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  • Ventilators designed to provide support to patients who do not require complex critical care ventilators. Most devices use positive pressure to deliver gas to the lungs at normal breathing rates and tidal volumes through an endotracheal tube, a tracheostomy cannula, or a mask, typically when ventilation is needed only at night. These ventilators include a control system and alarms; some ventilators also include oxygen accumulators and heating and humidifying capabilities. Portable/home care ventilators may use several methods of cycling (e.g., volume, time) and several ventilation modes, including control, assist/control, and synchronized intermittent mandatory ventilation (SIMV) modes. Power is typically supplied from a power line or from an internal or external battery (e.g., a car battery). These ventilators are small, lightweight, and easy to operate, should resist tipping over, and be easily mounted in different orientations; ventilator alarms should allow quick assessment and correction of the alarm condition. Portable/home care ventilators are used for long-term ventilatory support in extended care facilities and in the home; they may also be used in emergency care.
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