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It is difficult to assess life expectancy - it depends upon ejection fraction
of heart / valves’ integrity and function / wall of the chambers / arrhythmia
, their nature and frequency / renal function / response to medicines . Personal habits, family history, or co-morbidities also influence the outcome...There is hope and you have a long way to go... The treating doctor alone can suggest based on his assessment of the situation.
Further deterioration can be prevented or postponed by aggressive management.
Wishing speedy recovery