SIMV (Synchronized intermittent mandatory ventilation)

• A common mode of ventilation that all pratitioners should be familiar with
• It provides a minimum number of fully assisted breaths synchronized with patient respiratory effort
• Patient or time triggered
• Flow limited
• Volume cycled
• Any additional breaths are unassisted and determined by patient effort
• SIMV=AC when heavily sedated
• The idea is exercise the patients lungs but this can lead to increased work of breathing and fatigue, and prolong extubation when used