Heart Attack vs Cardiac Arrest: Vital Warning Signs & First Aid

Disclaimer: This content on heart attack vs cardiac is for informational purposes only and does not constitute medical advice. If you suspect a heart attack or cardiac arrest, call your local emergency number immediately.

In a medical emergency, every second counts. Because a heart attack vs cardiac arrest requires very different responses, knowing the distinction can save a life. Misunderstanding these warning signs of a heart attack or failing to provide proper cardiac arrest first aid often results in tragic outcomes.

What to Do Immediately

• If the person is unconscious and not breathing: Call emergency services, start CPR, and find an Automated External Defibrillator (AED) immediately.
• If the person is conscious but showing heart attack symptoms: Call emergency services, keep the person calm and seated, and help them take aspirin if advised by a dispatcher.

Understanding the Heart Attack vs Cardiac Arrest Difference

While often used interchangeably, these terms describe different physiological failures within the body:

• Heart Attack (A “Plumbing” Problem): This occurs when blood flow to a part of the heart is blocked, usually by a clot. The heart muscle begins to die due to a lack of oxygen, but the heart usually continues to beat.
• Cardiac Arrest (An “Electrical” Problem): This occurs when the heart’s electrical system malfunctions, causing it to stop beating abruptly. The person loses consciousness, stops breathing, and has no pulse.

Recognising Common Warning Signs of a Heart Attack

Symptoms vary, especially between men and women, but common indicators include:

• Chest Discomfort: You may feel pressure, squeezing, fullness, or pain in the centre of the chest.
• Radiating Pain: Discomfort often spreads to the jaw, neck, back, or one/both arms.
• Shortness of Breath: This often occurs with or before chest discomfort starts.
• Other Signs: Sudden cold sweats, nausea, lightheadedness, or unexplained fatigue are also key indicators.

Identifying Symptoms of Sudden Cardiac Arrest

Unlike a heart attack, where a person may remain conscious, cardiac arrest is sudden and drastic:

• Sudden Collapse: The person drops to the ground instantly without warning.
• No Pulse: There is no detectable heartbeat when checking the wrist or neck.
• No Breathing: The person is not breathing or is only “gasping” for air.
• Unresponsiveness: They do not wake up or react when you shake them or speak to them.

First Aid for Heart Attack: A Step-by-Step Guide

If you suspect someone is suffering from a heart attack, follow these steps:

1. Call Emergency Services: Do not drive them yourself unless absolutely necessary.
2. Stay Calm and Seated: Have the person sit down to reduce the physical strain on their heart.
3. Loosen Clothing: Ensure they can breathe as easily as possible.
4. Administer Aspirin: If they are not allergic, ask them to chew a regular-strength aspirin to help thin the blood and improve flow.
5. Monitor: Keep track of their condition until help arrives. If they lose consciousness, be prepared to begin CPR immediately.

Performing CPR and AED Use for Cardiac Arrest First Aid

If the person has collapsed and is not breathing, your quick action is vital:

• Hands-Only CPR: Place your hands in the centre of the chest and push hard and fast (100–120 beats per minute). You are manually acting as the heart pump.
• Use an AED: If an AED is available, turn it on immediately. It will provide clear voice prompts. Attach the pads to the patient’s bare chest as shown on the device. It will automatically analyse the heart rhythm and instruct you if a shock is required.
• Continue until Help Arrives: Do not stop until professional responders take over or the person shows signs of life.

For more information on emergency guidelines, visit the American Heart Association.