Search results for " High-resolution computed tomography"

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High-resolution computed tomography quantitation of emphysema is correlated with selected lung function values in stable COPD

2012

<b><i>Background:</i></b> The literature shows conflicting results when high-resolution computed tomography (HRCT) scores of emphysema were correlated with different indices of airflow obstruction. <b><i>Objectives:</i></b> We correlated HRCT scores of emphysema with different indices of airflow obstruction. <b><i>Methods:</i></b> We performed HRCT of the chest in 59 patients, all smokers or ex-smokers, with stable chronic obstructive pulmonary disease of different severity [GOLD stages I–IV; mean age ± SD 67.8 ± 7.3 years; pack/years 51.0 ± 34.6; percent predicted forced expiratory volume in 1 s (FEV<sub>1</su…

MalePulmonary and Respiratory MedicineEmphysema COPD High-resolution computed tomography Lung structural alterationsVital capacityHigh-resolution computed tomographyPulmonary diseaseLung structural alterationsSeverity of Illness IndexPulmonary Disease Chronic ObstructiveFEV1/FVC ratioSeverity of illnessmedicineHumansCOPDLung volumesLung functionHigh-resolution computed tomographyAgedEmphysemaCOPDmedicine.diagnostic_testbusiness.industryChronic obstructive pulmonary diseaseSmokingrespiratory systemmedicine.diseaseBronchodilator AgentsRespiratory Function Testsrespiratory tract diseasesPulmonary EmphysemaAnesthesiaMultivariate AnalysisFemaleTomography X-Ray ComputedbusinessNuclear medicineChronic obstructive pulmonary disease; Emphysema; High-resolution computed tomography; Lung structural alterations;
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The airway response to deep inspirations decreases with COPD severity and is associated with airway distensibility assessed by computed tomography.

2008

In patients with mild chronic obstructive pulmonary disease (COPD), the effect of deep inspirations (DIs) to reverse methacholine-induced bronchoconstriction is largely attenuated. In this study, we tested the hypothesis that the effectiveness of DI is reduced with increasing disease severity and that this is associated with a reduction in the ability of DI to distend the airways. Fifteen subjects [Global Initiative for Chronic Obstructive Lung Disease (GOLD) stage I–II: n = 7; GOLD stage III–IV: n = 8] underwent methacholine bronchoprovocation in the absence of DI, followed by DI. The effectiveness of DI was assessed by their ability to improve inspiratory vital capacity and forced expira…

SpirometryHigh-resolution computed tomographyPhysiologyRespiratory SystemVital CapacityHyperinflationSettore MED/10 - Malattie Dell'Apparato RespiratorioSeverity of Illness IndexBronchial Provocation TestsBronchoconstrictor AgentsAirway-parenchyma interdependencePulmonary Disease Chronic ObstructiveBronchoprovocationPhysiology (medical)Forced Expiratory VolumeSeverity of illnessAdministration InhalationmedicineHumansHigh-resolution computed tomographyMethacholine ChlorideAgedAged 80 and overCOPDMethacholinemedicine.diagnostic_testbusiness.industryAirway-parenchyma interdependence; Bronchoprovocation; High-resolution computed tomography; Hyperinflation; Methacholine; Administration Inhalation; Aged; Aged 80 and over; Bronchial Hyperreactivity; Bronchial Provocation Tests; Bronchoconstrictor Agents; Elasticity; Forced Expiratory Volume; Humans; Methacholine Chloride; Middle Aged; Pulmonary Disease Chronic Obstructive; Respiratory System; Severity of Illness Index; Spirometry; Vital Capacity; Inhalation; Tomography Spiral Computed; Physiology; Physiology (medical)Respiratory diseaseArticlesrespiratory systemMiddle Agedmedicine.diseaseElasticityrespiratory tract diseasesBronchial Provocation TestInhalationSpirometryAnesthesiaBronchoconstrictor AgentBronchoconstrictionMethacholinemedicine.symptomBronchial HyperreactivityAirwaybusinessTomography Spiral ComputedHumanmedicine.drugJournal of applied physiology (Bethesda, Md. : 1985)
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