Defibrillation
A witnessed monitored arrest can occur in an intensive care unit (ICU). Whenever ventricular fibrillation is detected in such a setting, it is always treated by electrical defibrillation.
Even when the arrest is not witnessed and monitored, when a defibrillator is available and ready, the first step should be two direct current (DC) shocks in quick succession.
Disclaimer: This guide is an educational reference for healthcare professionals. It does not replace clinical judgement — always follow your hospital's protocols and current guidelines.