Types of Ventilators:

several types of mechanical ventilation:


(1)   Pressure –cycled ventilation: deliver a volume of gas to the airway using position pressure during inspiration. This positive pressure is delivered until reselected pressure has been reached. When the preset pressure is reached, the machine cycle into exhalation. Pressure cycled, the used in only a small portion of client who require CMV.


(2)   Volume – cycled ventilation (volume-controlled or volume –limited): Deliver a preset that has been reselected is delivered this volume.  A pressure limit can be set to prevent the occurrence of dangerously high airway pressure.


(3)   Time- cycled ventilation: terminate when preset inspirtatory time has elapsed. In most of these devices, a pressure limit is also incorporated.


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