What is ventricular fibrillation

Ventricular flutter and fibrillation


Ventricular flutter refers to tachycardiac, ventricular cardiac arrhythmias with a frequency of 250-320 / min. A transition to ventricular fibrillation is common, with frequencies of> 320 / min with undulating rashes that can no longer be recognized as a QRS complex. This development is mostly caused by severe organic heart diseases, extracardiac diseases or electrolyte disorders. Ventricular fibrillation is a life-threatening emergency situation and requires immediate resuscitation (initially: defibrillation) because there is a risk of mechanical cardiac arrest.


Underlying cardiac diseases

Other causes


  • Decreased flicker threshold
  • Chaotic excitation and ineffective contraction of the ventricular myocardium
  • Insufficient cardiac output


  • Ventricular flutter
    • Ventricular frequencies 250–320 / min, mostly smooth transition to ventricular fibrillation
  • Ventricular fibrillation
    • Arrhythmic, high-frequency flicker waves> 320 / min
    • Irregular undulations, individual QRS complexes can no longer be defined


Fitness to drive after ventricular flutter and fibrillation

The assessment for a recommendation on fitness to drive after ventricular flutter and fibrillation is based on the underlying disease. If there is an ICD indication, the recommendations given there on fitness to drive should be observed.

Coding according to ICD-10-GM version 2021

Source: Based on the ICD-10-GM version 2021, DIMDI.


  1. Herold et al .: Internal Medicine. Self-published 2012, ISBN: 978-3-981-46602-7.