呼吸道管理及呼吸机应用课件.ppt

* * * * * * * The previous exhalation always sets the stage for the following inhalation. A high expiratory resistance will impose a load which will constitute an internal trigger threshold. A weak effort in this situation may not reach the trigger threshold set on the ventilator. The Time Constant Controller Valve? of the Servo-i will guarantee that there will be a very low resistance to the exhalation. This in turn will favour triggering, as hyperinflation is minimized, resulting in a situation where a consistent patient effort will be consistently rewarded. The superior speed in sensing and controlling will likewise give immediate unloading during laboured breathing. Depending on the situation, the work performed by the patient can be tailored by the degree of support and very important, by adapting the rise time to patient conditions. A very short rise time may deliver a semi controlled breath while with a tailored rise time the Servo-i will give superior response to patient demand. * The previous exhalation always sets the stage for the following inhalation. A high expiratory resistance will impose a load which will constitute an internal trigger threshold. A weak effort in this situation may not reach the trigger threshold set on the ventilator. The Time Constant Controller Valve? of the Servo-i will guarantee that there will be a very low resistance to the exhalation. This in turn will favour triggering, as hyperinflation is minimized, resulting in a situation where a consistent patient effort will be consistently rewarded. The superior speed in sensing and controlling will likewise give immediate unloading during laboured breathing. Depending on the situation, the work performed by the patient can be tailored by the degree of support and very important, by adapting the rise time to patient conditions. A very short rise time may deliver a semi controlled breath while with a tailored rise time the Servo-i will give superior response to patient demand. * Th