Impact of Endoscopic Lung Volume Reduction on Right Ventricular Myocardial Function

V deformation analysis.We enrolled 32 patients with severe emphysematous COPD scheduled for bronchoscopic LVR using endobronchial valves (Zephyr, PulmonX, Inc.), comprising 16 matched clinical responders and 16 non-responders. Echocardiography was conducted one day prior to ELVR and at an eight-week postprocedural interval.V functional improvement.V contractile gain and identification of clinical responsiveness