Yesterday I went to a hospital and heard a doctor say that one of the heart valves of a patient is not working. However, the patient was still alive and was healthy; the patient could walk and talk too. I could not understand it because I have read that all valves of heart are extremely important. I have tried searching on google but all I could find was heart attack problems.
It is not possible that one of the valve is completely closed and the person is still alive without being in ICU. I think what the doctor was trying to communicate to the patient was that one of the valves is in the process of complete closure. There are three main types of diseases associated with heart valves :-
1- Blood flows backwards 2- Heart valve opening becomes narrow 3- upper condition may lead to complete closure
For details see the following link:-
Hope you understand. :)