動(dong)物(wu)呼(hu)吸(xi)機是(shi)在氣(qi)道(dao)開放(fang)狀態(tai)下(xia)，利(li)用(yong)高(gao)壓氣(qi)源(yuan)(高壓氧(yang)氣(qi)或(huo)壓縮空(kong)氣(qi))的高速(su)氣(qi)流(liu)，通(tong)過(guo)電(dian)子(zi)線路(lu)的自動(dong)控制(zhi)，將氣(qi)體(ti)有節(jie)律(lv)地噴(pen)入氣(qi)道(dao)，使(shi)肺擴(kuo)張(zhang)，以達到(dao)氣(qi)體(ti)交換(huan)的儀器(qi)。

　　不(bu)同(tong)的動(dong)物(wu)呼(hu)吸(xi)機，其(qi)實(shi)他們給(gei)動(dong)物(wu)的通(tong)氣(qi)方(fang)式(shi)也(ye)是不同(tong)的，根(gen)據通(tong)氣(qi)方(fang)式(shi)不(bu)同(tong)，我(wo)們可以(yi)將通(tong)氣(qi)方(fang)式(shi)分(fen)為：

　　控(kong)制(zhi)模(mo)式(CV)：動(dong)物(wu)呼(hu)吸(xi)機*替代實(shi)驗動(dong)物(wu)的呼吸(xi)，其(qi)呼(hu)吸(xi)頻(pin)率(lv)，潮(chao)氣(qi)量(liang)均由動(dong)物(wu)呼(hu)吸(xi)機控(kong)制，屬(shu)於*的呼吸(xi)支(zhi)持(chi)。適用於自(zi)主(zhu)呼(hu)吸(xi)消失或很(hen)微弱(ruo)的情(qing)況，比(bi)較典型(xing)的應用(yong)，就(jiu)是(shi)動(dong)物(wu)的開胸(xiong)手術(shu)實(shi)驗。根(gen)據控制(zhi)參數的不同(tong)，控(kong)制通(tong)氣(qi)又可以(yi)分(fen)為容量控制(zhi)通(tong)氣(qi)和(he)壓力(li)控(kong)制(zhi)通(tong)氣(qi)。容量控制(zhi)通(tong)氣(qi)是(shi)動(dong)物(wu)呼(hu)吸(xi)機按(an)預置的潮(chao)氣(qi)量(liang)、呼吸頻(pin)率(lv)、呼吸(xi)比(bi)等參數完(wan)成(cheng)通(tong)氣(qi)。壓(ya)力(li)控(kong)制(zhi)通(tong)氣(qi)則(ze)是(shi)動(dong)物(wu)呼(hu)吸(xi)機按(an)照(zhao)預(yu)置的頻(pin)率(lv)、呼吸(xi)比(bi)、吸氣(qi)壓(ya)力(li)工作(zuo)。

　　輔助(zhu)通(tong)氣(qi)(AV)：動(dong)物(wu)呼(hu)吸(xi)機的送(song)氣(qi)是(shi)通(tong)過(guo)動(dong)物(wu)呼(hu)吸(xi)機檢(jian)測(ce)實(shi)驗動(dong)物(wu)的氣(qi)道(dao)壓的降低來(lai)觸發(fa)。輔助(zhu)通(tong)氣(qi)是(shi)壹種(zhong)與(yu)臨(lin)床(chuang)應用(yong)類(lei)似(si)的呼吸(xi)方(fang)式(shi)，動(dong)物(wu)的輔助(zhu)通(tong)氣(qi)壹(yi)般(ban)可以(yi)通(tong)過(guo)設(she)置壓(ya)力(li)觸發(fa)、人(ren)工觸發(fa)或定(ding)時觸發(fa)等方(fang)式(shi)啟(qi)動(dong)。對(dui)於動(dong)物(wu)呼(hu)吸(xi)機而(er)言(yan)，輔助(zhu)通(tong)氣(qi)壹(yi)種(zhong)較高級的呼吸(xi)模(mo)式，僅(jin)少量(liang)動(dong)物(wu)呼(hu)吸(xi)機具體此功能。

　　嘆氣(qi)模(mo)式(sigh)：是(shi)壹種(zhong)在(zai)常(chang)規呼吸通(tong)氣(qi)條(tiao)件下，隔壹段時間進行壹(yi)次深呼(hu)吸的通(tong)氣(qi)方(fang)式(shi)。通(tong)常(chang)實(shi)驗動(dong)物(wu)在(zai)長期(qi)使(shi)用控(kong)制(zhi)通(tong)氣(qi)，尤(you)其是容量控制(zhi)通(tong)氣(qi)條(tiao)件下，某(mou)些邊(bian)緣(yuan)肺(fei)泡(pao)會(hui)膨脹不全(quan)，肺部(bu)功能會(hui)逐步減弱(ruo)，加入定(ding)時或手(shou)工嘆(tan)氣(qi)，可防(fang)止肺部(bu)萎(wei)陷(xian)不張(zhang)，改善氣(qi)體(ti)交換(huan)性(xing)能(neng)。