and also, what does the Ejection Fraction being borderline at 50-55% mean in relation to that?
"grossly normal" means that there are no obvious abnormalities. Which means that the various parts "walls" are contracting in a uniform fashion. The ejection fraction is usually about 60-65% but 50-55% is nothing to worry about.
it refers to the fact that the walls on the left side of the heart are significantly thicker than that of the right side given that the heart curves to the left because ur left lung is smaller than ur right.
Ask your doctor...
that sounds like a normal echocardiogram