Thank you, I have heart palpitations or which the first time that I ever saw a cardiologist was 1987 for this problem--at that time he diagnosed (following an echo) me with a prolapsed mitralvalve--I returned to him in approx. the year 2000 with the same problem -palpitations-he hade me wear a halter monitor and did a stress test --said the same thing prolapsed mitral valve--for approx. 4 years he would have me come in yearly for a stress test --take atenolol--at one point he added zestril when the beats seemed to not subside--I can go for sever years in between and not be vey bothered with them--in 2008 I went to another cardiologist --he did the echo and stress test --said nothing revealed a prolapsed mitral valve????--I am returning to him in September but a few questions--do these beats contribute to making me feel tired when they are occuring, I do also have some panic and anxiety attacks ,and how could I have been diagnosed with a mitral vale prolapse by one cardiologist and then another says no--???