Respiratory alterations of the components of the first heart sound.
D000328:Adult; D000818:Animals; D001794:Blood Pressure; D006328:Cardiac Catheterization; D002302:Cardiac Output; D004285:Dogs; D005260:Female; D006326:Heart Auscultation; D006339:Heart Rate; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D008297:Male; D010701:Phonocardiography; D012119:Respiration; D013565:Sympatholytics / Q000494:pharmacology; D014630:Vagus Nerve / Q000502:physiology
D013565:Sympatholytics