血小板特异性抗体对特发性血小板减少性紫癜诊断价值的研究

目的:检测特发性血小板减少性紫癜及非免疫性血小板减少症患者抗血小板特异性抗体与血小板相关抗体,评价其在特发性血小板减少性紫癜中的诊断价值。方法:用流式细胞仪检测血小板相关抗体PAIgG,PAIgA,PAIgM;用改良单克隆抗体特异性俘获血小板抗原技术检测抗血小板膜糖蛋白(GPⅡb/Ⅲa,GPⅠb/Ⅸ)特异性自身抗体。结果:血小板相关抗体在特发性血小板减少性紫癜组敏感度为80%,在非免疫性血小板减少症组为63.3%。改良单克隆抗体特异性俘获血小板抗原法检测抗GPⅡb/Ⅲa和GPⅠb/Ⅸ抗体,在特发性血小板减少性紫癜组中的敏感度分别为53.3%和30%;在非免疫性血小板减少症组中除1例GPⅠb/Ⅸ阳性外,其余均为阴性;2组检出率比较差异有统计学意义(P<0.05)。结论:血小板相关抗体敏感度较高,但特异度较低;抗血小板特异性抗体敏感度虽较低,但特异性较高,可鉴别特发性血小板减少性紫癜和非免疫性血小板减少症。可作为特发性血小板减少性紫癜的特异性诊断指标。     

南宁地区成人及儿童ITP患者体内血小板自身抗体特异性分布的研究

目的：研究血小板膜糖蛋白特异性自身抗体在成人及儿童原发免疫性血小板减少症（ITP）患者中分布的异同。方法应用酶联免疫吸附试验（PAKAUTO 试剂盒）检测 ITP 组（83例）及非 ITP 组（58例）患者血小板自身抗体,并分析成人组ITP（46例）,儿童组 ITP（37例）的抗 GP Ⅱ b／Ⅲ a 、抗 GP Ⅰ b／Ⅸ及抗 GP Ⅰ a／Ⅱ a 自身抗体特异性分布规律。结果 ITP 组血小板自身抗体阳性率为66．27％,高于非 ITP 组的6．90％,差异有统计学意义差异有统计学意义（P＜0．05）。成人组女性 ITP 患者占60．87％,儿童组女性 ITP 患儿占64．86％,差异无统计学意义（P ＞0．05）,但两组女性发病率均高于男性,差异有统计学意义（P＜0．05）。成人组 ITP 患者血小板自身抗体阳性率为63．04％,儿童组 ITP 患儿抗体阳性率为70．27％,差异无统计学意义（P＞0．05）;且成人组与儿童组 ITP 患者血小板自身抗体特异性分布差异无统计学意义（P ＞0．05）,均以抗 GP Ⅱ b／Ⅲ a 和抗 GPⅠ b／Ⅸ抗体多见。结论血小板自身抗体检测对 ITP 诊断、鉴别诊断及治疗均有重要的参考价值,GP Ⅰ a／Ⅱ a 抗体介导的 ITP很值得深入研究。     

前瞻性评价单克隆抗体俘获血小板抗原技术对免疫性血小板减少症的诊断价值

目的 评价单克隆抗体俘获血小板抗原技术(MAIPA)对免疫性血小板减少症(ITP)的诊断价值,以及对免疫性和非免疫性血小板减少的鉴别诊断价值.方法 以来自14家医院的321例血小板减少患者为研究对象,男118例,女203例,应用改良MAIPA试验双盲法检测患者血小板膜糖蛋白特异性自身抗体(抗-GPⅡb/Ⅲa和抗-GP Ⅰ b/Ⅸ),客观评价该试验在ITP诊断中的敏感性和特异性,了解ITP患者血小板特异性抗体浓度与血小板数量的相关性以及地塞米松治疗后抗体浓度的变化.结果 抗-GPⅡb/Ⅲa、抗-GP Ⅰ b/Ⅸ、抗-GPⅡb/Ⅲa联合抗-GP Ⅰ b/Ⅸ诊断ITP的敏感性分别为39.75%、32.64%、55.23%,特异性分别为97.56%、93.94%、92.68%,阳性预测值分别为97.94%、93.98%、95.65%,阴性预测值分别为35.71%、32.35%、41.53%,总有效率分别为54.51%、48.29%、64.80%;ITP患者血小板特异性抗体阳性率显著高于非免疫性血小板减少患者;抗体阳性患者的血小板数量显著低于阴性患者,ITP患者血小板特异性抗体水平[吸光度(A)值]与血小板数量呈负相关;激素治疗有效的ITP患者抗-GPⅡb/Ⅲa或(和)抗-GP Ⅰ b/Ⅸ转阴或抗体水平降低.结论 MAIPA试验对ITP具有较高的诊断价值,对ITP患者的疗效也具有指导意义,可作为IFP和非免疫性血小板减少的鉴别诊断依据.     

直接MAIPA对免疫性和非免疫性血小板减少性紫癜的鉴别诊断

目的检测免疫性与非免疫性血小板减少患者血小板膜糖蛋白特异性自身抗体，评价该方法在免疫性和非免疫性血小板减少性紫癜鉴别诊断中的价值。方法应用改良直接单克隆抗体俘获血小板抗原技术(MAIPA)检测血小板膜糖蛋白(GPⅡh／Ⅲa、GP I b和GPI a／Ⅱa)特异性自身抗体。结果免疫性血小板减少患者自身抗体阳性率(76．4％)显著高于非免疫性血小板减少患者(3．6％)(P＜0．05)。直接MAIPA诊断免疫性血小板减少的敏感性为76．4％，特异性为96．4％，阳性预测值为97．1％。GPⅡh／Ⅲa特异性自身抗体阳性的免疫性血小板减少患者血小板计数与自身抗体吸光度比值呈显著负相关(r=-0．338，P＜0．05)。结论直接MAIPA检测血小板膜糖蛋白特异性自身抗体对于鉴别免疫性与非免疫性血小板减少有一定意义。     

流式免疫微球芯片技术分析特异性血小板自身抗体

目的建立流式免疫微球芯片技术（FCIBA）分析特异性血小板自身抗体的新方法。方法使用不同红色荧光强度的微球，包被不同血小板膜蛋白单克隆抗体（抗GPⅡb／Ⅲa、抗GPⅠa／Ⅱa、抗GPⅣ、抗GPⅠb／Ⅸ和抗HLA-ABC单克隆抗体），制备特异性血小板自身抗体检测微球，用流式细胞仪检测微球捕获的血小板抗原-自身抗体复合物，检测结果与微孔板改进抗原捕获ELISA（MACE）进行比较，并检测了部分免疫性以及非免疫性血小板减少性紫癜患者血清中的5种特异性血小板自身抗体。结果FCIBA分析抗GPⅡb／Ⅲa、抗GPⅠa／Ⅱa、抗GPⅣ、抗GPⅠb／Ⅸ和抗HLA-ABC5种特异性血小板自身抗体，批内重复性变异系数（CV）分别为4．82％、6．09％、5．04％、5．73％、5．30％；稀释试验呈对数线性相关，相关系数（r）分别为0．9972．0．9966．0．9988．0．9965、0．9982；新方法对5种特异性血小板自身抗体的分析结果均与MACE试验结果高度相关，r值分别为0．9289、0．9224、0．8894、0．9100、0．9134（P均〈0．01）。新方法分析98例免疫性血小板减少性紫癜患者的血清样本，血小板特异性自身抗体检出的阳性率为51．69％；其中，抗GPⅡb／Ⅲa为40．82％，抗GPⅠa／，Ⅱa为24．45％，抗GPⅣ为19．39％，抗GPⅠb／Ⅸ为32．65％，抗HLA-ABC为17．35％。新方法分析40例非免疫性血小板减少性紫癜患者的血清样本，阳性率为0。结论本研究建立了FCIBA分析特异性血小板自身抗体的新方法，可同时分析抗血小板GPⅡb／Ⅲa、GPⅠa／，Ⅱa、GPⅣ、GPⅠb／Ⅸ和HLA-ABC5种特异性血小板自身抗体。     

血小板特异性抗体联合检测在免疫性血小板减少症鉴别诊断中的价值

目的通过检测血小板减少症患者外周血B淋巴细胞血小板膜糖蛋白特异性抗体的变化,探讨其表达水平变化对血小板减少症鉴别诊断的临床意义。方法应用流式微球技术检测血小板减少症患者及健康对照者外周血GPⅡb/Ⅲa、GPⅠb/ⅠX的表达水平。结果原发ITP与继发ITP患者血小板特异性抗体GPⅡb/Ⅲa、GPⅠb/ⅠX与对照组比较差异有统计学意义(P0.05);血小板特异性抗体GPⅠb/ⅠX诊断原发ITP的敏感度43%,特异度89%;GPⅡb/Ⅲa诊断原发ITP的敏感度86%,特异度83%。两者联合诊断敏感度90%,特异度83%。结论联合检测两种血小板抗体,提高原发ITP和SLE的诊断阳性率;GPⅠb/ⅠX在ITP中的诊断优势不如GPⅡb/Ⅲa。     

血小板相关抗体在维吾尔族免疫性血小板减少性紫癜诊断中的应用价值分析

目的探究血小板相关抗体在维吾尔族免疫性血小板减少性紫癜(ITP)诊断中的应用价值。方法选取该院40例确诊为ITP患者作为免疫组,同期选取30例非免疫性血小板减少性紫癜患者为非免疫组,20例体检健康者作为对照组,入组人群均为维吾尔族。观察比较各组人群血清中血小板相关抗体(PAIgA、PAIgM、PAIgG)水平及血小板特异性抗体(GPⅡb/Ⅲa、GPⅠb/Ⅸ)水平,并分析ITP患者各类血小板抗体水平与血小板水平的关系。结果非免疫组患者血小板相关抗体(PAIgA、PAIgM、PAIgG)及血小板特异性抗体(GPⅡb/Ⅲa、GPⅠb/Ⅸ)水平高于对照组;免疫组患者血小板相关抗体(PAIgA、PAIgM、PAIgG)及血小板特异性抗体(GPⅡb/Ⅲa、GPⅠb/Ⅸ)水平高于非免疫组,差异有统计学意义(P<0.05)。不同血小板水平ITP患者血小板相关抗体(PAIgA、PAIgM、PAIgG)水平差异无统计学意义(P>0.05),血小板特异性抗体(GPⅡb/Ⅲa、GPⅠb/Ⅸ)水平随血小板水平的降低而升高,且血小板计数与GPⅡb/Ⅲa、GPⅠb/Ⅸ水平呈负相关关系(r=-0.282、-0.331,均P<0.05)。结论血小板抗体在ITP诊断和鉴别诊断中具有重要意义,其中,GPⅡb/Ⅲa、GPⅠb/Ⅸ水平还可作为评估疗效及预后的重要指标。     

自身免疫性血小板减少性紫癜相关抗体的研究

目的　探索对自身免疫性血小板减少性紫癜 (AITP)诊断特异和敏感的实验方法。方法　采用单克隆抗体特异性俘获血小板抗原技术 (MAIPA技术 )并加以改进 ,对比检测血小板洗脱液和血浆中血小板膜糖蛋白特异性抗体。结果　AITP患者血浆游离抗血小板膜糖蛋白 (GPⅡb Ⅲa、GPⅠb Ⅸ )抗体总阳性率为 38.89%(5 4例中 2 1例 ) ,洗脱血小板表面抗血小板膜糖蛋白 (GPⅡb Ⅲa、GPⅠb Ⅸ )抗体总阳性率为 6 8.5 2 %(5 4例中 37例 ) ,两者差异有显著性 (校正 χ2 =19.39,P <0 .0 0 5 )。原发AITP组血浆游离及洗脱血小板表面抗血小板糖蛋白 (GPⅡb Ⅲa、GPⅠb Ⅸ )特异性抗体总阳性率与继发性AITP组比较差异无显著性。AITP患者血小板数量与自身抗体滴度呈明显负相关。结论　MAIPA法检测血小板洗脱液中抗血小板糖蛋白抗体在AITP的诊断和治疗中具有高度特异性 ,且敏感性较血浆抗体检测显著提高。     

分泌GPⅡb/Ⅲa抗体B细胞及血小板特异性抗体检测在特发性血小板减少性紫癜诊断中的意义

目的 检测特发性血小板减少性紫癜(ITP)患者及非免疫性血小板减少患者分泌GPⅡb/Ⅲa抗体B细胞、血小板特异性抗体的变化,评价其对诊断ITP及非免疫性血小板减少疾病的作用及临床意义.方法 应用酶联免疫斑点技术(ELISPOT)及改良血小板抗原单克隆抗体固相化检测技术(MAIPA)分别检测58例ITP患者、33例非免疫性血小板减少患者及31名正常对照者分泌GPⅡb/Ⅲa抗体B细胞频数、血小板特异性抗体(抗GPⅡb/Ⅲa抗体)表达的变化.结果 ITP患者分泌GPⅡb/Ⅲa抗体B细胞频数[(6.6±4.2)/105个外周血单个核细胞(PBMNC)]明显高于非免疫性血小板减少患者[(2.2±2.0)/105个PBMNC](P＜0.05)及正常对照组[(1.3±0.5)/105个PBMNC](P＜0.05),而分泌GPⅡb/Ⅲa抗体B细胞频数在非免疫性血小板减少患者及正常对照组间的差异无统计学意义(P＞0.05).通过ELISPOT法检测分泌GPⅡb/Ⅲa抗体B细胞对ITP诊断的敏感性为70.69%,特异性为90.91%,高于改良MAIPA法的敏感性(χ2=7.03,P＜0.05).根据ROC曲线,ELISPOT区分ITP患者和非免疫性血小板减少患者的鉴别效度为0.886.结论 通过检测分泌GPⅡ/bⅢa抗体B细胞及血小板特异性抗体能够较好地反映ITP的发病机制.应用ELISPOT方法检测ITP患者分泌GPⅡb/Ⅲa抗体B细胞具有较高敏感性及特异性,可提高ITP的实验窒诊断水平,对指导治疗有一定的临床意义.     

特发性血小板减少性紫癜患者脾脏CD5+和CD5-B细胞共同参与血小板自身抗体的产生

目的：研究慢性特发性血小板减少性紫癜（ITP）患者脾脏CD5^ B细胞水平的变化及CD5^ 和CD5^-B细胞与血小板膜糖蛋白（GP）特异性自身抗体产生的关系，以识别致病B细胞亚群。方法：应用双色流式细胞仪检测8例慢性ITP患者脾脏CD5^ B细胞水平。选择4例血浆抗GPⅡb/Ⅲa和抗GP Ⅰb/Ⅸ抗体双阳性ITP切脾患者，应用Ficoll密度梯度离心及花环形成分离法分离脾脏B淋巴细胞，继而采用镝产珠分选法分选、纯化CD5^ B细胞和CD5^-B细胞，并分别进行体外培养，应用改良MAIPA法检测血浆和细胞培养上清液的血小板特异性抗体。结果：ITP患者脾脏CD5^ B细胞水平圈晨自身免疫性疾病患者略有增高，二者之间差异无统计学意义。CD5^ B细胞水平与患者血小板计数无相关性。4例血浆抗GPⅡb/Ⅲa抗体和抗GPⅠb/Ⅸ抗体双阳性。另外1例CD5^ B细胞培养液抗GPⅡb/Ⅲa抗体阴性，抗GPⅠb/Ⅸ抗体阳性;CD5^-B细胞培养液抗GPⅡb/Ⅲa抗体和抗GPⅠb/Ⅸ抗体双阳性。结论：脾脏CD5^ 和CD5^-B细胞 均可产生血小板GP特异性自身抗体，抗体产生种类和滴度无明显差异。提示二者共同参与了ITP的发病过程。     

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.