【正文】
nsive medicine,第二十七頁,共三十八頁。,Flow trigger,由于流速觸發(fā)中背景氣流的存在,患者吸氣時即刻新鮮的氣體 流速觸發(fā)比壓力觸發(fā)更敏感(mǐngǎn),呼吸機的反應(yīng)時間(響應(yīng)時間)較短,The First Affiliated Hospital of Bengbu Medical College in intensive medicine,第二十六頁,共三十八頁。,Flow trigger,患者(hu224。,Pressure trigger,患者引起管道內(nèi)壓力(yāl236。 s249。ng)時間間隔送氣,The First Affiliated Hospital of Bengbu Medical College in intensive medicine,第二十二頁,共三十八頁。fā)階段,The First Affiliated Hospital of Bengbu Medical College in intensive medicine,Time trigger,Pressure trigger,Flow trigger,第二十一頁,共三十八頁。)階段,吸氣轉(zhuǎn)換呼氣,呼氣階段,pressure,time,第二十頁,共三十八頁。)通氣時相,The First Affiliated Hospital of Bengbu Medical College in intensive medicine,A,B,C,D,觸發(fā)(ch249。),V/PCV(volume/pressure controlled ventilation) V/PA/C(volume/pressureassisted/controlled) V/PSIMV(volume/pressuresynchronized intermittent mandatory ventilation) PSV(pressure support ventilation) CPAP(continuous positive airway pressure) BIPAP(bilevel positive airway pressure),The First Affiliated Hospital of Bengbu Medical College in intensive medicine,第十九頁,共三十八頁。,呼吸機模式(m243。),壓力(yāl236。,目標(biāo)(m249。,機械通氣(tōng q236。ngt225。,機械(jīxi232。nɡ)的通氣概念,吸氣時間:呼吸機供氣時間 吸呼比:在每次呼吸中,吸氣所用時間和呼氣所用時間之間的比值 呼吸頻率:患者每分鐘的呼吸的次數(shù) 窒息通氣:僅在自主呼吸模式中,如果在預(yù)先設(shè)定的時間后病人沒有自主呼吸或觸發(fā)呼吸機,呼吸機將啟動后備通氣程序 吸氣觸發(fā):流速、壓力(yāl236。,常用(ch225。)概念,潮氣量(Vt):患者在平靜狀態(tài)下,每次所能吸入或呼出的氣體容量