Check valve airway obstruction by blood clot.
D001777:Blood Coagulation; D001982:Bronchial Diseases / Q000209:etiology*; D001995:Bronchography; D006469:Hemoptysis / Q000209:etiology; D006470:Hemorrhage / Q000150:complications*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008946:Mitral Valve Stenosis / Q000175:diagnosis; D012214:Rheumatic Heart Disease / Q000150:complications