A 35-year-old woman is admitted to the hospital with a complaint of shortness of breath. During physical examination it is noted that there is wide splitting in her S2 heart sound. Which of the following valves is/are responsible for production of the S2 heart sound?
The S2 heart sound refers to the second (dub) heart sound. This sound is produced by the closure of the aortic and pulmonary semilunar valves. The closure of mitral/bicuspid and tricuspid valves produce the first S1 (lub) heart sound.
Mitral valve
Pulmonary and aortic
Aortic and mitral
Tricuspid
Thorax