肌松藥的臨床應用Theclinicaluseofneuromuscularblockade

2021/4/261概述肌松藥是全麻中重要的輔助用藥肌松藥是麻醉藥嗎？不是1942年以前……深麻醉---良好肌松1942年箭毒應用于臨床，臨床麻醉就發(fā)生了革命性的變化：淺麻醉+肌松藥-----良好肌松2021/4/262Awareness術中知曉（awareness）是一種嚴重的全麻術中并發(fā)癥，會給病人造成巨大的精神損害。尤其易發(fā)生于肌松藥應用不當的全麻麻醉中。2021/4/263臨床常用肌松藥去極化肌松藥琥珀膽堿suxamethonium,succinylcholine,scoline非去極化肌松藥潘庫溴銨pancuronium,pavulon維庫溴銨vecuronium阿曲庫銨atracurium,tracrium哌庫溴銨pipecuronium羅庫溴銨rocuronium美維松mivacurium2021/4/264SuccinycholineDosage:

1-1.5mg/kg,repeatedsmalldose10mgor1gin500or1000ml,titratedtoeffectSideeffectsandclinicalconsiderations:

A.CardiovascularB.FasciculationsC.HyperkalemiaD.MusclepainsE.IntragastricpressureelevationF.IntraocularpressureelevationG.GeneralizedcontractionsH.ProlongedparalysisI.Intracranialpressure2021/4/265Tubocurarine(筒箭毒堿)Dosage

forintubation:0.5-0.6mg/kgforintra-operative:0.15mg/kg0.05mg/kgSideeffectsandclinicalconsiderations:

hypotensionandtachycardia

2021/4/266Metocurine甲筒箭毒Dosage

Forintubation:0.3mg/kgForintraoperative:0.08mg/kg0.03mg/kgSideeffectsandclinicalconsiderations:

Hypotensiontachycardia,bronchospasm,allergicreactions2021/4/267AtracuriumDosage

Forintubation:0.5mg/kgForintraoperative:0.25mg/kg0.1mg/kgevery10-20minSideeffectsandclinicalconsiderations:

Itmustbestoredat2-8℃.

laudanosine(N-甲基四氫罌粟堿)toxicity2021/4/268CistracuriumDosageForintubation:0.1-0.15mg/kgwithin2minForinfusion:1-2μg/kg/minSideeffectsandclinicalconsiderations:Laudanosinetoxicity,pHandtemperaturesensitivity,andchemicalincompatibility(alkalinesolutionsuchasthiopentalprecipitate)

2021/4/269MivacuriumDosage

Forintubation:0.1-0.2mg/kgForinfusion:4-10μg/kg/minSideeffectsandclinicalconsiderations:

2021/4/26109、人的價值，在招收誘惑的一瞬間被決定。2023/2/32023/2/3Friday,February3,202310、低頭要有勇氣，抬頭要有低氣。2023/2/32023/2/32023/2/32/3/20234:34:27PM11、人總是珍惜為得到。2023/2/32023/2/32023/2/3Feb-2303-Feb-2312、人亂于心，不寬余請。2023/2/32023/2/32023/2/3Friday,February3,202313、生氣是拿別人做錯的事來懲罰自己。2023/2/32023/2/32023/2/32023/2/32/3/202314、抱最大的希望，作最大的努力。03二月20232023/2/32023/2/32023/2/315、一個人炫耀什么，說明他內心缺少什么。。二月232023/2/32023/2/32023/2/32/3/202316、業(yè)余生活要有意義，不要越軌。2023/2/32023/2/303February202317、一個人即使已登上頂峰，也仍要自強不息。2023/2/32023/2/32023/2/32023/2/3Doxacurium(多沙氯銨)Dosage

Forintubation:0.05mg/kgwithin5minForintraoperative:0.02mg/kg0.005mg/kgSideeffectsandclinicalconsiderations:Devoidofcardiovascularandhistamine-releasingsideeffects.Durationtime:60-90minOnsettimeslower:4-6min2021/4/2612PancuroniumDosage

Forintubation:0.08-0.12mg/kgForintraoperative:0.04mg/kg20-40min0.01mg/kgSideeffectsandclinicalconsiderations:Itmustbestoredat2-8℃.HypertensionandtachycardiaAllergicreactionsDysrhythmias2021/4/2613VecuroniumDosageForintubation:0.08-0.12mg/kgForintraoperative:0.04mg/kg0.01mg/kgevery15-20minForinfusion:1-2μg/kg/minSideeffectsandclinicalconsiderations:DevoidofcardiovasculareffectsLiverfailure2021/4/2614PipecuroniumDosageForintubation:0.06-0.1mg/kg

Sideeffectsandclinicalconsiderations:Comparedwithpancuronium,pipecuroniumdevoidofcardiovascularandhistaminereleasesideeffects,onsetofactionanddurationofactionaresimilarforbothdrugs2021/4/2615RocuroniumDosageForintubation:0.45-0.9mg/kgForintraoperative:0.15mg/kgForinfusion:5-12μg/kg/minSideeffectsandclinicalconsiderations:0.9-1.2mg/kgwithin60-90s2021/4/2616RapacuroniumDosage:Forintubation:1.5mg/kgwithin1minin85%patiensanddurationtime10-20minSideeffectsandclinicalconsiderations:

HypertensionandraiseHRmildandtransient

Severebronchospasm2021/4/2617肌松藥的臨床應用一、在麻醉中的主要應用1.氣管插管(intubation)去極化肌松藥----琥珀膽堿非去極化肌松藥---潘庫溴銨、維庫溴銨、阿曲庫銨、米庫氯銨、羅庫溴銨2.肌松的術中維持滿足手術需要3.其他：ICU及治療痙攣性疾病2021/4/2618二、肌松藥的給藥方法單次間斷靜注給藥持續(xù)靜脈輸注給藥計算機自動化反饋控制給藥予給量法肌松藥的復合應用----最好應用同一種肌松藥2021/4/2619肌松藥的不良反應1.自主神經系統作用2.組胺釋放2021/4/2620影響肌松藥作用的因素影響肌松藥的藥代動力學肝腎功能2021/4/2621影響肌松藥的藥效動力學1.水、電解質和酸堿平衡2.低溫3.年齡4神經肌肉疾病重癥肌無力5.假性膽堿酯酶異常2021/4/2622藥物的相互作用1.吸入全麻藥2.局麻藥和抗心律失常藥3.抗生素4.抗驚厥藥和精神病藥5.其他2021/4/2623肌松藥的拮抗增加乙酰膽堿濃度或延長乙酰膽堿作用時間的藥物均能拮抗非去極化肌松藥的肌松作用?？鼓憠A酯酶藥物:新斯的明極量0.07mg/kg吡啶斯的明0.28mg/kg依酚氯銨1mg/kg2021/4/2624抗膽堿酯酶藥+抗膽堿藥:

新斯的明0.035--0.07mg/kg+格隆溴銨7g/kg依酚氯銨0.5--1mg/kg+阿托品7g/kg臨床常用：新斯的明+阿托品2：12021/4/2625肌松藥的拮抗時機:T1>25%2021/4/2626Neuromuscularmonitoring肌松監(jiān)測：刺激外周神經干（一般為尺神經），誘發(fā)該神經支配的肌群收縮，據肌收縮效應評價肌松藥的作用程度、時效及阻滯性質。2021/4/2627Supramaximalstimulation20to25percentabovethatnecessaryforamaximalresponseTheoptimalpulsedurationis0.2to0.3msTheimpulseshouldbemonophasicandrectangular(i.e.,itshouldbeasquarewave)becauseabiphasicpulsemaycauseaburstofactionpotentialsinthenerve(repetitivefiring),increasingtheresponsetothestimulation2021/4/2628Patternsofstimulation1.單刺激（singletwitchstimulation）2.強直刺激（tetanicstimulation）3.四個成串刺激（trainoffourTOF）4.強直刺激后記數（posttetaniccountPTC）5.雙短強直刺激（double-burststimulationDBS）2021/4/2629Singletwitchstimulationfrequenciesof0.1to1.0Hz

2021/4/2630Trainoffour(TOF)2021/4/2631Tetanicstimulation2021/4/2632Post-TetanicCountStimulation

2021/4/2633RelationshipbetweentimetothefirstreactiontoTOFnervestimulationandthenumberofpost-tetanictwitches(i.e.,thepost-tetaniccount)duringintenseblockadecausedbypancuronium,atracurium,andvecuronium.Meancurvesand95percentpredictionregionsareshown2021/4/2634Double-BurstStimulation

2021/4/2635THENERVESTIMULATOR

Thestimulusshouldproduceamonophasicandrectangularwaveform,andthelengthofthepulseshouldnotexceed0.2to0.3ms60to70mA,butnotmorethan80mA2021/4/26362021/4/2637RECORDINGOF

EVOKEDRESPONSES

MechanomyographyElectromyographyAcceleromyography

2021/4/2638Electromyography2021/4/26392021/4/2640Acceleromyography

2021/4/26412021/4/2642肌松監(jiān)測的臨床應用1.肝腎功能障礙2.重癥肌無力3.為避免術后肌松拮抗的病人4.呼吸功能嚴重受損，術后需肌松充分恢復的病人5.長時間應用或持續(xù)靜點肌松藥的病人。2021/4/2643CaseDiscussionA72-year-oldmanhasundergonegeneralanesthesiafortransurethralresectionoftheprostate。Twentyminutesafterconclusi