title: The incidence of tricuspid valvular regurgitation in patients with severe chronic obstructive pulmonary disease as determined by two-dimensional echocardiography.
mesh_terms: D000368:Aged; D004452:Echocardiography; D005260:Female; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000150:complications*; D008297:Male; D008875:Middle Aged; D014262:Tricuspid Valve Insufficiency / Q000150:complications / Q000175:diagnosis*