My husband had a similar experience (young, in his 30s, caused by a virus) and about 8 months later, despite grim and conflicting information like I am sure you are receiving, his heart function recovered to the normal range!!! Here is what he did (very similar to the list provided by jrbon):
1) Had an excellent team of doctors specializing in HF
2) Took a medication regimen that included beta blockers and ACE inhibitors, as well as a diuretic
3) Severely reduced his sodium intake (major life change)
4) Did as much aerobic exercise as he could tolerate (he did not do any resistance training, aside for some push ups and situps...but mainly he focused on aerobic exercise)
5) Monitored his weight daily and contacted his doctor/adjusted his medication if there were any significant gains
6) Monitored his HR and BP closely (daily)
7) Kept a close eye on his aerobic capacity, noted any times he felt more short of breath than normal, and followed up with his doctor frequently.
If your HF was diagnosed quickly and you were put on medication quickly, you CAN recover. Good luck!
1) Get a cardiologist with experience in HF
2) Reduce or better stop salt intake.
3) Exercise only as instructed by your doctor.
4) Take all your medicaments
5) Follow the style of live indicated by your dr.
6) Sleep at least 7 hours/day
7) Check ALL medicaments or complements before taking them. Usual medicaments for pain, could or flu can be counter indicated in your situation.
8) Check your weight daily and look for increase in 3-4 days in a row that can indicate fluid accumulation.
Hope this help.
Jesus