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危重新生兒轉運設備簡介
隨著(zhu)各(ge)醫療機構新生兒轉(zhuan)過(guo)系統的建立,必須有相應(ying)的儀器、設備(bei)及(ji)藥物配(pei)(pei)置,配(pei)(pei)置儀器花費較大(da),以下介紹的某(mou)(mou)些(xie)儀器是必備(bei)的,如轉(zhuan)運暖箱、氧(yang)飽和度計(ji)等,某(mou)(mou)些(xie)儀器可根據經(jing)費情(qing)況逐漸配(pei)(pei)置,經(jing)驗表明,只要建立起適(shi)當(dang)的轉(zhuan)運網絡,注意在穩定(ding)各(ge)生命體征后才著(zhu)手轉(zhuan)運,避免轉(zhuan)運途中病(bing)情(qing)突(tu)然變化而(er)措手不及(ji),則不一定(ding)要把(ba)所有儀器配(pei)(pei)齊才開始轉(zhuan)運工作。
1、轉運用暖箱(transport incubator)[1]
主要(yao)(yao)用(yong)于(yu)轉(zhuan)(zhuan)運(yun)期間維持(chi)高危兒體(ti)溫(wen)(wen)(wen)的(de)(de)恒定,保證(zheng)氧供(gong)及防(fang)止(zhi)(zhi)箱(xiang)(xiang)(xiang)內(nei)細菌感染,一臺良好的(de)(de)轉(zhuan)(zhuan)運(yun)用(yong)暖(nuan)箱(xiang)(xiang)(xiang),除具(ju)有(you)(you)與(yu)新生兒室中(zhong)暖(nuan)箱(xiang)(xiang)(xiang)一般(ban)的(de)(de)特點外(wai)(wai),尚(shang)要(yao)(yao)求(qiu)體(ti)積小,能(neng)(neng)固定于(yu)救(jiu)護車(che)(che)上(shang)外(wai)(wai),尤(you)有(you)(you)以(yi)下性(xing)能(neng)(neng):①最好有(you)(you)雙層透明恒溫(wen)(wen)(wen)罩,可(ke)避免(mian)患(huan)兒輻射(she)散熱及避免(mian)外(wai)(wai)界溫(wen)(wen)(wen)度對箱(xiang)(xiang)(xiang)內(nei)溫(wen)(wen)(wen)度的(de)(de)影響(xiang);②要(yao)(yao)有(you)(you)內(nei)置(zhi)式(shi)電(dian)池,充(chong)電(dian)后(hou)(hou)能(neng)(neng)使(shi)(shi)用(yong)2h以(yi)上(shang),亦(yi)可(ke)接汽車(che)(che)12伏(fu)電(dian)池或(huo)外(wai)(wai)置(zhi)式(shi)12-24伏(fu)蓄電(dian)池,后(hou)(hou)者可(ke)連續使(shi)(shi)用(yong)2-4h;③有(you)(you)足夠的(de)(de)箱(xiang)(xiang)(xiang)內(nei)光源(yuan)照明,以(yi)利于(yu)轉(zhuan)(zhuan)運(yun)期間觀察(cha)或(huo)處理患(huan)兒;④可(ke)維持(chi)一定的(de)(de)箱(xiang)(xiang)(xiang)溫(wen)(wen)(wen)溫(wen)(wen)(wen)度,轉(zhuan)(zhuan)運(yun)用(yong)國產暖(nuan)箱(xiang)(xiang)(xiang)設定溫(wen)(wen)(wen)度范圍(wei)為25-37℃,進(jin)口(kou)暖(nuan)箱(xiang)(xiang)(xiang)為33-39℃,后(hou)(hou)者超過38℃會報警(jing)并(bing)自動切斷電(dian)源(yuan),防(fang)止(zhi)(zhi)患(huan)兒過高熱;⑤有(you)(you)內(nei)置(zhi)式(shi)吸引器,可(ke)作負壓吸引;⑥可(ke)進(jin)行箱(xiang)(xiang)(xiang)內(nei)供(gong)氧,有(you)(you)供(gong)氧濃(nong)度指示(21-60%),當供(gong)氧時,外(wai)(wai)界氣(qi)(qi)體(ti)可(ke)經細菌過濾器與(yu)氧氣(qi)(qi)混(hun)合成混(hun)合氣(qi)(qi),再經濕(shi)化槽使(shi)(shi)混(hun)合氣(qi)(qi)濕(shi)度達60%左右(you),然后(hou)(hou)經噴頭(tou)噴出(chu)(chu),從而(er)維持(chi)箱(xiang)(xiang)(xiang)內(nei)一定濕(shi)度,二氧化碳則經過箱(xiang)(xiang)(xiang)內(nei)下部氣(qi)(qi)孔流出(chu)(chu);⑦箱(xiang)(xiang)(xiang)內(nei)有(you)(you)安全(quan)帶以(yi)固定患(huan)兒,避免(mian)轉(zhuan)(zhuan)運(yun)期間強烈震動而(er)導致嘔吐與(yu)血壓波動;⑧有(you)(you)固定環(huan)以(yi)鎖緊透明罩,防(fang)止(zhi)(zhi)汽車(che)(che)震動時導致罩的(de)(de)震動;⑨重量輕(qing),一般(ban)在25kg左右(you)(包(bao)括兩個附屬的(de)(de)小氧氣(qi)(qi)筒);⑩箱(xiang)(xiang)(xiang)體(ti)可(ke)置(zhi)于(yu)升降臺車(che)(che)上(shang),便于(yu)在救(jiu)護車(che)(che)內(nei)進(jin)出(chu)(chu)或(huo)在地上(shang)行走(zou)。
2、轉運用呼吸機(transport ventllator)[2]
用(yong)于(yu)(yu)轉運(yun)(yun)期間呼(hu)(hu)吸(xi)(xi)(xi)支持的(de)轉運(yun)(yun)用(yong)新生兒(er)呼(hu)(hu)吸(xi)(xi)(xi)機,主(zhu)要采用(yong)恒速氣(qi)(qi)(qi)流(liu)(liu)、時間(或(huo)(huo)容量(liang)(liang)-時間)切換及壓(ya)(ya)力限制(zhi)型(xing)便攜式(shi)呼(hu)(hu)吸(xi)(xi)(xi)機。呼(hu)(hu)吸(xi)(xi)(xi)機類型(xing)不(bu)同,性(xing)能(neng)(neng)略有(you)(you)(you)(you)(you)差異,其(qi)共同點為:①適用(yong)于(yu)(yu)6kg以下(xia)的(de)新生兒(er)和嬰幼兒(er);②)呼(hu)(hu)吸(xi)(xi)(xi)模式(shi)包括間歇(xie)正(zheng)壓(ya)(ya)通(tong)氣(qi)(qi)(qi)(IP-PV)、間歇(xie)指(zhi)令通(tong)氣(qi)(qi)(qi)(IMV)及持續(xu)氣(qi)(qi)(qi)道(dao)正(zheng)壓(ya)(ya)(CPAP);③吸(xi)(xi)(xi)/呼(hu)(hu)氣(qi)(qi)(qi)時間,呼(hu)(hu)吸(xi)(xi)(xi)頻率、吸(xi)(xi)(xi)氣(qi)(qi)(qi)流(liu)(liu)量(liang)(liang)、吸(xi)(xi)(xi)氣(qi)(qi)(qi)峰壓(ya)(ya)、呼(hu)(hu)氣(qi)(qi)(qi)末(mo)正(zheng)壓(ya)(ya)、吸(xi)(xi)(xi)氧濃度可(ke)調;④有(you)(you)(you)(you)(you)電(dian)(dian)(dian)源不(bu)足、氣(qi)(qi)(qi)流(liu)(liu)不(bu)足、高壓(ya)(ya)及低(di)壓(ya)(ya)報(bao)警;⑤能(neng)(neng)接車上(shang)12伏電(dian)(dian)(dian)源;⑥有(you)(you)(you)(you)(you)內(nei)(nei)部電(dian)(dian)(dian)池便于(yu)(yu)充(chong)(chong)電(dian)(dian)(dian)后(hou)(hou)使用(yong);⑦有(you)(you)(you)(you)(you)一(yi)定(ding)的(de)固定(ding)壓(ya)(ya)力安全(quan)裝置(zhi),可(ke)限制(zhi)氣(qi)(qi)(qi)道(dao)壓(ya)(ya)不(bu)高于(yu)(yu)6.86kPa或(huo)(huo)不(bu)低(di)于(yu)(yu)0.25kPa。其(qi)差異在(zai)于(yu)(yu)體(ti)(ti)積(ji)、重(zhong)量(liang)(liang)不(bu)一(yi),此與內(nei)(nei)部電(dian)(dian)(dian)池的(de)大小(xiao)及有(you)(you)(you)(you)(you)否其(qi)他輔助功能(neng)(neng)有(you)(you)(you)(you)(you)關。體(ti)(ti)積(ji)大、重(zhong)量(liang)(liang)重(zhong)(10.5-12kg)的(de)呼(hu)(hu)吸(xi)(xi)(xi)機,若內(nei)(nei)部電(dian)(dian)(dian)池大,充(chong)(chong)電(dian)(dian)(dian)后(hou)(hou)可(ke)連續(xu)使用(yong)10h;若電(dian)(dian)(dian)池小(xiao),充(chong)(chong)電(dian)(dian)(dian)后(hou)(hou)僅能(neng)(neng)用(yong)40min,但(dan)機內(nei)(nei)帶(dai)(dai)有(you)(you)(you)(you)(you)空氣(qi)(qi)(qi)壓(ya)(ya)縮(suo)機而不(bu)必外(wai)接壓(ya)(ya)縮(suo)空氣(qi)(qi)(qi)瓶,并帶(dai)(dai)有(you)(you)(you)(you)(you)氧濃度測(ce)定(ding)儀及加(jia)熱(re)濕(shi)化(hua)裝置(zhi);或(huo)(huo)者(zhe)有(you)(you)(you)(you)(you)某(mou)種呼(hu)(hu)吸(xi)(xi)(xi)模式(shi)如(ru)輔助/控(kong)制(zhi)通(tong)氣(qi)(qi)(qi)、同步指(zhi)令通(tong)氣(qi)(qi)(qi)、按需氣(qi)(qi)(qi)流(liu)(liu)及有(you)(you)(you)(you)(you)管道(dao)阻塞報(bao)警等。而體(ti)(ti)積(ji)小(xiao)、重(zhong)量(liang)(liang)輕者(zhe)(2-4kg)則(ze)無上(shang)述(shu)附加(jia)裝置(zhi)或(huo)(huo)呼(hu)(hu)吸(xi)(xi)(xi)模式(shi),或(huo)(huo)附帶(dai)(dai)一(yi)個外(wai)置(zhi)式(shi)空-氧混合器(qi),內(nei)(nei)部電(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian)后(hou)(hou)可(ke)用(yong)6-8h 。對轉運(yun)(yun)用(yong)呼(hu)(hu)吸(xi)(xi)(xi)機總(zong)的(de)要求是體(ti)(ti)積(ji)小(xiao)、重(zhong)量(liang)(liang)輕,操作方便且參數易于(yu)(yu)觀察,耗氧量(liang)(liang)少(shao),能(neng)(neng)固定(ding)于(yu)(yu)暖(nuan)箱(xiang)或(huo)(huo)車床上(shang),有(you)(you)(you)(you)(you)抗(kang)震及抗(kang)傾斜性(xing)能(neng)(neng)。
3、手握式脈搏血氧測定儀(protable pulse oxymeter)[3]
脈(mo)搏血氧(yang)(yang)測(ce)(ce)定儀,用于連(lian)續監測(ce)(ce)患兒(er)血氧(yang)(yang)飽和(he)度及脈(mo)率(lv)(lv),該儀器(qi)分兩部分,中心部分為(wei)一(yi)微型電腦,周圍部分為(wei)傳感(gan)器(qi),后者由(you)光(guang)(guang)(guang)源(yuan)二(er)極(ji)管(guan)及攝(she)像(xiang)二(er)極(ji)管(guan)組成。光(guang)(guang)(guang)源(yuan)二(er)極(ji)管(guan)發(fa)出(chu)波(bo)長(chang)為(wei)660nm(紅光(guang)(guang)(guang))和(he)940nm(紅外光(guang)(guang)(guang))光(guang)(guang)(guang)譜,光(guang)(guang)(guang)波(bo)通過血管(guan)床后到(dao)達攝(she)像(xiang)二(er)極(ji)管(guan),根(gen)據(ju)光(guang)(guang)(guang)源(yuan)通過組織時氧(yang)(yang)合血紅蛋(dan)白對(dui)紅外光(guang)(guang)(guang)與還原血紅蛋(dan)白對(dui)紅光(guang)(guang)(guang)光(guang)(guang)(guang)譜吸(xi)收量的不同,由(you)微電腦計算(suan)出(chu)血氧(yang)(yang)飽和(he)度,由(you)于吸(xi)收率(lv)(lv)根(gen)據(ju)脈(mo)搏率(lv)(lv)的變(bian)(bian)化而變(bian)(bian)化,故亦可測(ce)(ce)出(chu)脈(mo)搏率(lv)(lv)。
手握式轉運用(yong)(yong)脈搏(bo)血(xue)氧測(ce)(ce)定儀,體積小,重(zhong)量(liang)輕(0.2-0.5g)便于(yu)攜帶,有視(shi)覺報(bao)警(jing)信號(hao)以(yi)監測(ce)(ce)患兒(er)情(qing)況,使(shi)(shi)用(yong)(yong)6-9個(ge)堿性電池供(gong)電,可連續使(shi)(shi)用(yong)(yong)12-100h。中心部分可設置(zhi)(zhi)日歷、時間、并有飽和度上下(xia)限、脈搏(bo)率上下(xia)限及(ji)電量(liang)不足、連接(jie)不當等報(bao)警(jing)。所用(yong)(yong)傳(chuan)感(gan)器(qi)(qi)為(wei)重(zhong)復(fu)式或一次(ci)性使(shi)(shi)用(yong)(yong)。一般多采用(yong)(yong)重(zhong)復(fu)式傳(chuan)感(gan)器(qi)(qi):包括夾于(yu)大拇指(zhi)頭、用(yong)(yong)于(yu)2-20kg的嬰兒(er)活動式傳(chuan)感(gan)器(qi)(qi)。為(wei)準確測(ce)(ce)量(liang),使(shi)(shi)≤2kg的新生兒(er)活動式傳(chuan)感(gan)器(qi)(qi)。為(wei)準確測(ce)(ce)量(liang),使(shi)(shi)用(yong)(yong)時傳(chuan)感(gan)器(qi)(qi)位置(zhi)(zhi)應與心臟(zang)位置(zhi)(zhi)同一水平,膠(jiao)帶勿綁(bang)過緊,以(yi)免妨礙血(xue)液流動。
血(xue)氧飽(bao)和度(SaO2)在一定(ding)范圍(wei)內(nei)與血(xue)氧分壓(PaO2)相(xiang)關,但不成(cheng)線性關系。低(di)氧狀(zhuang)態下(xia)變(bian)化比PaO2更為敏(min)感,高氧狀(zhuang)態下(xia)PaO2很高,但SaO2變(bian)化極少,故本(ben)儀器(qi)可用(yong)于監測(ce)低(di)氧血(xue)癥,而不能監測(ce)高氧血(xue)癥。使用(yong)本(ben)儀器(qi)時應注(zhu)意兩點(dian):①應選擇適用(yong)于新(xin)生(sheng)兒(er)的儀器(qi),此種儀器(qi)當氧飽(bao)和度為75-95%時,其精確度為±3%;②患兒(er)血(xue)壓、心率(lv)、血(xue)二氧化碳分壓、血(xue)pH、體(ti)溫、紅細胞壓積、血(xue)清(qing)膽紅素等,均(jun)對(dui)SaO2有(you)所影響(xiang)。
4、注射輸液泵(syring pump)[4]
普通注(zhu)射輸(shu)(shu)液泵(beng)用(yong)(yong)于抗生(sheng)素、藥物(wu)以及靜脈高營(ying)養液的(de)輸(shu)(shu)注(zhu),此外尚有特殊用(yong)(yong)途之注(zhu)射輸(shu)(shu)液泵(beng)如(ru)用(yong)(yong)于生(sheng)理研究,肝素抗凝(ning)治療、糖(tang)尿病人(ren)胰島(dao)素注(zhu)射等,注(zhu)意(yi)勿(wu)錯誤選用(yong)(yong)。
注(zhu)射輸液(ye)泵包(bao)括:①注(zhu)射裝(zhuang)置(zhi):用(yong)以(yi)放置(zhi)及固定10-15ml注(zhu)射器(qi);②機(ji)械活(huo)動(dong)(dong)裝(zhuang)置(zhi):通(tong)常為帶一推動(dong)(dong)滑(hua)輪(lun)的螺桿引導或(huo)由電(dian)(dian)(dian)動(dong)(dong)機(ji)通(tong)過膠帶直接(jie)帶動(dong)(dong)注(zhu)射器(qi)推進;③電(dian)(dian)(dian)動(dong)(dong)裝(zhuang)置(zhi):為電(dian)(dian)(dian)動(dong)(dong)機(ji),可與引導螺桿或(huo)轉輪(lun)相接(jie);④電(dian)(dian)(dian)子控(kong)制裝(zhuang)置(zhi),用(yong)以(yi)設置(zhi)輸液(ye)參(can)數及報警。
不(bu)同產(chan)品,其外型(xing)、體(ti)積、微量控制程度(du)均(jun)有(you)不(bu)同。適用(yong)(yong)(yong)于新生兒的注(zhu)(zhu)(zhu)(zhu)射(she)(she)輸液(ye)泵要求有(you)以下條件(jian):①注(zhu)(zhu)(zhu)(zhu)射(she)(she)速(su)(su)度(du):0.1-99.9ml/h可調;②輸液(ye)精(jing)確度(du)為±1%;③適用(yong)(yong)(yong)的注(zhu)(zhu)(zhu)(zhu)射(she)(she)器(qi)(qi)范圍廣:大多廠(chang)家生產(chan)的10-15ml注(zhu)(zhu)(zhu)(zhu)射(she)(she)器(qi)(qi)均(jun)能應用(yong)(yong)(yong);④有(you)快進鍵可清洗管道;⑤有(you)報(bao)警裝(zhuang)置(zhi):包括注(zhu)(zhu)(zhu)(zhu)射(she)(she)器(qi)(qi)選用(yong)(yong)(yong)不(bu)當、放置(zhi)錯(cuo)誤、輸注(zhu)(zhu)(zhu)(zhu)時(shi)間(jian)剩余(yu)3min 、注(zhu)(zhu)(zhu)(zhu)射(she)(she)完(wan)畢、空(kong)注(zhu)(zhu)(zhu)(zhu)射(she)(she)器(qi)(qi)、壓力過高(阻塞)、傳動裝(zhuang)置(zhi)脫落、內(nei)部電池不(bu)足、內(nei)部故(gu)障等;⑥內(nei)置(zhi)電池充電后可連續使用(yong)(yong)(yong)8-15h 。良好注(zhu)(zhu)(zhu)(zhu)射(she)(she)輸液(ye)泵尚(shang)具(ju)有(you):①自(zi)我提示設置(zhi),接(jie)通(tong)電源(yuan)后,儀器(qi)(qi)電子訊號(hao)會提示每(mei)一操作步驟,以便予不(bu)熟識該儀器(qi)(qi)的人員使用(yong)(yong)(yong);②自(zi)動推算注(zhu)(zhu)(zhu)(zhu)射(she)(she)速(su)(su)度(du)或(huo)注(zhu)(zhu)(zhu)(zhu)射(she)(she)時(shi)間(jian):只(zhi)需(xu)將注(zhu)(zhu)(zhu)(zhu)射(she)(she)量及所需(xu)時(shi)間(jian)(或(huo)速(su)(su)度(du))輸入,該泵即自(zi)動確定注(zhu)(zhu)(zhu)(zhu)射(she)(she)速(su)(su)度(du)(或(huo)時(shi)間(jian)),從而更方便使用(yong)(yong)(yong)。
與容量(liang)輸液泵相比(bi) ,注(zhu)射輸液泵體(ti)積小(xiao),重量(liang)輕,攜帶(dai)與使(shi)用方便,注(zhu)射速(su)度(du)(du)均勻(yun),注(zhu)射精確(que)度(du)(du)高(gao),故更適(shi)于新生(sheng)兒(er)轉(zhuan)運時應用。但存在下列問題:①無管(guan)導(dao)空氣報(bao)警裝置(zhi);②反復更換注(zhu)射器(qi)而用同(tong)一(yi)導(dao)管(guan),感染危險度(du)(du)較高(gao);③泵放置(zhi)過(guo)于傾斜或因阻(zu)塞(sai)壓(ya)力過(guo)高(gao),可導(dao)致(zhi)液體(ti)從注(zhu)射器(qi)后部外溢,故使(shi)用時需注(zhu)意。
5、微量血糖計(portable blood glucose monitor)[5]
主(zhu)要用(yong)(yong)于轉運(yun)期(qi)間(jian)血(xue)糖的(de)監測(ce)(ce)(ce),目前(qian)有(you)多種品牌,特點為重(zhong)量(liang)輕(80-100g),檢(jian)(jian)測(ce)(ce)(ce)速度(du)快(kuai)(20-45秒),使用(yong)(yong)方便(bian)(6-9伏堿性電(dian)池(chi),可檢(jian)(jian)測(ce)(ce)(ce)800-1000次),按(an)其檢(jian)(jian)測(ce)(ce)(ce)原理分為光(guang)感應型(xing)(包括(kuo)光(guang)反射強(qiang)度(du)檢(jian)(jian)測(ce)(ce)(ce)及光(guang)吸(xi)收(shou)強(qiang)度(du)檢(jian)(jian)測(ce)(ce)(ce))及生物感應型(xing)(電(dian)化學檢(jian)(jian)測(ce)(ce)(ce))兩類,但(dan)檢(jian)(jian)測(ce)(ce)(ce)方法均為毛細血(xue)管全(quan)血(xue)滴于試紙(zhi)上,再放入主(zhu)機中(zhong)檢(jian)(jian)測(ce)(ce)(ce)。
并非所(suo)有(you)微(wei)量(liang)(liang)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)計(ji)(ji)(ji)都能(neng)應用(yong)于(yu)新生(sheng)(sheng)兒(er),適用(yong)于(yu)新生(sheng)(sheng)兒(er)的(de)良(liang)好的(de)微(wei)量(liang)(liang)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)計(ji)(ji)(ji)要求:①檢(jian)(jian)測(ce)(ce)范圍(wei):新生(sheng)(sheng)兒(er)正常(chang)(chang)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)低(di)于(yu)成人,<2.2mmol/L屬新生(sheng)(sheng)兒(er)低(di)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang),故適于(yu)新生(sheng)(sheng)兒(er)用(yong)的(de)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)計(ji)(ji)(ji),其檢(jian)(jian)測(ce)(ce)下限應為1.1甚(shen)或0.55mmol/L(10mg/dL),血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)計(ji)(ji)(ji)上限多(duo)在22.2-33.3mmol/L(400-600mg/dL)之間;②檢(jian)(jian)測(ce)(ce)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)量(liang)(liang):新生(sheng)(sheng)兒(er)不易獲得較大滴(di)的(de)毛(mao)細(xi)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)管血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue),故血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)計(ji)(ji)(ji)所(suo)需血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)量(liang)(liang)應盡量(liang)(liang)減(jian)(jian)少(shao)。采血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)量(liang)(liang)應在3.5-5ul范圍(wei),應注意血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)量(liang)(liang)不足可導致血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)值明(ming)顯低(di)下;③精確度:與(yu)醫院生(sheng)(sheng)化室檢(jian)(jian)測(ce)(ce)的(de)靜(jing)(jing)脈(mo)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)漿葡萄(tao)(tao)糖(tang)(tang)(tang)(tang)(tang)(VPG)相比,微(wei)量(liang)(liang)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)計(ji)(ji)(ji)所(suo)檢(jian)(jian)測(ce)(ce)的(de)是毛(mao)細(xi)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)管全血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(動靜(jing)(jing)脈(mo)混合血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue))葡萄(tao)(tao)糖(tang)(tang)(tang)(tang)(tang)(CBG),當VPG<4.44mmol/L(80mg/dl)時(shi),細(xi)胞內外(wai)葡萄(tao)(tao)糖(tang)(tang)(tang)(tang)(tang)濃度無(wu)大差異(yi),血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)漿與(yu)全血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)葡萄(tao)(tao)糖(tang)(tang)(tang)(tang)(tang)量(liang)(liang)相等(deng),但(dan)因動脈(mo)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)略高(gao)于(yu)靜(jing)(jing)脈(mo)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang),故CBG略高(gao)于(yu)VPG,但(dan)誤差僅(jin)0-2.9%,適用(yong)于(yu)新生(sheng)(sheng)兒(er)的(de)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)計(ji)(ji)(ji),應達(da)(da)到此(ci)精確度。當VPG>4.44mmol/L時(shi),因細(xi)胞外(wai)液糖(tang)(tang)(tang)(tang)(tang)進入細(xi)胞內存(cun)在某種程度的(de)障礙(ai),細(xi)胞外(wai)液糖(tang)(tang)(tang)(tang)(tang)開始逐漸高(gao)于(yu)細(xi)胞內糖(tang)(tang)(tang)(tang)(tang)(即血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)漿糖(tang)(tang)(tang)(tang)(tang)開始高(gao)于(yu)全血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)),此(ci)時(shi)CBG低(di)于(yu)VPG,誤差達(da)(da)到 7.7-8.4%;④要有(you)可重復性或穩定(ding)性:相同(tong)批號試紙條反(fan)復檢(jian)(jian)測(ce)(ce),彼此(ci)間誤差應<5%;⑤抗(kang)干(gan)擾(rao)性:在新生(sheng)(sheng)兒(er)常(chang)(chang)見的(de)內源性物質,臺膽紅素、乳酸、肌酐等(deng),外(wai)源性物質如多(duo)巴(ba)胺、維生(sheng)(sheng)素C、枸椽酸鈉等(deng),均可導致血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)值偏(pian)高(gao)。某些生(sheng)(sheng)物感應型(xing)微(wei)量(liang)(liang)血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)計(ji)(ji)(ji),可測(ce)(ce)出(chu)潛在干(gan)擾(rao)物質并將其影響減(jian)(jian)除,以保證血(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)(xue)糖(tang)(tang)(tang)(tang)(tang)值不受干(gan)擾(rao)。
盡管(guan)使用(yong)適用(yong)于(yu)新生兒的血(xue)糖(tang)計,應注意(yi)不(bu)同產品(pin),當紅(hong)細胞壓積<20-40%時(shi)(shi),血(xue)糖(tang)值會(hui)偏高;>60-76%時(shi)(shi),血(xue)糖(tang)值會(hui)偏低(di)。在嚴重脫(tuo)水、休克時(shi)(shi),血(xue)糖(tang)值亦會(hui)偏低(di)且(qie)誤(wu)差較大。當發現有低(di)血(xue)糖(tang)時(shi)(shi),最好作校正后再測定一次,以(yi)排除人為(wei)誤(wu)差(如試紙(zhi)過期、血(xue)量(liang)不(bu)足)。
6、轉運用呼吸暫停監護儀(transport apnea monitor )[6]
呼(hu)吸(xi)(xi)暫停監(jian)護(hu)儀(yi),用于檢(jian)測(ce)與監(jian)護(hu)患兒呼(hu)吸(xi)(xi)狀況,其檢(jian)測(ce)方法主要有兩類型(xing):間接測(ce)量法:呼(hu)吸(xi)(xi)通過壓力墊、腹部傳(chuan)(chuan)感(gan)(gan)器或氣道呼(hu)吸(xi)(xi)音(yin)監(jian)測(ce)器,傳(chuan)(chuan)導訊(xun)號至呼(hu)吸(xi)(xi)阻抗(kang)描記器或體積感(gan)(gan)應描記器中而被(bei)感(gan)(gan)知(zhi)。直接測(ce)量法:采用近(jin)體壓力傳(chuan)(chuan)感(gan)(gan)器及(ji)二氧化碳傳(chuan)(chuan)感(gan)(gan)器,測(ce)定肺部進出(chu)氣流并將訊(xun)號傳(chuan)(chuan)送至熱敏(min)電阻器而被(bei)感(gan)(gan)知(zhi)。當呼(hu)吸(xi)(xi)停止一段時(shi)間后,儀(yi)器即可(ke)發出(chu)報警。
呼(hu)吸暫停監(jian)護儀(yi)種類較多、功(gong)能不(bu)一,有(you)單獨用于監(jian)測(ce)呼(hu)吸狀況(kuang)者(zhe)(zhe),亦有(you)兼作心(xin)電圖(tu)監(jian)測(ce)者(zhe)(zhe),后者(zhe)(zhe)類似于呼(hu)吸心(xin)電監(jian)護儀(yi),亦有(you)可作血氧(yang)飽和度及無創血壓監(jian)測(ce)者(zhe)(zhe)。
早(zao)產(chan)兒(er)(er)、低出(chu)生體重兒(er)(er)或(huo)高危兒(er)(er)易(yi)發生呼吸(xi)(xi)暫(zan)停(ting)、由于(yu)轉運(yun)期間汽(qi)車的(de)震(zhen)動,呼吸(xi)(xi)微(wei)弱的(de)患兒(er)(er),其呼吸(xi)(xi)狀(zhuang)況(kuang)不易(yi)用肉眼觀察,采用呼吸(xi)(xi)暫(zan)停(ting)監護(hu)儀,設(she)定一定的(de)監護(hu)參數(shu),于(yu)呼吸(xi)(xi)暫(zan)停(ting)時間超過設(she)定值時即可報警(jing),有(you)利(li)于(yu)對患兒(er)(er)的(de)處理(li)。
一(yi)(yi)(yi)(yi)臺良好的新(xin)生(sheng)兒(er)轉(zhuan)(zhuan)運用(yong)呼(hu)(hu)吸(xi)暫停監護儀,要求:①功(gong)能單一(yi)(yi)(yi)(yi):新(xin)生(sheng)兒(er)除非有(you)心臟(zang)疾患,一(yi)(yi)(yi)(yi)般(ban)在轉(zhuan)(zhuan)運期間(jian)作心電(dian)圖(tu)監護意義不大(da),因轉(zhuan)(zhuan)運期間(jian)心電(dian)極放(fang)置常不準確,此時顯(xian)(xian)示(shi)的心電(dian)波(bo)型(xing)與實際波(bo)型(xing)有(you)一(yi)(yi)(yi)(yi)定差距而無分析價(jia)值,僅監測心率則用(yong)脈搏血氧測定儀已(yi)達目的;②體積小、重量(liang)輕,便(bian)于攜帶:重量(liang)選用(yong)0.3-0.6kg者;③靈敏(min)度高,一(yi)(yi)(yi)(yi)般(ban)為0.1-0.2歐(ou)姆(mu)阻抗;④呼(hu)(hu)吸(xi)暫停時間(jian)設置為10-20秒可調,有(you)呼(hu)(hu)吸(xi)頻率顯(xian)(xian)示(shi)及視覺(jue)、聽覺(jue)報警;⑤采用(yong)1-4個(ge)堿性電(dian)池,工作時間(jian)為400-2000h,某些則用(yong)鈕(niu)扣電(dian)池,個(ge)別尚可外接交流電(dian);⑥傳感(gan)器采用(yong)腹(fu)部傳感(gan)器或壓力墊。
參考文獻:
[1] ECRI: Incubators,Infant Mobile Healthcare Product Comperison System 1998,April:1-17
[2] ECRI:Ventilators,Partable Healthcare Product Comparison System..1998.May:1-12
[3] ECRI:Omimeters Pump Syringe Healthcare Product Comparison System 1998,Fedruary:1-49.
[4] ECRI:Infusion Pump Syringe Healthcare Product Compqrison System 1998 Fedruqry:1-20
[5] ECRI:Blood ghuoose monitors ,Portable Healthcare Product Comparison System 1998 April:1-29
[6] ECRI:Apnea monitors Healthcare Product Comparison System 1998 January:1-22
收(shou)稿(gao)日(ri)期:2001-02-23
注:文章摘自《小兒急救醫學》2001年5月第8卷第2期
本文由廣州佳譽醫療器械有限公司 再編輯
陳克正
(廣(guang)州(zhou)市(shi)兒童(tong)醫院,廣(guang)東 廣(guang)州(zhou) 510120)
中圖分(fen)類號(hao):R720.597 文(wen)獻標識碼:C 文(wen)章(zhang)編號(hao):1007-9459(2001)-02-0073-03