呼吸机PRVC模式对机械通气效率的影响分析

A analysis on the effect of PRVC mode of ventilator for mechanical ventilation efficiency

目的:分析呼吸机压力调节容量控制(PRVC)模式较传统持续指令通气(CMV)模式在机械通气效率上的优势。方法:采用气体分析仪对相同条件下的PRVC模式、V-CMV模式及P-CMV模式的机械通气情况进行参数测试,分析PRVC模式与CMV模式在通气性能上的差异。结果:在相同测试条件下,PRVC模式对比V-CMV模式可供给大致相同的潮气量,并提供更低的压力和更高的顺应性。PRVC模式对比P-CMV在相同压力下可供给更多的潮气量和略高的顺应性。结论:PRVC模式综合了CMV模式的优点,在保证目标潮气量的同时降低了气道压力,提高了回路顺应性,使得机械通气的效率更加高效,安全性也得到了相应的提高。

Objective:To analyze the advantages of the pressure-regulated volume control(PRVC)mode compared with the traditional continuous mandatory ventilation(CMV)mode about mechanical ventilation efficiency of ventilator.Methods:For the mechanical ventilation situations,the parameters of PRVC mode,V-CMV mode and P-CMV mode under same detecting conditions were tested by using gas analyzer,which based on the ventilation principle of PRVC mode.And then the differences between PRVC mode and CMV modes were analyzed.Results:PRVC mode can supply the almost same tidal volume,and provide lower pressure and higher compliance compare with the V-CMV mode under the same conditions.On the other hand,PRVC mode can supply more tidal volume and slightly higher compliance compare with the P-CMV mode under the same pressure.Conclusion:PRVC mode has combined with the advantages of CMV mode,and it can make sure the target tidal volume,at the same time,reduce the pressure of airway,and improve the compliance for circuit.It also can make the mechanical ventilation to got more efficiency and more safety.