iansmomma,
thanks for the post.
Im not sure exactly what to make of your story.
In itself the valve is not probably causing your symptoms unless there is a significant amount of stenosis or regurgitation seen on the echocardiogram. If there is a moderate amount, then a TEE may help further define the specifics of the valve. If not routine surveilance of the valve would be the method of choice for following the valve.
Im not sure why they thought you were having a tachycardia unless it was some element of your history they obtained while spending time with you. If so, a holter or event monitor would correlate the symptoms.
good luck,
let us know what happens.
Have you heard of the EF range being different for males and females? I have read it is in some places and in other places they are lumped together. My EF is identical to yours and I am a male.