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5.2.5 - Principles of Defibrillation and Cardioversion
from Section 5.2 - Practical Cardiovascular System
- By Jonny Coppel
Edited by Ned Gilbert-Kawai, The Royal Liverpool Hospital, Debashish Dutta, Princess Alexandra Hospital NHS Trust, Harlow, Carl Waldmann, Royal Berkshire Hospital, Reading
Book:

Intensive Care Medicine

Published online:

27 July 2023

Print publication:

01 December 2021, pp 576-579
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Summary

Key Learning Points
1. Biphasic waveform defibrillators are used to depolarise cardiac muscle to restart the normal pacemaker functions of cardiac tissues.
2. Delays in defibrillation drastically reduce the chances of a successful outcome.
3. Communication and minimising peri-shock pauses are key to successful defibrillation.
4. Energy level settings should be determined by the manufacturer’s instructions on a local machine.
5. Synchronised cardioversion can be used for arrhythmias with adverse features, with different initial energy settings being used for different types of arrhythmias.