title: Comparative prevalence of the fourth heart sound in hypertensive and matched normal persons.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D002339:Carotid Arteries; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006326:Heart Auscultation; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D006973:Hypertension / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D010701:Phonocardiography; D011674:Pulse; D012737:Sex Factors