apnéia obstrutiva do sono na unidade coronária" / Development of a continuous overnight oximetry monitor for the diagnosis of obstructive sleep apnea in the coronary care unit.
BACKGROND: A high prevalence of Obstructive sleep apnea (OSA) has been reported in patients with coronary artery disease (CAD). Several OSA related mechanisms, such as oxygen desaturation, high sympathetic activity, increased cardiac oxygen demand and a prothrombotic state, may be particularly dangerous in acute CAD patients. Nevertheless, OSA is frequently
Publicado em: 2005
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8. Função pulmonar de crianças e adolescentes infectados pelo virus da imunodeficiencia humana com pneumonia intersticial
BACKGROUND: Pulmonary compromise is observed in as much as 80% of human immunodeficiency virus (HIV)-infected children. Such compromise may be due to recurrent lung infections or specifically related to HIV, composing the pulmonary lymphoid hyperplasia / lymphoid interstitial pneumonitis (PLH/LIP) complex. This study aimed to evaluate physiological, clinical
Publicado em: 2005
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9. Avaliação do transporte de oxigenio e da concentração do 2,3-DPG em pacientes com traumatismo craniencefalico grave submetidos ao controle da hipertensão intracraniana por um protocolo de ventilização otimizada
Optimized ventilation is a therapeutic modality for severe traumatic brain injury. Essentially, alveolar ventilation is adjusted to optimal levels in order to keep intracranial pressure below 20mmHg and cerebral oxygen extraction (CEO2) within recommended limits (24 to 42%). Determination of CEO2 is based on blood oxygen saturation. Hemoglobin oxygen saturat
Publicado em: 2003
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10. Direct measurement of nitroxide pharmacokinetics in isolated hearts situated in a low-frequency electron spin resonance spectrometer: implications for spin trapping and in vivo oxymetry.
The pharmacokinetics of two nitroxides were investigated in isolated rat hearts situated in a low-frequency electron spin resonance spectrometer. The spin labels 2,2,3,3,5,5-hexamethyl-1-pyrrolidinyloxy and 3-carboxy-2,2,5,5-tetramethyl-1-pyrrolidinyloxy were chosen for their physiochemical analogy to the spin trap 5,5-dimethyl-1-pyrroline N-oxide (DMPO) and
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11. Oxymetry deep in tissues with low-frequency electron paramagnetic resonance.
We have measured the oxygen concentration in the body water of murine FSa and NFSa fibrosarcomas using a new method for quantitative oxygen concentration determination deep in the tissues of a living animal. The measurement uses unusually low-frequency electron paramagnetic spectroscopy sensitive to substrate 7 cm deep in tissue, partially deuterated spin pr