Dr. Tom Talks #5: What is a Heart Attack?

Dr. Tom Talks #5: What is a Heart Attack?


Welcome to “Dr. Tom Talks”, powered by BioDigital.
Today: What is a heart attack, in 60 seconds or less? A heart attack is simply where the
heart muscle or myocardium dies. Why does that happen? Here’s one of the coronary arteries;
it’s next to the blue coronary vein and it gets blocked and that area of the heart actually
dies. Why does that happen? If we zoom into one of the coronary arteries here, you have
the endothelium or the lining and that can get damaged through things like smoking, having
a bad diet, and once it gets damaged it lets these fatty substances get in and accumulate.
This is a fatty plaque. That can grow and grow and grow and it makes this endothelium
weaker until it can actually burst. Once it bursts it can form a blood clot there which
means no blood gets to the rest of the heart. That is a heart attack in 60 seconds or less.