synchronous intermittent mandatory ventilation
Also written as: SIMV — Synchronous Intermittent Mandatory Ventilation
A ventilation mode that delivers mandatory breaths synchronized with the infant's spontaneous breathing efforts while allowing spontaneous breaths between mandatory ones.
Full Definition
Synchronous intermittent mandatory ventilation (SIMV) is a mechanical ventilation strategy commonly used in neonatal intensive care that combines mandatory machine-delivered breaths with the infant's own spontaneous breathing. The ventilator synchronizes its mandatory breaths with the patient's respiratory efforts, reducing the work of breathing and improving patient comfort. This mode allows for gradual weaning from mechanical ventilation as the infant's respiratory function improves. SIMV is particularly beneficial for preterm infants who may have weak respiratory muscles but retain some spontaneous breathing capability.
Usage
Usage note: Always spell out on first use in documentation; may be abbreviated as SIMV thereafter.
In Context
- "The attending physician ordered SIMV with a rate of 20 breaths per minute for the 28-week preterm infant." — Medical chart documentation
- "Weaning from SIMV to CPAP was initiated once the infant demonstrated consistent spontaneous breathing efforts." — Nursing progress note