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Controlled Mechanical Ventilation: (CMV)

- Discussion: 
- Delivers preset tidal volume at preset rate. 
- No allowance is made for gas flow upon spontaneous effort by patient; 
- Usually reserved for intraoperative use with anesthesia 
- Requires heavy sedation or paralysis; 
- Assist controlled mechanical ventilation: (ACMV) 
- Ventilator delivers a preset tidal volume each time the patient makes an inspiratory effort; 
- Entire minute ventilation is ventilator generated