Acute coronary syndrome and heart attacks
Acute coronary syndrome (ACS) is when the arteries that carry blood, oxygen, and nutrients get blocked. Heart attacks are a form of ACS. They occur when your heart doesn’t get enough blood supply. A heart attack is also known as a myocardial infarction.
The three types of heart attacks are:
- ST segment elevation myocardial infarction (STEMI)
- non-ST segment elevation myocardial infarction (NSTEMI)
- coronary spasm, or unstable angina
STEMI: The classic or major heart attack
When most people think of a heart attack, they often think of a STEMI. A STEMI occurs when a coronary artery becomes completely blocked and a large portion of the muscle stops receiving blood. It’s a serious heart attack that can cause significant damage.
Symptoms and signs of a STEMI
A STEMI has the classic symptom of pain in the center of the chest. This chest discomfort may be described as a pressure or tightness rather than a sharp pain. Some people who experience STEMIs also describe feeling pain in one or both arms or their back, neck, or jaw.
Other symptoms that may accompany chest pain include:
- shortness of breath
- breaking out in a cold sweat
NSTEMI heart attacks
Unlike in a STEMI, the affected coronary artery is only partially blocked in a NSTEMI. A NSTEMI won’t show any change in the ST segment on the electrocardiogram.
A coronary angiography will show the degree to which the artery is blocked. A blood test will also show elevated troponin protein levels. While there may be less heart damage, an NSTEMI is still a serious condition.
CAS, silent heart attack, or heart attack without blockage
The coronary artery spasm is also known as a coronary spasm, unstable angina, or silent heart attack. The symptoms, which can be the same as a STEMI heart attack, may be mistaken for muscle pain, indigestion, and more. It occurs when one of the heart’s arteries tightens so much that blood flow stops or becomes drastically reduced. Only imaging and blood test results can tell your doctor if you’ve had a silent heart attack.
There is no permanent damage during a coronary artery spasm. While silent heart attacks aren’t as serious, they do increase your risk of another heart attack or one that may be more serious.
Treatments for all types of heart attacks
If your doctor suspects a heart attack, you may be treated immediately with:
- aspirin to prevent blood clotting
- nitroglycerin to relieve chest pain and improve blood flow
- oxygen therapy
After your doctor confirms the heart attack, they will prescribe medications. They may recommend surgery, if needed.
Medications for heart attacks
Less severe heart attacks may be treated with medication. Your doctor will prescribe you medications based on your condition, risk factors, and overall health. These drugs may include:
- clot busters to dissolve clots that are blocking arteries
- blood pressure medications to help reduce the heart’s workload and control blood pressure
- blood thinners to prevent blood clots
- statins to help lower LDL cholesterol
Surgical treatment for major heart attacks
Grafting: A blocked artery may also be treated with coronary artery bypass grafting, sometimes referred to as bypass surgery. In this procedure, a blood vessel is taken from elsewhere in the body and attached, or grafted, onto the blocked artery. With this, blood flow can be rerouted around the blockage.
Stent: A stent is a tiny, flexible, mesh tube that is placed at the site of the blockage. This opens up your blocked artery for normal blood flow. The plaque is pressed against the wall of the artery and the stent allows blood to pass through it.
Heart attack recovery and outlook
Your recovery from a heart attack will depend on its severity and how it was treated. It can take anywhere from one week to several weeks before you can return to all your regular activities, especially anything involving heavy lifting.
Treating a heart attack promptly and effectively minimizes the damage. Your chances of a better outcome also improve if you do cardiac rehabilitation. Cardiac rehabilitation is a multiweek program of exercise routines, nutrition counseling, and learning about heart medications and lifestyle changes.
What increases your risk of a heart attack?
The risk factors for STEMI and NSTEMI are the same:
- high levels of LDL (“bad”) cholesterol
- high blood pressure
- sedentary lifestyle
- advanced age
There are also risks associated with gender. For example, until age 55 or so, men are at a higher risk of heart attack. After menopause, though, women tend to have similar risks as men. Also, men tend to have problems in the heart’s larger arteries, while women often experience blockage in the smaller arteries of the heart.
Read more on: heart