Ventricular Fibrillation Quiz

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Osler Jay Justo Guzon

Osler Jay Justo Guzon, MD (Cardiology)

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Learn more about Ventricular fibrillation

Content updated on Nov 2, 2022

What is ventricular fibrillation?

Ventricular fibrillation is a type of abnormal heart rhythm (arrhythmia). During ventricular fibrillation, disorganized heart signals cause the lower heart chambers (ventricles) to twitch uselessly. As a result, the heart doesn't pump blood to the rest of the body.

Symptoms of ventricular fibrillation

  • Losing consciousness

  • Responses gradually getting weaker

  • Face is persistently pale and lips are purplish-blue

  • Feeling breathless

  • Chest pain before losing consciousness

Questions your doctor may ask to check for ventricular fibrillation

Your doctor may ask these questions to diagnose ventricular fibrillation

  • Have you currently regained consciousness after temporarily losing consciousness?

  • Are your responses gradually getting weaker?

  • Is your face pale and lips purplish-blue all the time?

  • Are you breathless or having hard time breathing?

  • Did you have any chest pain before losing consciousness?

Treatment for ventricular fibrillation

Ventricular fibrillation requires emergency medical treatment to prevent sudden cardiac death. The goal of emergency treatment is to restore blood flow as quickly as possible to prevent organ and brain damage. Treament options include cardiopulmonary resuscitation, defibrillation and medications to control heart rhythm.

View the symptoms of Ventricular fibrillation


  • Krummen DE, Ho G, Villongco CT, Hayase J, Schricker AA. Ventricular fibrillation: triggers, mechanisms and therapies. Future Cardiol. 2016 May;12(3):373-90. doi: 10.2217/fca-2016-0001. Epub 2016 Apr 27. PMID: 27120223.

  • Qu Z. What is ventricular fibrillation? Heart Rhythm. 2022 Feb;19(2):306-307. doi: 10.1016/j.hrthm.2021.10.021. Epub 2021 Oct 29. PMID: 34757188.

  • Marcus FI. Idiopathic ventricular fibrillation. J Cardiovasc Electrophysiol. 1997 Sep;8(9):1075-83. doi: 10.1111/j.1540-8167.1997.tb00632.x. PMID: 9300306.

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Yotsuya Yui Clinic, Japan

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