What Is Heart Attack? Symptoms, Causes, Treatment, and Medications
A heart attack (myocardial infarction) is a medical emergency in which blood flow to part of the heart muscle is suddenly blocked, usually by a clot in a coronary artery. Warning signs include chest pain or pressure, shortness of breath, and pain spreading to the arm, jaw, or back. Call 911 immediately if you suspect a heart attack. Treatment includes aspirin, clot-dissolving or artery-opening procedures, and long-term medications.
Key Highlights
- A heart attack is a life-threatening emergency - call 911 immediately if you or someone else has chest pain, pressure, or other warning signs.
- A heart attack (myocardial infarction) happens when blood flow to part of the heart muscle is blocked, usually by a clot forming on cholesterol plaque in a coronary artery.
- Common signs include chest pain or pressure, shortness of breath, sweating, nausea, and pain spreading to the arm, back, neck, or jaw; symptoms can differ in women.
- Emergency treatment may include aspirin, nitroglycerin, clot-busting (thrombolytic) medicines, and procedures such as angioplasty with a stent to restore blood flow.
- Long-term medications after a heart attack often include aspirin, a P2Y12 inhibitor (clopidogrel or ticagrelor), a statin, a beta-blocker, and an ACE inhibitor.
- PriceMyMeds discount coupons can help reduce the cost of heart medications such as clopidogrel, atorvastatin, and metoprolol at participating pharmacies.
What Is Heart Attack?
A heart attack, medically called a myocardial infarction, happens when blood flow to a part of the heart muscle is suddenly blocked. Without oxygen-rich blood, that part of the heart muscle begins to die, which is why a heart attack is a medical emergency that requires calling 911 right away.
Most heart attacks are caused by coronary artery disease. Over time, a fatty substance called plaque builds up in the walls of the coronary arteries. When plaque ruptures, a blood clot can form and block blood flow to the heart.
The faster blood flow is restored, the less damage the heart suffers. This is why recognizing the warning signs and getting emergency care quickly can save your life.
Key Facts:
- Generic names: aspirin, clopidogrel, ticagrelor, atorvastatin, metoprolol, lisinopril, nitroglycerin, alteplase
- Drug classes: antiplatelets (aspirin, P2Y12 inhibitors), statins, beta-blockers, ACE inhibitors, nitrates, thrombolytics
- FDA approvals: ticagrelor (Brilinta) is FDA approved to reduce cardiovascular events in acute coronary syndrome; aspirin, statins, beta-blockers, and ACE inhibitors are long-established therapies
- Typical cost: many generics such as aspirin, atorvastatin, metoprolol, and lisinopril cost about $4-$30 per month
- Common uses: treatment after a heart attack and prevention of future cardiovascular events
Heart Attack vs. Cardiac Arrest: Understanding the Difference
A heart attack and a cardiac arrest are not the same thing, though they are related. A heart attack is a circulation problem - blocked blood flow to the heart muscle - and the person is usually awake. A cardiac arrest is an electrical problem in which the heart suddenly stops beating and the person collapses and stops breathing. A heart attack can sometimes trigger a cardiac arrest. Both are emergencies: call 911 immediately, and for cardiac arrest begin CPR and use an AED if available.
What You Need to Know
Understanding Heart Attack: Causes, Symptoms, Diagnosis, Treatment, and Prevention
1.What Are the Causes of Heart Attack?
Most heart attacks are caused by coronary artery disease, in which plaque builds up in the arteries that supply the heart. A heart attack occurs when a plaque ruptures and a blood clot blocks blood flow to the heart muscle.
Main Cause
- Coronary artery disease - cholesterol and other substances form plaque that narrows the coronary arteries; a clot on a ruptured plaque can suddenly block blood flow
- Coronary artery spasm - a sudden tightening of an artery that briefly cuts off blood flow
- Less commonly, a spontaneous coronary artery tear (SCAD)
Major Risk Factors
- High blood pressure
- High LDL cholesterol
- Diabetes
- Smoking and tobacco use
- Obesity and physical inactivity
- Unhealthy diet
Other Risk Factors
- Older age
- Family history of early heart disease
- Chronic stress
- Excessive alcohol use
- Certain conditions such as preeclampsia during pregnancy
Note: Some risk factors, such as age and family history, cannot be changed, but many - including blood pressure, cholesterol, smoking, and diabetes - can be managed with lifestyle changes and medication to lower your risk.
2.What Are the Symptoms of Heart Attack?
The most common symptom is chest pain or discomfort, but heart attacks can cause a range of symptoms, and some are subtle. If you notice these signs, call 911 immediately - do not wait.
Common signs and symptoms include:
- Chest pain, pressure, tightness, squeezing, or aching in the center or left side of the chest
- Pain or discomfort spreading to one or both arms, the back, shoulders, neck, jaw, or upper belly
- Shortness of breath, with or without chest discomfort
- Cold sweat, nausea, or vomiting
- Lightheadedness, dizziness, or sudden weakness
- Unusual fatigue
Symptoms Can Differ in Women
Women are more likely than men to have symptoms without obvious chest pain, such as shortness of breath, nausea, vomiting, back or jaw pain, and unusual fatigue.
Silent Heart Attacks
Some heart attacks happen with very mild symptoms or none at all - called silent heart attacks - which are more common in older adults and people with diabetes.
How Long Do Heart Attack Symptoms Last?
Heart attack symptoms can start slowly and be mild, or come on suddenly and be severe, and they may come and go over several hours. Unlike angina, heart attack pain does not go away with rest or medication. Any chest pain lasting more than a few minutes is an emergency - call 911.
3.How Is Heart Attack Diagnosed?
A heart attack is diagnosed quickly in an emergency setting using a physical exam, an electrocardiogram (ECG), and blood tests. Treatment often begins even before the diagnosis is fully confirmed.
Emergency providers may ask:
- When did the symptoms start, and what do they feel like?
- Does the pain spread to the arm, jaw, or back?
- Do you have a history of heart disease, high blood pressure, or diabetes?
- What medications do you take?
Diagnostic tests include:
- Electrocardiogram (ECG or EKG) - measures the heart's electrical activity and can show a heart attack in progress
- Blood tests for cardiac troponin - a protein released when heart muscle is damaged
- Coronary angiography (cardiac catheterization) - uses contrast dye and X-rays to find blockages
- Echocardiogram - ultrasound to assess heart function
- Chest X-ray and continuous heart monitoring
These tests confirm the heart attack, show which artery is blocked, and guide immediate treatment such as angioplasty.
4.How Is Heart Attack Treated?
Heart attack treatment is a medical emergency aimed at restoring blood flow to the heart as fast as possible. Treatment starts in the ambulance or emergency department and continues with long-term medications.
Emergency Medications
- Aspirin - chewed or swallowed to help prevent further clotting (often given by emergency responders)
- Nitroglycerin - relieves chest pain and improves blood flow through the coronary arteries
- Thrombolytic (clot-busting) medicines such as alteplase - dissolve the clot when timely angioplasty is not available
- Oxygen therapy and pain relief as needed
Procedures to Restore Blood Flow
- Percutaneous coronary intervention (PCI), or angioplasty - a catheter opens the blocked artery, often placing a stent to keep it open
- Coronary artery bypass grafting (CABG) - surgery that reroutes blood around blocked arteries, sometimes needed for severe disease
3. Long-Term Medications After a Heart Attack
- Antiplatelets - aspirin plus a P2Y12 inhibitor such as clopidogrel (Plavix) or ticagrelor (Brilinta) to prevent new clots
- Statins - such as atorvastatin, to lower cholesterol and stabilize plaque
- Beta-blockers - such as metoprolol, to reduce the heart's workload
- ACE inhibitors - such as lisinopril, to lower blood pressure and protect the heart
Cardiac Rehabilitation
A supervised program of exercise, education, and lifestyle support helps people recover and lower the risk of another heart attack.
5.What Are the Complications of Heart Attack?
A heart attack can damage the heart muscle and lead to serious complications, especially if treatment is delayed. Getting emergency care quickly reduces the risk.
Possible complications include:
- Arrhythmias - abnormal heart rhythms that can be life-threatening
- Heart failure - the weakened heart cannot pump blood effectively
- Cardiogenic shock - the heart suddenly cannot supply enough blood to the body
- Cardiac arrest - the heart stops beating (requires immediate CPR and 911)
- Damage to heart valves or the heart wall
- Blood clots that can lead to a stroke
The amount of heart damage depends largely on how quickly blood flow is restored. This is why calling 911 at the first signs of a heart attack - rather than driving yourself or waiting - is critical. People who arrive by ambulance often receive faster, life-saving treatment.
6.How Can Heart Attack Be Prevented?
Many heart attacks can be prevented by managing risk factors and living a heart-healthy lifestyle. Prevention is important both for people who have never had a heart attack and for those recovering from one.
Heart-healthy lifestyle steps:
- Do not smoke, and avoid secondhand smoke
- Eat a diet rich in fruits, vegetables, whole grains, and lean protein, and low in saturated fat, salt, and added sugar
- Get regular physical activity - aim for about 150 minutes of moderate exercise a week
- Maintain a healthy weight
- Limit alcohol
- Manage stress and get enough sleep
Manage medical risk factors with your doctor:
- Keep blood pressure under control
- Lower high LDL cholesterol, often with a statin
- Manage diabetes and blood sugar
- Take prescribed heart medications exactly as directed
After a heart attack, taking medications such as aspirin, a P2Y12 inhibitor, a statin, a beta-blocker, and an ACE inhibitor as prescribed, along with cardiac rehabilitation, greatly lowers the risk of another event.
7.When to See a Doctor for Heart Attack
A heart attack is a medical emergency. Call 911 immediately if you or someone near you has warning signs - do not wait to see if they pass, and do not drive yourself to the hospital.
Call 911 right away if you notice:
- Chest pain, pressure, tightness, or squeezing that lasts more than a few minutes or comes and goes
- Pain spreading to the arm, back, neck, jaw, or upper belly
- Shortness of breath, with or without chest discomfort
- Cold sweat, nausea, lightheadedness, or sudden weakness
While waiting for emergency help:
- Call 911 first - emergency responders can begin treatment on the way and alert the hospital
- If advised and not allergic, chew an aspirin
- If the person is unresponsive and not breathing normally, begin CPR and use an AED if available
Never delay calling 911, taking aspirin (if advised), or doing anything else you think might help. People who arrive by ambulance often get faster treatment. Even if you are not sure it is a heart attack, it is safer to call 911 and be evaluated.
8.OTC vs. Prescription Heart Attack Medications: When Do You Need a Prescription?
A heart attack cannot be treated at home with over-the-counter products - it is an emergency that requires calling 911 and hospital care. Nearly all heart attack medications require a prescription and medical supervision.
Over-the-counter (OTC) role:
- Aspirin - the main OTC medicine relevant to a heart attack; it may be chewed during a suspected heart attack only if advised by emergency responders or your doctor, and taken long-term only when prescribed
Prescription required for:
- P2Y12 inhibitors - clopidogrel (Plavix), ticagrelor (Brilinta), prasugrel (Effient)
- Statins - atorvastatin, rosuvastatin, and others
- Beta-blockers - metoprolol, carvedilol
- ACE inhibitors - lisinopril, ramipril
- Nitroglycerin for chest pain
- Thrombolytics (clot busters) - given only in the hospital
Important: Do not start, stop, or change any heart medication on your own. If you think you are having a heart attack, call 911 immediately rather than trying to treat it yourself. Your care team will prescribe and adjust medications based on your condition.
Save on Your Medications
Prescription heart medications can vary in price depending on the drug and pharmacy, but many of the most important ones are available as affordable generics. Medications commonly prescribed after a heart attack - such as clopidogrel, atorvastatin, metoprolol, and lisinopril - are often low cost, while newer antiplatelets like ticagrelor can be more expensive. With PriceMyMeds discount coupons, patients may be able to reduce the cost of heart medications at participating pharmacies across the United States.
Simply search for your medication on PriceMyMeds, compare prices at pharmacies near you, and present your free coupon at the pharmacy counter to save. No insurance required.
Comparing medication prices and using discount coupons may help lower out-of-pocket costs for long-term heart medications. Taking these medications consistently is important, so lowering the cost can help you stay on treatment.
The Bottom Line
A heart attack is a life-threatening emergency in which blood flow to part of the heart muscle is blocked, usually by a clot in a coronary artery. The single most important thing to remember is to call 911 immediately at the first warning signs - chest pain or pressure, shortness of breath, or pain spreading to the arm, jaw, or back - because fast treatment saves heart muscle and lives.
Emergency treatment restores blood flow with aspirin, clot-busting medicines, or procedures such as angioplasty and stenting. Afterward, long-term medications - aspirin, a P2Y12 inhibitor, a statin, a beta-blocker, and an ACE inhibitor - along with cardiac rehabilitation and heart-healthy habits, greatly reduce the risk of another heart attack.
If you are prescribed heart medications, use PriceMyMeds to compare prices at nearby pharmacies and potentially save on your prescription costs. Staying on your medications is vital, and lowering the cost can help. No insurance or signup required.