What Happens When the Heart Stops Beating?

Introduction

When the heart stops beating, it is a critical emergency known as cardiac arrest. This condition prevents oxygenated blood from reaching vital organs, including the brain, leading to unconsciousness within seconds and potential death if not treated immediately.

Causes of Cardiac Arrest

Several conditions can lead to the heart stopping: - Heart attack (myocardial infarction) – Damage to the heart muscle due to blocked arteries - Arrhythmias – Irregular heart rhythms, such as ventricular fibrillation - Heart failure – Weakened heart unable to pump blood effectively - Severe electrolyte imbalances – Potassium, calcium, or sodium abnormalities - Pulmonary embolism – A blood clot blocking blood flow to the lungs - Severe blood loss or shock

Symptoms of Cardiac Arrest

A person experiencing cardiac arrest may: - Suddenly collapse - Stop breathing or experience gasping breaths - Have no pulse - Lose consciousness

Emergency Response – What to Do?

  1. Call Emergency Services Immediately (911 or 112 in Europe)
  2. Start CPR (Cardiopulmonary Resuscitation):
    • Push hard and fast in the center of the chest (100-120 compressions per minute)
    • If trained, give rescue breaths after every 30 compressions
  3. Use an AED (Automated External Defibrillator) if available:
    • Follow voice prompts to deliver a shock if necessary
  4. Continue CPR until medical help arrives

Prevention

To reduce the risk of cardiac arrest: - Manage risk factors (blood pressure, diabetes, cholesterol) - Follow a heart-healthy lifestyle: exercise, balanced diet, avoid smoking/alcohol - Seek medical attention for unexplained fainting or palpitations

Early recognition and immediate response can save lives!

Source recommendations

1. American Heart Association Guidelines on Cardiopulmonary Resuscitation (CPR)

  1. https://cpr.heart.org/en/resuscitation-science/cpr-and-ecc-guidelines
  2. https://professional.heart.org/en/science-news/2020-aha-guidelines-for-cpr-and-ecc
  3. https://cpr.heart.org/en/
  4. https://www.ahajournals.org/doi/10.1161/CIR.0000000000000918
  5. https://cpr.heart.org/-/media/cpr-files/cpr-guidelines-files/highlights/hghlghts_2020_ecc_guidelines_english.pdf

2. European Resuscitation Council Guidelines on Advanced Life Support

  1. https://pubmed.ncbi.nlm.nih.gov/33773825/
  2. https://cprguidelines.eu/assets/guidelines/European-Resuscitation-Council-Guidelines-2021-Ad.pdf
  3. https://www.sciencedirect.com/science/article/pii/S0300957215003287
  4. https://www.erc.edu/courses/advanced-life-support
  5. https://www.sciencedirect.com/science/article/pii/S0300957221000629

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