Is the heart valve replacement procedure particularly dangerous?

No, some risks exist: Like any invasive surgical procedure there are risks: infection<2%, stroke < 1%, death<.5%; these numbers can vary depending on degree of co-existing illness in patient. Many of these procedures have been performed, you can obtain success data on a given physician. In every case, a risk/benefit calculation must be analyzed.

Any procedure is: "particularly dangerous". But what is the "risk-benefit ratio"? Risk analysis can be simple or complex depending upon lots of factors. It maybe helpful to click on this link:http://www.Sbccv.Org.Br/residentes/downloads/artigo-residentes-julho.Pdf.