CRE耐药基因的流行情况与耐药情况

目的 研究宁波大学附属人民医院耐碳青霉烯类肠杆菌科细菌(CRE)的耐药情况及分子流行病学特征等,为CRE的院内防控提供依据。方法 收集宁波大学附属人民医院2017—2020年细菌室保存的CRE样品,对其进行细菌鉴定、药敏试验、耐药基因检测及同源性分析。结果 共收集222株CRE,检测出大肠埃希菌78株,肺炎克雷伯菌71株,阴沟肠杆菌28株,其他肠杆菌45株,仅对阿米卡星、庆大霉素、妥布霉素、米诺环素具有较好的敏感性。碳青霉烯酶耐药基因分布：NDM基因131株,KPC基因56株,IMP基因13株,VIM基因1株,OXA-48基因1株,未检出20株。49株产KPC酶肺炎克雷伯菌MLST分型显示：ST11型26株,ST15型7株,其余还有9种ST分型。结论 宁波大学附属人民医院分离的CRE主要是大肠埃希菌和肺炎克雷伯菌,其中NDM和KPC为主要耐药基因型。     

耐碳青霉烯肠杆菌科细菌的耐药性和分子特征

目的了解该院耐碳青霉烯肠杆菌科细菌(CRE)的流行特点、耐药现状及分子型别,为控制CRE的传播及临床治疗提供科学依据。方法收集该院微生物室2017年1月至2019年5月临床标本中分离的91株CRE,使用Vitek 2Compact全自动细菌鉴定系统进行细菌鉴定和药敏试验,改良碳青霉烯灭活试验(mCIM)和乙二胺四乙酸改良碳青霉烯灭活试验(eCIM)联合检测碳青霉烯酶表型,采用PCR扩增耐药基因,多位点序列分型(MLST)分析菌株间同源性,采用WHONET5.6和SPSS23.0进行统计分析。结果 91株CRE菌株中,肺炎克雷伯菌42株,大肠埃希菌23株,阴沟肠杆菌15株,其他CRE 11株。CRE菌株对替加环素和阿米卡星敏感性较高,但对其他大部分抗菌药物耐药性较高。mCIM筛选碳青霉烯酶的灵敏度为97.1%,特异度为100.0%。60株CRE携带1种碳青霉烯酶基因,8株CRE菌株合并2种碳青霉烯酶基因,毒力基因wcaG检出率为2.4%。耐碳青霉烯类药物肺炎克雷伯菌的MLST结果是ST11型12株,ST37型8株,ST17型8株,ST147型2株,ST48型1株;耐碳青霉烯类药物大肠埃希菌的MLST结果是ST167型17株;耐青霉烯类药物阴沟肠杆菌的MLST结果是ST418型6株,ST93型4株,ST74型2株,ST175型1株。结论该院CRE菌株对碳青霉烯类抗菌药物的耐药机制复杂。分子型别较多,各菌种呈现不同特点。     

宿迁地区碳青霉烯耐药肠杆菌科细菌耐药性及碳青霉烯酶基因型分析

目的了解宿迁地区耐碳青霉烯肠杆菌科细菌(carbapenem-resistant Enterobacteriaceae,CRE)分布、耐药特点及产碳青霉烯酶的主要类型。方法收集宿迁地区3家三级综合医院2016年1月至12月临床分离的CRE非重复菌株52株,E-test法测定厄他培南、亚胺培南、美罗培南、替加环素的最低抑菌浓度(MICs),纸片扩散法检测其他抗菌药物的敏感性,PCR检测碳青霉烯酶基因。结果 CRE菌株标本来源广泛,痰液(38.5%)和尿液(28.8%)位于前两位;菌种分布以大肠埃希菌为主,其次为肺炎克雷伯菌、阴沟肠杆菌。大部分CRE菌株对碳青霉烯类药物显示高水平耐药(MICs32 mg/L),未检测到碳青霉烯酶基因的菌株中厄他培南比亚胺培南及美罗培南显示更高的MICs。CRE菌株除对阿米卡星、米诺环素和替加环素的耐药率分别为40.4%、30.8%和0外,对大多临床常用抗菌药物耐药率超过90%。49株CRE检测到碳青霉烯酶基因,产酶比例94.2%,其中blaNDM-1占主导(79.6%),blaKPC次之(22.4%)。blaNDM-1菌株主要为大肠埃希菌(66.7%)、肺炎克雷伯菌(15.4%)和阴沟肠杆菌(10.3%)。blaKPC阳性菌株中,除1株同时携带blaNDM-1为大肠埃希菌,其余均是肺炎克雷伯菌。结论宿迁地区CRE以大肠埃希菌为主,对常用抗菌药物呈高度耐药,产生碳青霉烯酶是对碳青霉烯类耐药的主要耐药机制,其中blaNDM-1是主要型别。临床应加强CRE的监测工作,采取合理的预防控制措施,防止耐药基因的传播。     

碳青霉烯类耐药肠杆菌目细菌耐药性及耐药基因分析

目的 探讨医院碳青霉烯类耐药肠杆菌目细菌(CRE)的临床耐药性及耐药表型和基因型,为医院CRE菌株感染的临床治疗及医院感染暴发的预防和控制提供科学依据。方法 收集2020年7月至2023年1月日照市中医医院临床患者标本中分离的77株CRE菌株,采用全自动微生物分析仪进行细菌鉴定和药敏试验,采用改良碳青霉烯酶灭活试验(mCIM)和乙二胺四乙酸(EDTA)改良碳青霉烯酶灭活试验(eCIM)联合检测碳青霉烯酶表型,采用聚合酶链反应(PCR)扩增耐药基因并进行测序分型。结果 77株CRE菌株主要分离自痰液,其次是尿液、胸腔积液;科室来源主要是颅脑外科、重症医学科、脑卒中监护室。CRE菌株中肺炎克雷伯菌33株,大肠埃希菌15株,阴沟肠杆菌12株,其他细菌17株。CRE菌株对替加环素敏感性为97.4%,阿米卡星为44.2%,复方磺胺甲噁唑为39.0%,对其他抗菌药物的敏感性均低于20.0%。mCIM筛选碳青霉烯酶菌株的灵敏度为95.9%,特异度为100.0%。PCR扩增结果显示49株CRE菌株携带NDM基因,24株CRE菌株携带KPC基因,1株CRE菌株携带IMP基因,3株未检出碳青霉烯酶基因;基...     

耐碳青霉烯类抗菌药物的耐药性及其相关影响因素

目的对耐碳青霉烯类肠杆菌科产碳青霉烯酶、整合子分布及外膜孔蛋白的缺失情况进行分析和特征讨论。方法收集宜宾市第三人民医院患者的痰液、尿液、分泌物、血液等标本,临床分离的87株对碳青霉烯类抗菌药物耐药的肠杆菌科细菌(CRE)菌株进行分析。结果对87株CRE菌株进行聚合酶链反应扩增碳青霉烯酶基因,检出碳青霉烯酶基因74株,占85.06%。包括肺炎克雷伯菌65株(87.84%),大肠埃希菌6株(8.11%),阴沟肠杆菌、产酸克雷伯菌、产气肠杆菌各1株,分别占1.35%。整合酶基因检测结果显示,Ⅰ类整合子检出52株,检出率为59.77%(52/87),其中47株来自产碳青霉烯酶菌株,5株为非产碳青霉烯酶菌株,同时均以肺炎克雷伯菌检出的比例最高(分别为39株和3株);Ⅱ类整合子检出8株,检出率为9.20%(8/87),其中4株来自产碳青霉烯酶菌株,4株为非产碳青霉烯酶菌株;未检出Ⅲ类整合子。Ⅰ类和Ⅱ类整合子检出3株,2株来自产碳青霉烯酶的肺炎克雷伯菌株,1株为非产碳青霉烯酶的肺炎克雷伯菌株。肺炎克雷伯菌菌株外膜孔蛋白缺失情况表明,70株对碳青霉烯类抗菌药物耐药的肺炎克雷伯菌株中,膜蛋白无异常达18.57%,其中产碳青霉烯酶菌株中膜蛋白无异常为16.92%;OmpK35表达下调的菌株占24.29%,OmpK35缺失的占10.00%;OmpK36表达下调和缺失的比例分别为4.23%和57.14%;产碳青霉烯酶菌株中OmpK35表达下调的菌株占50.77%,OmpK35缺失的占9.23%;OmpK36表达下调和缺失的比例分别为3.08%和55.38%。结论对碳青霉烯类抗菌药物耐药的CRE的耐药情况非常严重,且肺炎克雷伯菌碳青霉烯酶基因检出最高,耐药最严重;耐药性的发生还与整合酶基因Ⅰ类整合子,以及孔膜蛋白表达减低与缺失密切相关。     

临床分离CRE菌株碳青霉烯酶表型检测和耐药情况分析

目的 研究临床分离碳青霉烯类耐药肠杆菌目细菌(CRE)的分离情况和耐药机制,为临床抗感染治疗提供参考。方法 从临床分离的200株非重复肠杆菌目细菌中筛选出亚胺培南或美罗培南耐药菌株,用碳青霉烯酶抑制剂增强法进行表型检测。结果 200株肠杆菌目细菌中检出CRE 25株,主要分布在重症监护室(ICU)(60%),其中以肺炎克雷伯菌为主(88%)。25株CRE碳青霉烯酶表型检测阳性19株,其中A类酶阳性17株,B类酶阳性2株。结论临床分离CRE菌株多分布在ICU,以肺炎克雷伯菌为主,耐药机制主要是产A类碳青霉烯酶,相关科室应重视该类菌的隔离与防护。     

碳青霉烯类耐药肠杆菌科细菌的耐药机制研究及其在医院感染控制中的应用

目的探讨碳青霉烯类耐药肠杆菌科细菌(CRE)的耐药机制及其在医院感染控制中的作用。方法选取2012年1月至2013年12月某院分离得到的肠杆菌科细菌5 604株,美罗培南抑菌环直径小于或等于20mm的细菌100株,经抗菌药物试验鉴定证实CRE共11株,进行耐药试验;使用微量肉汤法、改良Hodge试验、亚胺培南-乙二胺四乙酸(IPM-EDTA)复合纸片试验、IPM-EDTA双纸片试验、超广谱β-内酰胺酶(ESBLs)确证试验及AmpC试验来筛选耐药基因,应用PCR检测碳青霉烯酶的基因及阳性产物测序。结果 CRE菌株对头孢菌素类、青霉素类、碳青霉烯类及头孢西丁类等抗菌药物都表现出一定程度的耐药性,差异无统计学意义(P0.05);PCR测序结果显示,blaIMP阳性菌株6株,均属于IMP-4型;blaKPC阳性菌株3株,均为KPC-2型;细菌耐药基因检测结果方面,筛查出1株携带2种碳青霉烯酶基因的肺炎克雷伯菌Kpn6617,其余筛查结果为阴性。结论产生碳青霉烯酶是细菌耐药的主要原因,IMP-4是主要酶型;应重视医院感染细菌耐药性特点,从而为临床合理用药提供参考。     

宿迁地区碳青霉烯类耐药肠杆菌科细菌耐药性及碳青霉烯酶基因型分析

目的了解宿迁地区耐碳青霉烯肠杆菌科细菌(carbapenem-resistant Enterobacteriaceae,CRE)分布、耐药特点及产碳青霉烯酶的主要类型。方法收集宿迁地区3家三级综合医院2016年1月至12月临床分离的CRE非重复菌株52株,E-test法测定厄他培南、亚胺培南、美罗培南、替加环素的最低抑菌浓度(MICs),纸片扩散法检测其他抗菌药物的敏感性,PCR检测碳青霉烯酶基因。结果 CRE菌株标本来源广泛,痰液(38.5%)和尿液(28.8%)位于前两位;菌种分布以大肠埃希菌为主,其次为肺炎克雷伯菌、阴沟肠杆菌。大部分CRE菌株对碳青霉烯类药物显示高水平耐药(MICs32 mg/L),未检测到碳青霉烯酶基因的菌株中厄他培南比亚胺培南及美罗培南显示更高的MICs。CRE菌株除对阿米卡星、米诺环素和替加环素的耐药率分别为40.4%、30.8%和0外,对大多临床常用抗菌药物耐药率超过90%。49株CRE检测到碳青霉烯酶基因,产酶比例94.2%,其中blaNDM-1占主导(79.6%),blaKPC次之(22.4%)。blaNDM-1菌株主要为大肠埃希菌(66.7%)、肺炎克雷伯菌(15.4%)和阴沟肠杆菌(10.3%)。blaKPC阳性菌株中,除1株同时携带blaNDM-1为大肠埃希菌,其余均是肺炎克雷伯菌。结论宿迁地区CRE以大肠埃希菌为主,对常用抗菌药物呈高度耐药,产生碳青霉烯酶是对碳青霉烯类耐药的主要耐药机制,其中blaNDM-1是主要型别。临床应加强CRE的监测工作,采取合理的预防控制措施,防止耐药基因的传播。     

山东某院耐碳青霉烯类肠杆菌科细菌临床感染特征及耐药基因分析

目的了解济宁医学院附属医院耐碳青霉烯类肠杆菌科细菌(CRE)临床感染特征、药物敏感性及耐药基因分型,为预防和治疗CRE感染及医院多重耐药菌管理提供参考。方法收集CRE临床分离株93株,采用全自动微生物鉴定系统进行细菌鉴定及体外药物敏感性试验,并通过全自动快速微生物质谱检测系统确证菌株。采用简易碳青霉烯类灭活法(sCIM)试验进行碳青霉烯酶表型确证,采用Xpert Carba-R检测并鉴别碳青霉烯酶分型,通过聚合酶链反应(PCR)扩增碳青霉烯酶耐药基因并进行测序分型。结果济宁医学院附属医院CRE主要分离自痰液样本,其次是血液和尿液样本,科室来源主要为重症监护病房。CRE对临床常用的24种抗菌药物均耐药,对替加环素均敏感。sCIM试验检出79株产碳青霉烯酶;Xpert Carba-R检出KPC基因阳性38株、NDM基因阳性31株、IMP基因阳性6株、NDM+KPC基因阳性4株。PCR扩增结果显示,有38株携带KPC耐药基因,31株携带NDM耐药基因,6株携带IMP耐药基因,4株同时携带KPC和NDM耐药基因,未检出VIM及OXA-48耐药基因。结论济宁医学院附属医院CRE临床分离株对多种临床常用抗菌药物耐药,但对替加环素具有良好的体外敏感性;肺炎克雷伯菌碳青霉烯类耐药基因主要为KPC型,大肠埃希菌主要为NDM型;应加强对CRE的监控,防范其在院内的暴发流行。     

儿童患者中分离的碳青霉烯类耐药肺炎克雷伯菌分子流行病学分析及耐药机制研究

目的研究儿童患者中分离的碳青霉烯类耐药肺炎克雷伯菌(CRKP)的流行特征及耐药机制。方法收集2013年1-12月上海市儿童医院临床微生物室分离的12株碳青霉烯类耐药肺炎克雷伯菌,采用琼脂稀释法检测其对常用抗菌药物的耐药性,乙二胺四乙酸(EDTA)协同试验和3'-氨基苯硼酸(APB)协同试验进行碳青霉烯酶表型分析,PCR扩增及DNA测序进行碳青霉烯酶基因型确证,接合试验检测碳青霉烯酶耐药基因是否位于质粒上,脉冲场凝胶电泳(PFGE)和多位点序列分型(MLST)检测菌株间基因相关性。结果 12株CRKP对多黏菌素E均敏感,对头孢菌素类耐药率均为100%,对亚胺培南、美罗培南和厄他培南耐药率分别为91.7%、91.7%和100%。PCR及DNA测序显示12株CRKP中8株产KPC-2,1株产NDM-1,3株未检出碳青霉烯酶。将12株CRKP与大肠埃希菌J53进行接合,获得3株接合子。PFGE分型显示,12株CRKP可分为4个型3个亚型。MLST结果显示,8株blaKPC阳性肺炎克雷伯菌均为ST11型,1株blaNDM-1阳性肺炎克雷伯菌为ST278,3株不产碳青霉烯酶菌分别为ST76、ST37、ST610。结论产KPC-2型碳青霉烯酶是该院分离的肺炎克雷伯菌对碳青霉烯类抗菌药物耐药的主要机制,产NDM-1阳性的肺炎克雷伯菌已在该院出现。     

Determination of creatine kinase isoenzyme MB activity in serum using immunological inhibition of creatine kinase M subunit activity. Activity kinetics and diagnostic significance in myocardial infarction.

This is a new method for the determination of creatine kinase isoenzyme MB activity in serum. The method uses direct activity measurement of creatine kinase B subunit activity after blocking of CK-M subunit activity by inhibiting antibodies. The test takes no longer than 15 min. The method yields an intra-serial C.V. of 2.0-12.9%, and a C.V. from day to day of 5.5%. The detection limit is 3.4 U/l creatine kinase MB. In the 95 cases with proven myocardial infarction several types of creatine kinase MB activity kinetics could be determined. The percentage of creatine kinase MB of peak CK-total is 6-25%, with a mean of 11.1%. The amount of creatine kinase MB with respect to total CK activity after reinfarction is higher than the amount after initial infarction.     

Dissociable correlates of two classes of retrieval processing in prefrontal cortex

Although substantial evidence suggests that the prefrontal cortex (PFC) implements processes that are critical for accurate episodic memory judgments, the specific roles of different PFC subregions remain unclear. Here, we used event-related functional magnetic resonance imaging to distinguish between prefrontal activity related to operations that (1) influence processing of retrieval cues based on current task demands, or (2) are involved in monitoring the outputs of retrieval. Fourteen participants studied auditory words spoken by a male or female speaker and completed memory tests in which the stimuli were unstudied foil words and studied words spoken by either the same speaker at study, or the alternate speaker. On "general" test trials, participants were to determine whether each word was studied, regardless of the voice of the speaker, whereas on "specific" test trials, participants were to additionally distinguish between studied words that were spoken in the same voice or a different voice at study. Thus, on specific test trials, participants were explicitly required to attend to voice information in order to evaluate each test item. Anterior (right BA 10), dorsolateral prefrontal (right BA 46), and inferior frontal (bilateral BA 47/12) regions were more active during specific than during general trials. Activation in anterior and dorsolateral PFC was enhanced during specific test trials even in response to unstudied items, suggesting that activation in these regions was related to the differential processing of retrieval cues in the two tasks. In contrast, differences between specific and general test trials in inferior frontal regions (bilateral BA 47/12) were seen only for studied items, suggesting a role for these regions in post-retrieval monitoring processes. Results from this study are consistent with the idea that different PFC subregions implement distinct, but complementary processes that collectively support accurate episodic memory judgments.     

俯卧位通气对高海拔地区肺复张治疗无效急性呼吸窘迫综合征患者氧合的影响

目的 探讨俯卧位通气对高海拔地区肺复张术(RM)治疗无效急性呼吸窘迫综合征(ARDS)患者的治疗作用.方法 从海拔2260m的地区医院筛选RM治疗无效的41例ARDS患者[平均氧合指数( PaO2/FiO2)较RM前升高＜20％视为RM无效],依不同病因分为肺内源性ARDS组(ARDSp组)和肺外源性ARDS组(ARDSexp组),每组再按信封法随机分为俯卧位组和仰卧位组,即ARDSp俯卧位组(11例)、ARDSp仰卧位组(9例)、ARDSexp俯卧位组(10例)、ARDSexp仰卧位组(11例).在通气前及通气1、2、3、4h监测动脉血氧分压( PaO2)、PaO2/FiO2、静态顺应性(Cst)、气道阻力(Raw)的变化.结果 通气lh时,ARDSexp俯卧位组PaO2/FiO2( mm Hg,l mm Hg=0.133 kPa)即较通气前显著升高(157.4±40.6比129.3±48.7,P＜0.05),并随通气时间延长呈持续增高趋势,4h达峰值(219.1 ±41.1);且ARDSexp俯卧位组通气3h内PaO2/FiO2较其他3组显著增高,另3组间则差异无统计学意义.ARDSp俯卧位组、ARDSexp俯卧位组通气4h时PaO2/FiO2均较相应仰卧位组显著增高(208.8±39.7比127.4±47.1,219.1±41.1比124.9±50.8,均P＜0.05).4组通气前后Cst无显著改变,各组间差异也无统计学意义.ARDSp俯卧位组通气4h时Raw(cmH2O·L-1·s-1)较通气前显著降低(6.8±1.7比10.7±1.8,P＜0.05),且明显低于其他3组;其他3组各时间点Raw组内及组间比较差异均无统计学意义.结论 俯卧位通气作为ARDS机械通气重要策略之一,可以改善RM无效高原ARDS患者的氧合,为抢救患者赢得宝贵的时间.     

Digital imaging among medical facilities

The Department of Veterans Affairs (VA) in the USA operates a network of 172 medical centres which all utilize a hospital information system (HIS) which has been developed and is currently maintained by the VA. During the past several years, an image management and communication module has been developed, installed and clinically utilized at the Washington DC and Maryland VA Medical Centres. This image management and communication system, referred to as the decentralized hospital computer program (DHCP) imaging system, is fully integrated with a commercial picture archiving and communication system (PACS). The system is utilized to capture, archive, and display all images generated within the hospital including radiology, nuclear medicine, pathology, endoscopy, bronchoscopy, and dermatology, intraoperative photographs, ECG data, and a limited number of paper documents. The ultimate goal of the project is to have all patient text and image data available at any clinical workstation to any authorized user anywhere within the network of medical centres. Clinical requirements for an imaging workstation include ease of use, rapid and reliable access to the complete set of patient information, and images which are of acceptable quality to meet the requirements of the user and the subspecialty. Patient confidentiality and data security must be safeguarded at all times. Integration of the images with the remainder of the patient's database was found to be critical to the success of the project. The experience at the Washington and Maryland facilities suggests that an imaging system that is successfully integrated with a hospital information system can provide substantial clinical and economic benefits both within and among medical centres. Clinical acceptance and utilization of the system has been excellent, particularly in diagnostic radiology where DHCP Imaging has been interfaced to a commercial PAC system. Based upon this initial experience, the VA has begun to deploy the system throughout its large network of medical centres.     

Myocardial elastography at both high temporal and spatial resolution for the detection of infarcts

Myocardial elastography is a novel method for noninvasively assessing regional myocardial function, with the advantages of high spatial and temporal resolution and high signal-to-noise ratio (SNR). In this paper, in-vivo experiments were performed in anesthetized normal and infarcted mice (one day after left anterior descending coronary artery [LAD] ligation) using a high-resolution (30 MHz) ultrasound system (Vevo 770, VisualSonics Inc., Toronto, ON, Canada). Radiofrequency (RF) signals of the left ventricle (LV) in longitudinal (long-axis) view and the associated electrocardiogram (ECG) were simultaneously acquired. Using a retrospective ECG gating technique, 2-D full field-of-view RF frames were acquired at an extremely high frame rate (8 kHz) that resulted in high-quality incremental displacement and strain estimation of the myocardium. The incremental results were further accumulated to obtain the cumulative displacements and strains. Two-dimensional and M-mode displacement images and strain images (elastograms), as well as displacement and strain profiles as a function of time, were compared between normal and infarcted mice. Incremental results clearly depicted cardiac events including LV contraction, LV relaxation and isovolumetric phases in both normal and infarcted mice, and also evidently indicated reduced motion and deformation in the infarcted myocardium. The elastograms indicated that the infarcted regions underwent thinning during systole rather than thickening, as in the normal case. The cumulative elastograms were found to have higher elastographic SNR (SNR(e)) than the incremental elastograms (e.g., 10.6 vs. 4.7 in a normal myocardium, and 6.0 vs. 2.4 in an infarcted myocardium). Finally, preliminary statistical results from nine normal (m = 9) and seven infarcted (n = 7) mice indicated the capability of the cumulative strain in differentiating infracted from normal myocardia. In conclusion, myocardial elastography could provide regional strain information at simultaneously high temporal (>/=0.125 ms) and spatial ( approximately 55 microm) resolution as well as high precision ( approximately 0.05 microm displacement). This technique was thus capable of accurately characterizing normal myocardial function throughout an entire cardiac cycle, at the same high resolution, and detecting and localizing myocardial infarction in vivo.     

手转胎头术失败的原因与分娩结局临床分析

目的 探讨手转胎头术失败的原因与分娩结局.方法 选择2008年1月至2010年12月于我院住院分娩的持续性枕横位、枕后位产妇198例,根据行手转胎头术后结果分为成功组126例、失败组72例.比较两组分娩结局,对比分析失败原因.结果 失败组胎儿体质量≥3500 g的发生率[76.4％(55/72)]明显高于成功组[31.7％(40/126)],差异有统计学意义(x2=30.177,P=0.001)、失败组宫缩乏力发生率[58.3％(42/72)]高于成功组[38.1％ (48/126)],差异有统计学意义(x2=7.569,P=0.006)、失败组骨盆临界或轻度狭窄发生率[38.9％ (28/72)]高于成功组[23.8％(30/126)],差异有统计学意义(x2 =5.030,P=0.002)、失败组手转胎头时机不当(宫口开大＜6 cm、胎头位于坐骨棘上及宫口开大8～10 cm、胎头位于坐骨棘下≥2 cm)发生率[61.1％(44/72)]高于成功组[38.9％(49/126)],差异有统计学意义(x2=9.084,P=0.003).失败组母儿并发症(产后出血、产褥病率、胎儿窘迫、新生儿窒息)发生率高于成功组(x2 =9.586,P=0.002、x2=9.334,P=0.002、x2=5.910,P=0.015、x2=5.240,P=0.022)、失败组剖宫产发生率[72.2％(52/72)]明显高于成功组[34.1 ％(43/126),x2=26.641,P=0.001)].结论 手转胎头术能使难产变顺产,降低剖宫产率,减少母儿并发症,但须积极预防、处理导致手转胎头术失败的原因,对矫正失败后继续矫正及试产应慎重.