Lung Volume Measurements
Mostrando 13-24 de 150 artigos, teses e dissertações.
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13. Intrathecal morphine plus general anesthesia in cardiac surgery: effects on pulmonary function, postoperative analgesia, and plasma morphine concentration
OBJECTIVES: To evaluate the effects of intrathecal morphine on pulmonary function, analgesia, and morphine plasma concentrations after cardiac surgery. INTRODUCTION: Lung dysfunction increases morbidity and mortality after cardiac surgery. Regional analgesia may improve pulmonary outcomes by reducing pain, but the occurrence of this benefit remains controver
Clinics. Publicado em: 2009-04
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14. Estudo da influência do esforço e da posição corporal no esvaziamento pulmonar regional em indivíduos saudáveis por meio da tomografia de impedância elétrica / Effect of effort and posture on regional lung emptying in healthy subjects detected by electric impedance tomography
A Tomografia de Impedância Elétrica (TIE) é um método de imagem que permite estudarmos alterações regionais de ventilação pulmonar com alta resolução temporal. Estudamos a influência da posição corporal e do esforço expiratório no esvaziamento regional pulmonar comparando dados de espirometria com os da TIE adquiridos simultaneamente. MÉTODOS
Publicado em: 2009
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15. TNF-a and IL-10 levels in tracheobronchial lavage of ventilated preterm infants and subsequent lung function
The role of airway inflammation in ventilated preterm newborns and the risk factors associated with the development of chronic lung disease are not well understood. Our objective was to analyze the association of the airway inflammatory response in ventilated preterm infants by serial measurements of TNF-a and IL-10 in tracheobronchial lavage (TBL) with peri
Brazilian Journal of Medical and Biological Research. Publicado em: 2007-04
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16. Evaluation of the dead-space : tidal volume ratio as a predictor of success in the removal of mechanical ventilation of critically ill children / "Avaliação da relação entre espaço morto e volume corrente como índice preditivo de sucesso na retirada da ventilação mecânica de crianças gravemente enfermas"
O momento ideal para a extubação de crianças graves é ainda difícil de ser avaliado. A razão entre espaço morto e volume corrente (Vd/Vt), como valor preditiva de extubação bem sucedida, já foi testada em adultos e crianças. O objetivo deste trabalho foi avaliar a eficácia do Vd/Vt, como preditivo do sucesso da extubação, em crianças de uma UT
Publicado em: 2004
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17. Software compensation for lung volume in assessment of inspiratory muscle strength and endurance.
BACKGROUND--To increase the sensitivity of measurements of maximal inspiratory pressure (MIP) as a test of inspiratory muscle strength and endurance, software was developed to correct for variation in lung volume. METHODS--Using a body plethysmograph to determine absolute lung volume during each manoeuvre, values for MIP were expressed as a percentage of the
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18. Regional extravascular density and fractional blood volume of the lung in interstitial disease.
Regional lung density (g lung/ml thoracic volume) and fractional pulmonary blood volume (ml blood/ml thoracic volume) have been measured by positron tomography in 10 patients with interstitial disease. From the measurements regional extravascular lung density (g tissue and interstitial water/ml thoracic volume) was derived, providing a non-invasive measureme
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19. Automated system for the measurement of airways resistance, lung volumes, and flow-volume loops.
Using a digital computer and body plethysmograph measurements of airways resistance, lung volumes, and flow-volume loops may be obtained from a single manoeuvre performed by the patient. All the measurements together with a display of the flow-volume loop are displayed within 10 seconds of the patient completing the manoeuvre. The system appears to offer con
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20. Maximum expiratory flow rates in induced bronchoconstriction in man
We evaluated changes of maximum expiratory flow-volume (MEFV) curves and of partial expiratory flow-volume (PEFV) curves caused by bronchoconstrictor drugs and dust, and compared these to the reverse changes induced by a bronchodilator drug in previously bronchoconstricted subjects. Measurements of maximum flow at constant lung inflation (i.e. liters thoraci
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21. Reproducibility of pulmonary function tests under laboratory and field conditions.
The reproducibility of pulmonary function tests in the laboratory and in a mobile field survey vehicle has been studied. Groups of laboratory workers were studied at base and a random sample of 38 coalminers was examined in the mobile laboratory. The intra-subject variability of some newer tests of lung function, including closing volume and maximum flow at
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22. Effects of a molecular change in collagen on lung structure and mechanical function.
Semicarbazide, a lathyrogen, was given to growing rats to elucidate the consequences of altering the molecular structure of fibrous proteins within the lung. Static pressure-volume (P-V) measurements during deflation of saline-filled lungs showed normal recoil pressure and compliance values within the physiological range of lung volume. Quasi-static P-V meas
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23. Reference values and prediction equations for normal lung function in a non-smoking white urban population.
Prediction equations for normal lung function have been derived from tests on 179 healthy, non-smoking, white urban dwellers. The subjects, 96 women (height 1.46-1.77 m) and 83 men (height 1.61-1.96 m) aged 18-86 years, underwent measurements of spirometric flow and volume, multi-breath helium dilution lung volumes, and single breath carbon monoxide transfer
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24. Estimation of lung volumes from chest radiographs using shape information.
The cross-sectional shapes of the chest and its contained structures have been assessed in post-mortem anatomical sections and from computerised tomographic scans in living subjects. These shapes are described by simple equations that can be used to increase the accuracy of measuring lung volumes from chest radiographs. Radiographic estimates of total lung c