Not an advantage of synchronized intermittent mandatory ventilation (SIMV) over controlled mode ventilation (CMV):
disadvantage of control mode ventilation 1. paralysis or deep sedation is required 2. hemodynamic imbalance in background of decreased blood volume 3. respiratory muscle atrophy 4. weaning not possible. synchronized intermittent mandatory ventilation has minimized / removed these side effects
Increased requirement of sedation and muscle relaxant
Less hypotension
Less V /Q mismatch
Rapid weaning
Modes of Ventilation