A heart attack is something that blocks an artery. Either a blood clot or a plaque that has broken away from an artery in the heart or some other part of the body and thus blocks the arteries in the heart. Heart failure is what it says.
Heart attack is an emergency as can lead to cardiac arrest and sudden death. Heart failure can be ongoing for several years and treated with drugs or surgical procedure.
A heart attack is an acute condition requiring immediate treatment. Heart failure is used to describe a chronic condition, in which the heart is not doing its job as well as it should, and is amenable to treatment, drug therapy or surgery.
They might have been saying she was in heart failure ( shortness of breath, inability to lie flat, ankle swelling ) as a result of having had a heart attack ( block of a small artery in the heart )
No certainly not.......if angiograms shoe that her heart failure is due to insufficient blood passing through her coronary arteries, then she may be offered stenting or bypass surgery.
more than 20 years ago I knew a 90 YO who had turned down a pacemaker at age 85. He was in bed and couldn't do a thing till he changed his mind and they paced him (had been in hospital, they kept long stay patients then.) Went home to live with his daughter happy as Larry.