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Browse 1,501 clinical trials for copd. Find studies that match your criteria and connect with research centers.
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NCT02473237
Chronic Obstructive Pulmonary Disease (COPD) secondary to biomass exposure constitutes a chronic respiratory condition frequently excluded from large clinical trials. Biomass exposure COPD have some histopathologic, clinical, radiological and functional differences with tobacco smoke COPD. However, until now, there are no evidence in this patients about the clinical response to bronchodilators routinely used in tobacco smoke COPD. Primary objective: To compare changes in walked meters from baseline on six minute walking test (6MWT) to 23:45 hours after one dose of indacaterol vs tiotropium in patients with moderate to severe COPD secondary to biomass exposure. Secondary objectives: To compare changes in pulmonary function (inspiratory capacity, Forced Expiratory Volume in first second (FEV1) milliliters, FEV1 "through") from baseline (-10 minutes) to 23:45 hours after one dose of indacaterol vs tiotropium in patients with moderate to severe COPD secondary to biomass exposure. This will be an open label study, double blinded, cross over and conducted at specialized respiratory care center (National Institute of Respiratory Diseases), to compare the acute effects of ultra long acting bronchodilators used in tobacco smoke exposure COPD. Unicentric study. Ethics Committee approbation: C 22-12
NCT02185430
COPD is often associated with the airflow limitation and the pulmonary hyperinflation. During the one-lung ventilation (OLV), COPD patients' physiologic dead space increases and hypercapnia may develop. In addition, an alveolar overdistention by the pulmonary hyperinflation would divert pulmonary blood flow and impair arterial oxygenation. Dexmedetomidine has both vasoconstricting and vasodilatatory effects on a peripheral vasculature and a smooth muscle but its effects on bronchial smooth muscle is unknown. The investigators will evaluate the effects of dexmedetomidine (bolus of 1.0 μg kg-1 over 10 min followed by a continuous infusion at 0.5 μg kg-1 h-1 infusion during one-lung ventilation) as bronchodilator in COPD patients when administered during surgery with the one lung ventilation. If result successfully shows the effect of dexmedetomidine as a predominantly a vasodilator on bronchial tree, the investigators study can support the dexmedetomidine as a vasodilator for pulmonary vessels and bronchial smooth muscle and as an excellent adjunct to anesthetic agents in COPD patients during the OLV.