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Prosthetic heart sounds

Prosthetic aortic sounds
Opening sound in systole—Ejection click
Closing sound—S2
Prosthetic Mitral sounds
Opening sound in diastole—Opening snap
Closing sound—S1
Ball valve type       -Opening sound louder than closing soond
Tilting disc valve  -Only closure sound is heard
Bileaflet valve        -Closure sound well heard
Mitral prosthesis: The opening sound corresponds to opening snap and closing sound to S1
Aortic prosthesis: The opening sound corresponds to ejection click and closing sound to S2