Thanks again for all your help
When we are in the embryonic phase, our heart still consists of a sponge-like web of muscle fibers.
When we get older, the heart muscle becomes more solid.
When this conversion process of sponge-like to solid (compact) does not or only limited takes place, the heart (an especially the left ventricle) will keep a certain amount of that spongy tissue.
This spongy tissue does not perform such a good pumping task as the solid tissue can, which can cause breathlessness, fatigue, etc.
The ratio of compact and non-compact tissue is measured in the echo and in your case reported as R 1:1.5.
Medication like ACE inhibitors, beta blockers and aspirin are often prescribed to relieve the pressure on the heart.
Talk to your cardiologist about the consequences for you.