Scott C. Streckenbach, M.D. (Director of perioperative echocardiography at Mass General Hospital, Harvard Medical School) discusses TEE assessment of prosthetic valves. Included are two pdf files of great value: PDF 19 is a copy of the slides discussed in the lecture, and PDF 20 is an outstanding discussion of prosthetic valves. We are immensely grateful to Dr Streckenbach for his contribution to this website.