Cycling of the Mechanical Ventilator Breath
Cycling of the Mechanical Ventilator Breath
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DOI：
10.4187/respcare.01088
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发表时间：
2011-01-01
期刊：
影响因子：
2.5
通讯作者：
Gentile, Michael A.
中科院分区：
文献类型：
--
作者：
Gentile, Michael A.
患者-呼吸机相互作用是优化机械通气的关键因素。从吸气到呼气的变化是机械通气呼吸中的关键点，称为“循环”。“如果呼吸机循环到呼气的流量与神经吸气的终止不一致，则可能发生患者-呼吸机阻塞。理想地，呼吸机与患者的神经定时同步地终止吸气流，但是呼吸机经常过早或过晚地终止吸气。大多数当前的机械呼吸机包括可调节的循环功能，当与波形图形结合使用时，可以增强患者-呼吸机同步。
Patient-ventilator interaction is a key element in optimizing mechanical ventilation. The change from inspiration to expiration is a crucial point in the mechanically ventilated breath, and is termed "cycling." Patient-ventilator asynchrony may occur if the flow at which the ventilator cycles to exhalation does not coincide with the termination of neural inspiration. Ideally, the ventilator terminates inspiratory flow in synchrony with the patient's neural timing, but frequently the ventilator terminates inspiration either early or late. Most current mechanical ventilators include adjustable cycling features that, when used in conjunction with waveform graphics, can enhance patient-ventilator synchrony.