Understanding ICD and Heart Health

Introduction

An Implantable Cardioverter Defibrillator (ICD) is a small medical device placed under the skin, usually below the collarbone. It helps to detect and correct life-threatening heart rhythm disorders .

Why is an ICD Needed?

ICDs are used for individuals who are at risk of sudden cardiac arrest (SCA) due to conditions such as: - Ventricular tachycardia (VT) – a dangerously fast heart rhythm. - Ventricular fibrillation (VF) – a chaotic, ineffective heart rhythm. - A history of prior cardiac arrest or fainting due to abnormal rhythms . - Certain genetic heart conditions like Long QT Syndrome (LQTS) or Brugada Syndrome .

How Does an ICD Work?

  1. Monitoring: The ICD constantly checks heart rhythm.
  2. Pacing: If the heart beats too slowly, it provides electrical pulses to pace it.
  3. Cardioversion & Defibrillation: If a life-threatening rhythm is detected, the ICD gives an electrical shock to restore normal rhythm.

Life with an ICD

  • Patients need regular check-ups to ensure proper function.
  • Certain electronic devices (e.g., some MRI machines) can interfere with ICDs.
  • Physical activity is usually safe, but contact sports might pose risks.
  • Emotional support is essential, as living with an ICD can cause anxiety and depression .

Conclusion

An ICD can be a lifesaving device for individuals with severe heart rhythm disorders. Regular medical follow-up and lifestyle adjustments help ensure safety and improve quality of life .

Source recommendations

1. American Heart Association Guidelines on ICDs

  1. https://www.heart.org/en/health-topics/arrhythmia/prevention--treatment-of-arrhythmia/implantable-cardioverter-defibrillator-icd
  2. https://www.ahajournals.org/doi/10.1161/CIR.0000000000000549
  3. https://www.heart.org/en/health-topics/arrhythmia/prevention--treatment-of-arrhythmia/devices-that-may-interfere-with-icds-and-pacemakers
  4. https://www.ahajournals.org/doi/10.1161/CIR.0000000000001063
  5. https://professional.heart.org/en/science-news/-/media/832EA0F4E73948848612F228F7FA2D35.ashx

2. European Society of Cardiology Guidelines on Implantable Defibrillators

  1. https://pubmed.ncbi.nlm.nih.gov/29191938/
  2. https://www.escardio.org/Journals/E-Journal-of-Cardiology-Practice/Volume-12/The-subcutaneous-defibrillator-who-stands-to-benefit
  3. https://academic.oup.com/eurheartj/article/39/21/1883/4939241
  4. https://www.escardio.org/Guidelines/Clinical-Practice-Guidelines/Ventricular-Arrhythmias-and-the-Prevention-of-Sudden-Cardiac-Death
  5. https://academic.oup.com/eurheartj/article/34/29/2281/401445

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