synchronized intermittent mandatory ventilation
A ventilation mode that delivers mandatory breaths synchronized with the patient's spontaneous breathing efforts while allowing unrestricted spontaneous breathing between mandatory breaths.
Full Definition
Synchronized intermittent mandatory ventilation (SIMV) is a hybrid ventilation mode commonly used in pediatric critical care that combines aspects of both controlled and spontaneous ventilation. The ventilator delivers a preset number of mandatory breaths per minute, synchronized with the patient's inspiratory efforts when possible, while permitting spontaneous breathing at the patient's own rate and tidal volume between mandatory breaths. This mode allows for gradual weaning from mechanical ventilation by progressively reducing the mandatory breath rate while maintaining ventilatory support. SIMV is particularly useful in pediatric patients as it promotes respiratory muscle conditioning while ensuring adequate ventilation.
Usage
Usage note: Commonly abbreviated as SIMV in clinical documentation.
In Context
- "The patient was transitioned to synchronized intermittent mandatory ventilation to begin the weaning process." — Respiratory therapy note
- "SIMV settings were adjusted to reduce the mandatory rate from 20 to 15 breaths per minute." — Ventilator management plan