简介:Beforethe1950s,D-transpositionofthegreatarterieswasassociatedwithnearly90%mortalitywithinthefirstyearoflife.TheMustardandSenningproceduresresultedinasignificantincreaseinthelifespanofthesepatientsbutwithnotablelong-termcomplications,includingarrhythmias,sinusnodedysfunction,chronotropicincompetence,andrightventricularsystolicdysfunction.Thearterialswitchoperation(firstdescribedbyAdibJatene)initiallyresultedinnearlyuniversaldeath.However,theuseofcoronarybuttonsforcoronaryarterytranslocationhasimprovedoperativesurvivaldramatically.Itisnowconsideredthetreatmentofchoiceinpatientsamendabletothearterialswitchoperation.Consideredananatomicrepair,resultinginconcordantventriculoarterialconnectionsandasystemicleftventricle,thearterialswitchoperationreducestheincidenceofventriculardysfunction.However,itisalsoassociatedwithlong-termcomplications,includingaorticrootdilatation,aorticvalveregurgitation,rightventricularoutflowtractobstructions,coronaryarterystenosis/compression,andbranchpulmonaryarterystenosis.
简介:摘要悬吊肝脏,于横结肠中部大网膜附着处向左切开网膜,分离切断胃网膜左血管,至胃短血管第二支,清扫第4sb组淋巴结;分离横结肠系膜前叶右侧部分至大网膜完全从结肠离断,显露胰头、十二指肠球部,离断胃网膜右动静脉,清扫第4d、6组淋巴结;从右向左,从下向上剥离胰腺被膜;显露胰腺上缘,分离肝总动脉表面,清扫第8a、12a组淋巴结;分离切断胃左动静脉,沿脾动脉向左分离至胃后血管为止,清扫第7、9、11p组淋巴结;解剖胃小弯区域,离断肝胃韧带,分离胃右动静脉并清扫肝十二指肠韧带的第5、12a组淋巴结;暴露右侧膈肌角,游离至食管裂孔,清扫第1、3组淋巴结。胃肠重建采用直线切割闭合器行BillrothⅡ式吻合,共同开口以倒刺线缝闭。
简介:Comparedwithtraditionalmagneticinductiontomography(MIT)system,theinnovationofthispaperisthatthefunctionofvoicebroadcastbasedonWT588Dmoduleisaddedtothesystem.ThenewMITsystemavoidsfrequentlylookingintotheinstrumentanddecreasessartificiallyreadingresidualfromthehardwaredebuggingtothetestprocess.Itmakestheprocessofdataacquisitioneasierandenhancestheaccuracyandefficiencyofdetectioninthesystem.Italsogivesadetaileddescriptiontooptimizethedesignofsoftwareandhardware.Thevoicebroadcastsubsystemhastheadvantagesofsimpleintegralstructure,highqualitysound,lowcost,convenientfunctionexpansion,whichcanbeusedasatemplatebasedontheWT588Dmodularappliedinotherrelatedfields.
简介:Objective:ToevaluateandcomparethediagnosticvalueinatlantoaxialsubluxationbyCTthree-dimensional(3D)reconstruction.Methods:3Dreconstructionfimdingsof41patientswithatlantoaxiaisubluxationwereretrospectivelyanalyzed,andcomparisonsweremadeamongimagesoftransversesection,multiplanarreformorting(MPR),surfaceshadedisplay(SSD),maximumintensityproject(MIP),andvolumerendering(VR).Results:Of41patientswithatlantoaxialsubluxation,31belongedtorotarydislocation,5antedislocation,and5hinddislocation.Allthecasesshowedthedislocatedjointpanelofatlantoaxialarticulation.Fifteencasesshoweddeviationoftheodontoidprocessand8caseswideneddistancebetweenthedensandanteriorarchoftheatlas.ThedislocatedjointpanelofatlantoaxialarticulationwasmoreclearlyseenwithSSD-3Dimagingthananyothermethods.Conclusions:AtlantoaxialsubluxationcanwellbediagnosedbyCT3Dreconstruction,inwhichSSD-3Dimagingisoptimal.
简介:Inrecentyears,thevolumetricapproachof3Dreconstructionhasemergedasapowerfulclinicmethodforbiomedicalapplications.Thisapproachisbasedonavoxelrepresentedobjectwhichmaintainsmanydetailsofthesurfaceandtheinternalcon-structuresoftheoriginalbody.Becauseofahugeamountofdata,thevolumedatasettakesalargesizeofmemory,andahighprocessingspeedisrequiredinorderto
简介:摘要由于先天体内贮存不足(早产、多胎、孕期营养不良),维生素D摄入不足(紫外线照射不足、饮食缺乏维生素D等)和慢性消化道疾病造成的维生素D吸收不良等多种原因造成的维生素D缺乏,是儿童期一个重要的健康危险因素,影响儿童生长发育、智力发育和身心健康。
简介:摘要:相比传统技术,3D打印技术具有个性化的快速定制功能,在医疗设备维修中使用尤为明显,可以显著降低医疗设备的维修成本,节约维修时间,及时快速的解决临床故障报修。本文将以此为前提,浅析如何利用3D打印技术,解决实际的医疗设备维修,以及该技术在实际业务中的具体应用策略。
简介:摘要维生素D缺乏可致复发性口腔溃疡。本文报道2例维生素D缺乏致顽固性口腔溃疡患者经积极补充维生素D后治愈,强调在顽固性口腔溃疡患者的诊治中应注重筛查25-羟维生素D等指标,提高对该病的临床诊治能力。
简介:摘要目的系统评价3D与2D腹腔镜在直肠癌根治术的近期临床疗效。方法计算机检索PubMed、The Cochrane Library、Web of Science、Embase、CNKI、WanFang和VIP国内外数据库中比较3D与2D腹腔镜直肠癌根治术近期疗效的文献,并搜集相关文献的参考文献,检索时间从数据库建立至2019年3月1日。运用Review Manager 5.2软件对相关指标进行Meta分析。结果最终纳入11个研究,包含2个随机对照研究(RCT),9个非RCT,共1 169例患者纳入分析,其中3D腹腔镜组601例,2D腹腔镜组568例。3D腹腔镜组术中出血量(P<0.00001)、手术时间(P<0.00001)、首次排气时间(P<0.0001)、住院时间(P=0.04)、并发症发生率(P=0.04)、淋巴结获取数目(P<0.00001)均优于2D腹腔镜组,差异有统计学意义。两组中转开腹、环周切缘(CRM)阳性率比较,差异无统计学意义(P>0.05)。手术时间的漏斗图提示无发表偏倚(P=0.693)。结论与2D腹腔镜直肠癌手术相比,3D腹腔镜同样能够达到直肠癌根治性切除,且具有手术时间短、术中失血量少、术后并发症低、住院时间短、清扫淋巴结数目多等优势。