Notes
- AC (assist control): Pt triggers ventilator to deliver a breath. If apnea occurs, a minimum rate and volume are delivered to the Pt.
- CPAP: Continuous, nonstop positive pressure is applied throughout entire respiratory cycle.
- BiPAP: Same as CPAP but with two preset pressure settings: one for inspiration and one for expiration.
- CMV (continuous mandatory ventilation): Ventilator delivers a set tidal volume at a set rate regardless of Pt’s own attempts to breathe. Expect Pt to require sedation.
- IMV (intermittent mandatory ventilation): Ventilator delivers a set tidal volume at a set rate, yet also allows the Pt to initiate breaths.
- PSV (pressure support ventilation): For Pts with spontaneous breathing. Ventilator delivers a preset positive pressure for the duration of inspiration when the Pt initiates a breath.
- SIMV (synchronized intermittent mandatory ventilation): Ventilator is triggered only by a Pt-activated demand valve and therefore synchronizes with the Pt’s own respiratory efforts.
- PEEP (positive end-expiratory pressure): Maintains a preset positive airway pressure at the end of each expiration. PEEP is used if a PaO2 of 60 mm Hg cannot be achieved with an FIO2 of 60%.