What Are The Symptoms of Cardiac Arrest?

5 min read 2026-06-14

Cardiac arrest is one of the most time-sensitive medical emergencies a person can face.1 The most common symptom of cardiac arrest is chest pain.

With a global mortality rate exceeding 90%, learning what the symptoms of cardiac arrest are can be the difference between life and death.

How Does Cardiac Arrest Happen?

Cardiac arrest is the sudden cessation of cardiac activity, causing the person to become unresponsive, with no normal breathing and no signs of circulation.

It is typically triggered by a disruption in the heart's electrical signals, most often ventricular fibrillation, where the heart quivers rather than pumps.

Warning Symptoms Of Cardiac Arrest

Warning signs may appear before cardiac arrest, but are often ignored or unnoticed. Survivors may not recall symptoms due to amnesia, but reports from others show chest pain is the most common sign.

This is the list of other symptoms of cardiac arrest:

● Chest pain

● Syncope (fainting)

● Shortness of breath (dyspnea)

● Discomfort, tightness, and pressure

● Palpitations

● Dizziness

● Nausea or vomiting

● Unusual fatigue

● Sudden sweating (diaphoresis)

● Weakness

● Elevated BP

● Sensorineural deafness

When to Seek Immediate Help?

If chest discomfort is accompanied by sudden breathlessness, cold sweating, dizziness, or a racing heartbeat, do not wait. Call emergency services right away.

Early Awareness, Better Outcomes

Recognising the symptoms of cardiac arrest early is important for survival. If you or someone nearby experiences sudden chest discomfort, breathlessness, or loss of consciousness, act immediately.

Call emergency services, perform CPR if trained, and use an AED if available. Routine cardiac check-ups, blood pressure monitoring, and a heart-healthy lifestyle remain the most effective tools for prevention.

Disclaimer

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