Free Cardiac Arrest Checker Online – Check Symptoms

💜 1. What Is Cardiac Arrest?

Cardiac arrest is a sudden, unexpected loss of heart function, breathing, and consciousness. It occurs when the heart’s electrical system malfunctions, causing the heart to stop beating effectively. Blood stops flowing to the brain and other vital organs.

Without immediate treatment, cardiac arrest is fatal within minutes. Survival depends on early recognition, immediate CPR, and rapid defibrillation. This is why understanding the warning signs and acting fast is critical.

⚖️ 2. Cardiac Arrest vs Heart Attack

Many people confuse cardiac arrest with a heart attack. Here’s the key difference:

• Heart attack: A blockage in a coronary artery stops blood flow to part of the heart muscle. The person is usually conscious and may have chest pain, shortness of breath, and other symptoms.
• Cardiac arrest: The heart suddenly stops beating due to an electrical malfunction. The person collapses, becomes unresponsive, stops breathing normally, and has no pulse.

A heart attack can lead to cardiac arrest, but cardiac arrest can also happen without any prior heart attack — especially in young people with undiagnosed heart conditions.

🔍 3. Warning Signs

Cardiac arrest often occurs without warning. However, some people experience warning signs in the minutes or hours before the event:

• Chest discomfort — pressure, tightness, or pain
• Shortness of breath — sudden difficulty breathing
• Dizziness or lightheadedness — feeling faint or unsteady
• Racing or pounding heartbeat — palpitations
• Nausea or vomiting — feeling sick
• Sudden weakness — overwhelming fatigue
• Blurred vision — sudden changes in sight

If these signs appear alongside collapse or unresponsiveness, treat it as a cardiac arrest emergency and act immediately.

🔗 4. Chain of Survival

The Chain of Survival is a sequence of actions that maximise the chance of survival from cardiac arrest:

1. Recognise the emergency — check for responsiveness and normal breathing.
2. Call emergency services — tell them someone is in cardiac arrest.
3. Start CPR immediately — push hard and fast in the centre of the chest (100–120 compressions per minute).
4. Use an AED — if available, use an automated external defibrillator as soon as possible.
5. Continue until help arrives — do not stop CPR unless the person recovers or trained help takes over.

🩺 5. How the Checker Works

This cardiac arrest checker is a simple educational screening tool:

1. Select any signs or symptoms you have observed or experienced.
2. Answer two quick questions about timing and risk factors.
3. The tool calculates a weighted risk score and provides clear, plain-language guidance.

All calculations run in your browser. Nothing is stored or shared. The tool is completely private and free to use.

📋 6. Major Risk Factors

Certain factors increase the risk of cardiac arrest:

• Coronary artery disease — the leading cause of cardiac arrest
• Previous heart attack — scar tissue can disrupt electrical signals
• Heart failure — weakened pumping function
• Arrhythmias — irregular heart rhythms such as ventricular fibrillation
• Cardiomyopathy — disease of the heart muscle
• Severe electrolyte imbalance — e.g., low potassium or magnesium
• Drug overdose — especially stimulants
• Family history — sudden cardiac death in a close relative

⏱️ 7. Why Every Second Counts

During cardiac arrest, the brain can begin to suffer damage within 3–4 minutes without oxygen. For every minute that CPR and defibrillation are delayed, the chance of survival drops by approximately 7–10%.

Bystander CPR can double or triple survival rates. If you are trained, act immediately. If you are not trained, emergency dispatchers can guide you through compression-only CPR.

Early action saves lives. Trust your instincts — if someone is unresponsive and not breathing normally, act now.