X-ray chest PA view shows:
a) Starr–Edwards prosthetic mitral valve
b) Starr–Edwards prosthetic aortic valve
c) Bjork–Shiley prosthetic tricuspid valve
d) Bjork–Shiley prosthetic pulmonary valve
Post your answers as comments below. You may add the justification for the answer and other findings on the CXR. Correct answer will be posted next week.