help pls

I was diagnosed with lvh and lbbb and after I had a catheterization they found out that my heart was slow. The squeeze is 25% which they said 60% was normal.My first question is they told me it might have been caused by a virus that attacked my heart what kind of virus that I dont know I had attack my heart? I had a echocardiogram 2 weeks ago and I got a letter stating this Your heart function is moderately globally reduced although somewhat better then when the cath was done. What does that mean somewhat better? I had a second opinion and they told me that if my meds didnt work I would eventually need a heart transplant is that a worst case scenaro? Are there meds out there that will help me this is seriously scary.

[kenkeith]

The doctor's opinion is that you have heart muscle damage (globally, rAther than a specific location).  The ejection fraction (amount of blood pumped with each heartbeat) is normal at 50 to 70%, and with heart muscle damage that would explain the low EF of 25%.  

Six years ago I had a left ventricle enlargement, and a silent heart attack (didn't know I had had a heart attack until congested heart failure) that caused my EF to be between 19 to 29% (below 29% is considered heart failure mode).  There appeared to be heart muscle damage.  Medication reduced the heart's workload and that help my heart return to normal size and the EF is now at 59%.  Also, an increase of blood supply to the area of the damaged heart cells revived the heart cells (damaged heart cells can be necrotic (dead) or in hypernation..