SIMV
Pronunciation: SIM-vee
Also written as: SIMV — Synchronized Intermittent Mandatory Ventilation
Ventilation mode that synchronizes mandatory breaths with patient's spontaneous respiratory efforts.
Full Definition
Synchronized Intermittent Mandatory Ventilation (SIMV) is a mechanical ventilation mode that delivers a preset number of mandatory breaths while allowing the patient to breathe spontaneously between these breaths. The ventilator synchronizes the mandatory breaths with the patient's own inspiratory efforts when possible, reducing the work of breathing and improving patient comfort. In neonatal care, SIMV is commonly used during weaning from mechanical ventilation as it allows gradual reduction of ventilatory support while maintaining backup ventilation. The mode can be combined with pressure support to assist spontaneous breaths.
Usage
Usage note: Always document rate and pressure support settings. Distinguish from unsynchronized IMV in clinical notes.
In Context
- "SIMV mode was initiated with a rate of 20 and pressure support of 8 cmH2O." — Ventilator setting documentation
- "The patient tolerated weaning to SIMV with improved synchrony." — Respiratory therapy assessment