The second heart sound in health and in pulmonary hypertension.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D006321:Heart / Q000503:physiopathology*; D006326:Heart Auscultation; D006801:Humans; D006976:Hypertension, Pulmonary / Q000503:physiopathology*; D007223:Infant; D008875:Middle Aged; D010701:Phonocardiography; D012119:Respiration