Abnormal heart sound Ejection click 2022-11-12T12:09:45Z PMID:21250045 A high-pitched sound that occurs at the moment of maximal opening of the aortic or pulmonary valves. They are heard just after the first heart sound. The sounds occur in the presence of a dilated aorta or pulmonary artery or in the presence of a bicuspid or flexible stenotic aortic or pulmonary valve. Ejection clicks may also be called ejection sounds. Cardiac click sound on auscultation