What are the advantages of synchronized intermittent mandatory ventilation (SIMV) to wean patients from mechanical ventilation?

Updated: Sep 15, 2020
  • Author: Christopher D Jackson, MD; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
  • Print


Evidence now suggests that the respiratory muscles are not able to rest during the mandatory breaths and that this mode may actually result in muscle fatigue and prolonged mechanical ventilation. Findings from randomized trials suggest that SIMV weaning delays extubation compared with PSV and SBT and that it should not be the primary mode of weaning in most patients. However, SIMV weaning does ensure that the patient receives some ventilatory support, and it may be favored in institutions where the staffing level of respiratory therapists is not optimal.

Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!