thanks for your response and sharing your thoughts. I have an appointment with my cardiologist tomorrow and will discuss what appears to be a slight increase in dizziness when getting up quickly. I have had this for quite a while now and thought it a result of some of the BP meds I was on. I have to say, that I am surprised that you say you are on a diuretic, since my doc thinks the heart attack was brought on by dehydration. As I understand it, we don't want to dehydrate with HCM, and water will not do the trick. As I understand, we need to make sure we have plenty of salt in our system which can be a problem with HBP, but that will keep the heart pumping. good luck to you. If I gain any new insights from the doc tomorrow, I will pass it on.