(FIT)-Module 5 Workshop 8: Device Cases-Poole Case 7 Answer

Video Transcription

Video Summary

The video discusses why a 25-joule shock is insufficient to reliably defibrillate ventricular fibrillation (VF). It explains that detection and confirmation processes in an ICD (implantable cardioverter-defibrillator) determine when to administer a synchronized R-wave shock. The timing of the shock is crucial to prevent it from falling within the heart's vulnerable period, which could induce VF. In this case, the shock was delivered during this period, leading to VF due to its upper limit of ventricular vulnerability being above 25 joules. Hence, a 25-joule shock is unreliable, aligning with the discussed answer of C.

Keywords

25-joule shock

ventricular fibrillation

implantable cardioverter-defibrillator

synchronized R-wave shock

ventricular vulnerability