Myocardial necrosis is usually irreversible, so stenting does not restore the necrotic myocardium.
Coronary artery occlusion leads to myocardial ischemic-hypoxic necrosis, which usually occurs in a small amount 20-30 minutes after occlusion, and then coagulative necrosis occurs after 1-2 hours.
Timely implantation of a stent to open the diseased vessel and restore myocardial perfusion can save the dying myocardium and prevent extensive myocardial necrosis and thus save lives, but it has no restorative effect on the already necrotic myocardium.
The necrotic myocardium will gradually fibrose after 1-2 weeks, and then form a chronic scar that heals after 6-8 weeks. Therefore, implanting a stent in a timely manner cannot reverse the necrosis of the myocardium, but it can prevent the condition from deteriorating.
Myocardial infarction is a great threat to life safety, so patients must maintain good habits in daily life and consult a doctor in time to prevent aggravation and deterioration of the condition.