论文部分内容阅读
一、概述高频通气(High—Frequency Ventilation,HFV)一般是指潮气量(V_T)较小而通气频率很高的人工通气。其 V_T 接近解剖无效腔(V_D),而通气频率可达60～2400次/分(1～40HZ)。有关 HFV 精确的定义和分类,目前还没有一致意见。据 Drazen 等建议,HFV 应定义为频率等于或大于四倍安静时呼吸频率的肺通气。最近,Smith 将HFV 做了进一步分类:通气频率60～110次/分的称高频正压通气(High—Frequency
I. Overview High-frequency ventilation (HFV) generally refers to the lower tidal volume (V_T) and high ventilation rate of artificial ventilation. Its V_T close to the anatomical void (V_D), while the ventilation frequency of up to 60 ~ 2400 times / min (1 ~ 40HZ). There is currently no consensus on the precise definition and classification of HFVs. According to Drazen et al., HFV should be defined as pulmonary ventilation at a frequency equal to or greater than four times the resting respiratory rate. Recently, Smith further classified HFV as follows: Ventilation frequency 60 ~ 110 times / min called high-frequency positive pressure ventilation (High-Frequency