if your EF in echo is 25 percent you must go to doctor and follow your problem,normal EF is between 55-75 %,and under 30% is very important problem,see your doctor and discuss with him,good luck
If you want to know more, you have no choice but to go back to your doctor with a notepad and list of questions. Only your doctor has examined you and has your history and enough information to explain what is going on.