Defribrillators

Introduction:

The original implantable cardioverter–defibrillator was designed to detect only ventricular fibrillation, by means of a wave-form analysis termed a probability-density function. Use of this device indicated that therapy for organized ventricular tachycardia was also important. Subsequently, the rate of R waves detected by the defibrillator’s ventricular-sensing circuit became the standard measurement used to identify cardiac rhythm.

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