title: Sonic echocardiography: what does it mean when there are no bubbles in the left ventricle?
authors.forename: Hugh D
authors.initials: HD
authors.lastname: Van Liew
authors.forename: Richard D
authors.initials: RD
authors.lastname: Vann
mesh_terms: D000328:Adult; D005080:Exercise Test / Q000379:methods; D005260:Female; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D018496:Hyperoxia / Q000175:diagnosis / Q000503:physiopathology*; D000860:Hypoxia / Q000175:diagnosis / Q000503:physiopathology*; D008297:Male; D045423:Microbubbles; D010101:Oxygen Consumption; D011651:Pulmonary Artery / Q000503:physiopathology*; D012965:Sodium Chloride / Q000097:blood*; D055815:Young Adult
chemical_list: D012965:Sodium Chloride