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Browse 1,730 clinical trials for copd. Find studies that match your criteria and connect with research centers.
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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.
NCT01582958
This project proposes to test the hypothesis that osteopathic manipulative treatment (OMT) given to patients with moderate to severe chronic obstructive pulmonary disease (COPD) enrolled in a 12-week pulmonary rehabilitation program (PRP) will result in improved respiratory pump function over and above that seen in sham and control groups. Specifically, we will study the effects of three OMT techniques: (a) thoracic inlet indirect myofascial release; (b) rib raising with continued stretch of the paraspinal muscle to the L2 level; and (c) cervical paraspinal muscle stretch with suboccipital muscle release. The key clinical readouts will include: spirometry, P100 (and index of diaphragm and inspiratory muscle efficiency), maximum inspiratory pressure (MIP) and maximum expiratory pressure (MEP), as well as laser evaluation of chest wall excursion. Supplementing these objective parameters will be several more subjective clinical outcome measures: exercise tolerance (6-minute walk test), dyspnea (shortness of breath questionnaire), and quality of life questionnaire. Finally, an attempt will be made to correlate biochemical alterations that may shed light on the biological mechanism underlying the OMT procedures.