title: Cardiac output in middle-aged patients determined with CO2 rebreathing method.
mesh_terms: D000328:Adult; D002245:Carbon Dioxide / Q000032:analysis* / Q000097:blood; D006328:Cardiac Catheterization; D002302:Cardiac Output; D004395:Dye Dilution Technique; D006331:Heart Diseases / Q000503:physiopathology; D006454:Hemoglobins; D006801:Humans; D008171:Lung Diseases / Q000503:physiopathology; D008297:Male; D008722:Methods; D008875:Middle Aged; D010100:Oxygen / Q000032:analysis / Q000097:blood; D010101:Oxygen Consumption; D010313:Partial Pressure; D005082:Physical Exertion; D012119:Respiration; D013147:Spirometry
chemical_list: D006454:Hemoglobins; D002245:Carbon Dioxide; D010100:Oxygen