Implantable Cardioverter-Defibrillators

  • David Korpas


An implantable cardioverter defibrillator (ICD) is an active implantable medical device primarily used to deliver a high-energy electric shock to the heart via intracardial leads. The electric shock causes concurrent depolarization of all cell membranes in myocardial volume followed by an absolute refractory period. As a result, a tachycardia impulse spreading in the myocardium is interrupted. This implantable device also works as a pacemaker and applies antitachycardia pacing (ATP) to terminate ventricular tachycardia (VT) when high-energy shocks are not required.


Ventricular Tachycardia Implantable Cardioverter Defibrillator Supraventricular Tachycardia Detection Zone Coupling Interval 
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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • David Korpas
    • 1
    • 2
  1. 1.Boston Scientific Czech RepublicPragueCzech Republic
  2. 2.Faculty of Electrical Engineering and Computer Science Department of Cybernetics and Biomedical EngineeringVSB - Technical University of OstravaOstrava-PorubaCzech Republic

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