When was SIMV ventlator first introduced?

The Synchronized Intermittent Mandatory Ventilation (SIMV) mode was first introduced in the 1980s as a mode of mechanical ventilation. It was developed to allow for better synchronization between the patient's spontaneous breaths and the ventilator's mandatory breaths, improving patient comfort and reducing the risks associated with mechanical ventilation. SIMV quickly became popular in critical care settings for its ability to facilitate gradual weaning from mechanical support.