Written by: Dr Subita Alagh
12 June 2025
Many times, cardiac arrest is mistaken for a heart attack. Though both conditions affect the heart, they aren't the same.
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Let’s break down the key differences between a cardiac arrest and a heart attack.
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It is an electrical problem when heart suddenly stops beating.
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It’s a circulation problem caused by a blocked artery that reduces blood flow to the heart.
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The heart suddenly stops beating due to an irregular rhythm (arrhythmia), cutting off blood flow to the brain and vital organs.
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A blocked artery prevents oxygen-rich blood from reaching the heart. If not treated quickly, parts of the heart muscle begin to die.
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– Gasping for breath – Unresponsiveness - Sudden collapse or death if no CPR given immediately
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– Discomfort in the chest – Shortness of breath – Cold sweats – Nausea/vomiting Symptoms can build up over hours or days.
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A heart attack can trigger cardiac arrest. But not all heart attacks lead to arrest. Other heart conditions may also cause sudden arrest.
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