title: Sound pressure correlates of the second heart sound. An intracardiac sound study.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001783:Blood Flow Velocity; D006328:Cardiac Catheterization; D002302:Cardiac Output; D004562:Electrocardiography; D005260:Female; D006326:Heart Auscultation; D006331:Heart Diseases / Q000175:diagnosis / Q000503:physiopathology*; D006344:Heart Septal Defects, Atrial / Q000503:physiopathology; D006801:Humans; D006976:Hypertension, Pulmonary / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D010701:Phonocardiography; D011651:Pulmonary Artery / Q000503:physiopathology; D011652:Pulmonary Circulation; D011667:Pulmonary Veins / Q000503:physiopathology; D012214:Rheumatic Heart Disease / Q000503:physiopathology; D014655:Vascular Resistance