支气管镜的基本操作

支气管镜的基本操作方苏榕支气管镜的适应症，禁忌症支气管镜术前的准备工作气管-支气管的解剖结构支气管镜的基本操作方法支气管镜的适应症诊断方面不明原因的咯血，慢性咳嗽，声音嘶哑，局限性哮鸣音支气管感染性疾病的病因学诊断肺炎胸片或CT检查异常已诊断肺癌术前检查，指导手术范围及估计预后食管-支气管瘘的确诊胸部外伤，怀疑有支气管裂伤和断裂治疗方面取出支气管异物某些肺不张，肺脓疡等咯血治疗引导气管插管支气管镜下治疗支气管镜的禁忌症活动性大出血不能纠正的出血倾向尿毒症，活检易出血者严重肺动脉高压，活检易出血者严重心、肺功能障碍严重心律失常新近发生心肌梗死或心绞痛疑有主动脉瘤全身情况极度衰竭严重的上腔静脉阻塞综合征支气管镜术前准备术前检查了解病史、测量血压及心肺体检胸片或胸部CT检查出、凝血时间、血小板记数乙肝两对半ECG检查血气分析患者准备向患者讲明检查目的、意义、配合方法术前签字术前禁食6小时术前30分钟肌注安定和阿托品有异齿术前摘下气管—支气管的解剖结构气管上段固定于喉部，下段与主支气管相连接。气管由15－20个软骨环构成，成人气管横径18－20mm，长度10－13cm，气管分叉角度55－65°。气管前有甲状腺，后与食道相邻。主支气管右主支气管短而粗，平均长度25mm，直径11－15mm。左主支气管细而长,平均长度50mm,直径9－11mm。右侧叶支气管右上叶支气管长度9mm，直径8mm右中间段支气管长度8－20mm，直径8mm右中叶支气管长度10－20mm,直径7mm右下叶支气管长度9mm,直径7mm左侧叶支气管左上叶支气管距左上叶支气管开口约5mm处，向前下处方发出舌段。左下叶支气管距左下叶支气管开口约5mm处，向后发出背段。支气管镜操作方法支气管分支命名右肺左肺上叶B1尖段上叶上叶分支B1+2尖后段B2后段B3前段B3前段中叶B4外段舌叶B4上舌段B5内段B5下舌段下叶B6背段下叶B6背段B7内基底段B8前基底段B8前基底段B9外基底段B9外基底段B10后基底段B10后基底段Group1ExercisesStep1:nosetolarynxThescopeisadvancedfromthenosetothelarynx.ThisstepincludeslocalanesthesiaStep2:larynxtosubglottisFromthelarynxthetracheaisenteredtothesubglotticarea.Iffromthehead:oncethevocalcordsarepassedthescopeisslightlyflexeddownwards.Iffromthefront:oncethevocalcordsarepassedthescopeisslightlyflexedupwards.Step3:FollowthecurvetothecarinaTheTracheaisnota“straightpipe”;Itdeviatesposteriorlyandslightlytotherightwhenapproachingthemaincarina.Step4a:CarinatoleftmainbronchusFromtheneutralpositiontheLMBisenteredjustbytwistingthewristtotheleftandadvancingfor1-2cm.Step4b:CarinatorightmainbronchusFromtheneutralpositiontheRMBisenteredjustbytwistingthewristtotherightandadvancingthescopefor1-2cmFromtheneutralpositiontheleftandrightmainbronchiareenteredalternativelyjustbytwistingthewristandadvancingthescopeforfewcm.Step4c:Left-right-neutralStep5a:Down-up-leftmainbronchusThescopeisslowlyadvancedthepulledbackuptheLMBwhilealwayskeepingitinthemiddleoftheairwaylumen.Step5b:Down-uprightmainbronchusThescopeisslowlyadvanceddowntheRMBtoRLLandpulledbackupwardswhilealwayskeepingitinthemiddleoftheairwaylumen.Group2ExercisesStep6a:LeftmaintoleftupperlobebronchusFromtheLMBthescopeisadvancedtotheentranceoftheLULbronchus.Step6b:LeftmaintoleftlowerlobebronchusThescopeisadvanceddowntheLMBtotheentranceoftheLLLbronchus.Step6c:RightmaintorightupperlobebronchusThescopeisadvanceddowntheRMBthenwiththewristtwisted60degreesfrommidlinethescopeisflexeduptotheentranceofRUL.Step6d:RightmaintobronchusintermediusFromthecarinaadvancethescopedowntheRMBtothedistalbronchusintermediusandvisualizetheentrancetoRB456andthebasalpyramid.Step6e:RightmaintorightlowerlobebronchusAdvancethescopefromthecarinatotheentranceoftheRLLwhilealwayskeepingitinthemidline.Group3ExercisesStep7a:LeftupperlobeunodosFromthecarina,thescopeisadvancedtoLULentrance;there,justbythumbmovement,thelingulaandupperdivisionbronchusarevisualized.Step7b:Leftbeforefivesix(LB456)FromtheLMB,thelingulaisentered,thenthescopeispulledbackintothedistalLMBandthescopeisadvancedintothesuperiorsegmentoftheLLL.!Wristmovementsare“inthemirror”Step7c:LeftB6-8,9,10WiththescopeattheLLLbronchusentrance,thesuperiorsegmentisentered,thenalternately,theantero,lateralandpostero-basalsegmentsoftheLLLareentered.Step7d:Rightupperlobeuno-dos-tresFromtheRMBthescopeisadvancedandflexedupintotheRULbronchuswherejustbywristandthumbmovementsthethreesegmentsarevisualized;thenthescopeiswithdrawntothemaincarina.Step7e:Rightbeforefivesix(RB4,5,6)Fromthedistalbronchusintermedius,theRMLandsuperiorsegmentareenteredalternatively;!Wristmovementsare“inthemirror”.Step7f:Rightmedialbasal(RB7)(d”Artagnan)Fromthedistalbronchusintermediusthescopeisadvancedandthemedio-basalsegmentisentered.Step8a:LeftlowerlobebasalpyramidFromtheentranceoftheLLLbronchusgoinandoutofthe3basalsegments,thenwithdrawthescopetothecarina.Step8b:Rightlowerlobebasalpyramid(D’Artagnanandthethreemusketeers)FromthecarinaadvancethescopetotheRLLbronchusentranceandthenenterthemedial-basalsegment,pullbackandthenexaminetheotherthreesegmentsofthebasalpyramid.