She had one four years ago, and quit smoking.
Her cholesterol was 140 when she had the attack last week.HDL was above the acceptable range, and LDL was well below. It's been at those levels for more than four years.
The doctor put three stents in her atreries 4 years ago. One of them was blocked, so he put another one in last week and said she'll be fine.
What caused that stent to be blocked?
More important, what must she do to prevent another heart attack?