You EF% is fine. Remember, EF% is dynamic and it changes based on your body's need and how your heart is reacting to outside stimuli. Also, remember it is basically an estimate and anything between 50% and 75% is normal so to have reading fluctuate between the two limits day to day is normal. Your test results are all essentially normal and the fact that you are 19 makes a heart attack very, very, very unlikely.
It sounds to me like you are too focused on your heart. Listen to your doctors and try to move on but make sure to report any new symptoms to your medical professional.
An Echocardiogram is not all that accurate. Normal would be an EF between 55 and 65%. So, if you take the anxiety away you're probably ok. Do a Thallium stress test if you are really that concerned.
I am thinking of doing CT or MRI coronarography, but i am little bit afraid of kidney complications. Stress test won't, i am still pretty weak and on beta blockers.
Is it even possible for myocardial infraction to be absolutely undiagnostible for 10 days after the event?
If i have no c reactive protein 4 days after the event does that mean i have definiteky not suffered from myocardial infraction or myocarditis?
Another disturbing thing my ck levels:
31.05 ck - 125 , ck-mb-14
03.06 ck-230 ck-mb-13
Okay, maybe this will help ease your mind...a heart attack is caused by a lack of bloodflow to the heart muscle. Usually that means you have clogged ateries; it takes 20+ years of eating junk foods to clog up arteries in the heart. You haven't even been alive long enough to have clogged arteries. Also, when a person has a heart attack, there WOULD BE definite changes in the EKG which would also be impossible to miss. As far as a cardiomyopathy goes; that would easily be seen on ECHO. You have a healthy heart! Now go out and focus on the life you have, there are too many teens your age that are dying from heart disease who would give anything not to have heart disease running their lives for them!
Oh yes....your EF%s are all within the normal range as well. Something as simple as how well you are hydrated can alter those readings.