Can You Perform CPR During a Heart Attack?
Short answer
You cannot perform CPR during a heart attack because CPR is intended for cardiac arrest, when the heart stops beating. A heart attack involves blocked blood flow to the heart but the heart usually still beats. Instead, call 911 immediately and provide appropriate first aid for a heart attack while waiting for emergency help.
What Is a Heart Attack and How Does It Differ from Cardiac Arrest?
A heart attack, medically known as a myocardial infarction, occurs when the blood supply to part of the heart muscle is blocked. Typically, this blockage is caused by a clot in one or more coronary arteries that supply oxygen-rich blood to the heart. When the heart muscle does not get enough oxygen, cells begin to die, causing chest pain and other symptoms.
The heart usually continues to beat during a heart attack, although it may beat irregularly or weakly. This means that the person may still have a pulse and be conscious or semi-conscious.
Cardiac arrest is a different emergency where the heart suddenly stops pumping blood effectively. This could be due to an electrical problem that causes the heart to stop beating or to beat erratically. Without blood flow, the brain and other organs quickly begin to fail, causing loss of consciousness and absence of pulse.
Understanding this difference is vital for knowing when CPR is needed. CPR is meant to artificially pump blood when the heart has stopped (cardiac arrest), but it is not appropriate if the heart is still beating, as in most heart attacks.
Why Can’t You Perform CPR During a Heart Attack?
CPR (cardiopulmonary resuscitation) involves chest compressions and rescue breaths to manually circulate oxygenated blood when the heart is no longer beating properly. During a heart attack, the heart muscle is damaged due to blocked blood flow but typically continues beating, so chest compressions are not necessary and could cause harm.
For example, if someone is clutching their chest, complaining of pain, and still awake and breathing, performing CPR could cause broken ribs or other injuries without benefit. CPR is designed for unconscious individuals who have no pulse or normal breathing.
It’s important to recognize the signs that indicate when CPR should start. If the person’s heart stops completely following a heart attack, or if they become unresponsive and stop breathing, then CPR is crucial. Until that happens, other first aid measures are more appropriate.
What Are the Signs and Symptoms of a Heart Attack to Watch For?
Recognizing a heart attack quickly can save lives. Common signs include:
- Chest discomfort or pain, often described as pressure, squeezing, fullness, or aching, usually in the center or left side of the chest.
- Pain or discomfort spreading to the shoulders, neck, jaw, arms, or back.
- Shortness of breath, sometimes with chest discomfort.
- Nausea, lightheadedness, or cold sweat.
- Sudden fatigue or weakness.
If you see someone showing these symptoms, encourage them to sit down and rest while calling 911 immediately. Do not try to drive them to the hospital yourself unless absolutely necessary.
For example, if a person complains of chest pain and looks pale and sweaty, say: “I’m calling 911 now. Please sit down and try to stay calm. Do you have any heart medications with you?”
What Should You Do If Someone Is Having a Heart Attack?
If you suspect someone is having a heart attack, follow these steps carefully:
- Call 911 right away. Do not wait or try to diagnose the problem yourself. Emergency responders can provide advanced care quickly.
- Make the person comfortable. Have them sit or lie down in a position that relieves chest pressure, often sitting with knees bent.
- Ask about medications. If the person has prescribed nitroglycerin for chest pain, help them take it as directed.
- Give aspirin if appropriate. If the person is conscious, not allergic, and able to chew and swallow, offer one adult aspirin (usually 325 mg) to chew slowly. Aspirin helps prevent clot growth.
- Monitor their condition. Stay with the person and watch for changes in consciousness or breathing.
- Be ready to perform CPR. If the person becomes unresponsive and stops breathing normally, start CPR immediately.
For example, you might say to the person, “I’m calling 911 and will stay with you. Try to stay calm and breathe slowly.” If they lose consciousness, carefully check breathing and pulse, and begin CPR if needed.
When Is CPR Necessary for Heart-Related Emergencies?
CPR is necessary if the heart stops beating effectively, a condition called cardiac arrest, which can occur suddenly during or after a heart attack. Signs that CPR is needed include:
- The person is unresponsive and does not respond to shouting or shaking.
- They are not breathing or are only gasping.
- There is no pulse.
In this situation, CPR helps circulate oxygenated blood to the brain and other vital organs until professional help arrives. Without CPR, brain damage can occur within minutes.
If you find someone collapsed, loudly ask, “Are you okay?” If no response, check breathing by looking for chest rise and feeling for breath on your cheek. If no normal breathing, call 911 and start chest compressions immediately.
How Do You Perform CPR? A Step-by-Step Example
Here is a simple guide to performing CPR on an adult:
- Position the person on their back on a firm surface.
- Place the heel of one hand on the center of the chest (on the lower half of the breastbone).
- Place your other hand on top and interlock fingers.
- Keep your arms straight and shoulders directly above your hands.
- Push hard and fast: compress the chest at least 2 inches deep at a rate of 100 to 120 compressions per minute. Allow the chest to fully recoil after each compression.
- Give rescue breaths if trained: after 30 compressions, tilt the head back, lift the chin, pinch the nose, and give two breaths lasting about 1 second each, watching for chest rise.
- Continue cycles of 30 compressions and 2 breaths until emergency responders arrive or the person starts breathing.
For example, imagine a person collapses in a park. They are unresponsive and not breathing normally. You call 911, then begin chest compressions as described, counting slowly: “One, two, three…” at a steady rhythm. After 30 compressions, you give two rescue breaths.
If you are untrained or uncomfortable giving rescue breaths, performing hands-only CPR (continuous chest compressions) is still very effective.
What Are Common Misunderstandings About CPR and Heart Attacks?
Many people confuse heart attacks with cardiac arrest and believe CPR is appropriate for all heart emergencies. This confusion can delay calling 911 or cause unnecessary CPR attempts on conscious individuals.
Another misconception is that CPR can restart a heart during a heart attack; actually, CPR supports circulation during cardiac arrest but does not treat the actual heart attack.
Some think CPR is dangerous, but it is generally safe when performed on unresponsive individuals without breathing. Broken ribs can occur but are less harmful than not performing CPR when needed.
Understanding these distinctions helps you respond appropriately and confidently in emergencies.
What Should You Do After Providing First Aid or CPR?
After calling 911 and providing first aid or CPR, stay with the person until help arrives. Provide rescuers with details about the person’s symptoms, medications, allergies, and first aid steps you took.
If the person regains consciousness, reassure them and encourage them to stay calm. Avoid giving food or drink unless instructed by medical personnel.
If you performed CPR, you may feel shaken afterward; consider taking a refresher CPR course to build confidence and skills.
For someone who survived a heart attack, follow-up with a healthcare provider is essential to manage risk factors like cholesterol, blood pressure, and lifestyle.
Where Can You Learn More About CPR and First Aid for Heart Attacks?
Formal training is the best way to be prepared for emergencies. Organizations like the American Red Cross offer CPR and first aid courses that teach:
- How to recognize heart attack and cardiac arrest symptoms.
- When and how to perform CPR and use an automated external defibrillator (AED).
- How to provide first aid safely and effectively.
Many courses include hands-on practice and certification. Local community centers, workplaces, and health departments often host classes.
Additional resources offer detailed instructions and support, such as How to Perform CPR Step-by-Step and How to Give First Aid for a Heart Attack. Learning these skills can save lives.
Frequently asked questions
Can CPR save someone having a heart attack?
CPR is only effective if the heart stops beating, which is cardiac arrest. During a heart attack, the heart usually still beats, so CPR is not helpful unless cardiac arrest occurs. Calling 911 and providing first aid is critical.
How do I know if someone needs CPR or just first aid for a heart attack?
If the person is conscious and breathing, provide first aid and call 911. If they become unresponsive and stop breathing normally, start CPR immediately.
Can CPR harm someone who doesn’t need it?
Performing CPR on someone who is conscious and breathing can cause injuries like broken ribs. CPR should be reserved for unresponsive individuals without normal breathing.
What if I don’t know how to perform rescue breaths?
Hands-only CPR (continuous chest compressions) is still very effective for adults. Focus on firm, fast chest compressions until help arrives.
Should aspirin be given to someone with chest pain?
If the person is conscious, not allergic, and able to chew and swallow, giving one adult aspirin can reduce blood clotting during a heart attack. Always call 911 first.
Can I perform CPR on myself if I have a heart attack?
Performing CPR on yourself during a heart attack or cardiac arrest is not possible. If you experience symptoms, call emergency services immediately and try to stay calm and seated.