Hey sorry to hear about your problems, usually an
ekg test is
to determine certain things like, a lack of flow
to the heart muscle, fast, slow or irregular rythm (you mentioned a hr of 30's...that could be a sign of bradycardia..but im not a cardiologist so i cant say for sure), heart failure (not pumping forcefully enough), parts of the heart that are too big, congenital heart defects (birth defects), problems with the heart valves, pericarditis (inflammation of the sac around the heart).