A lot of the answers you have received are correct. Albuterol
speeds your heart up, So you should be on a preventive medication to keep your asthma
under control. A heart murmur
can be caused by many things. Has your doctor referred you to a heart specialist or is he doing these tests on his own. I have had the tests that you have mentioned. They showed nothing of my heart condition. The less invasive tests are an echocardiogram
and now there is talk that an MRI
can also show what is going on with your heart. The symptoms you mentioned could be a sign of something serious. I am not trying to scare you. You do need to see a specialist if he doesn't do more tests and you continue to have the same symptoms. Go to an ER next time and let them admit you and run the tests. The next step after the tests I mentioned would be a heart catherization, you will be put in twilite sleep while they perform that procedure. That test is usually the last one they perform but they get a better picture of what is wrong with your heart or if you have a blockage, mitral valve prolapse
or mitral reguritation which is what I was finally diagnosed with. Do seek your answers from a cardiologist. Ask your physician for a referral to go. It is your right as a patient and his duty to give you the referral. If you get no where, find another doctor.