首页 > 最新文献

ISRN obstetrics and gynecology最新文献

英文 中文
Triggering risk factors of the burnout syndrome in OB/GYN physicians from a reference public university of Brazil. 巴西一所参考公立大学妇产科医生职业倦怠综合征的触发危险因素
Pub Date : 2012-01-01 Epub Date: 2012-12-06 DOI: 10.5402/2012/593876
Fátima Ferreira Bortoletti, Ana Maria Teresa Benevides-Pereira, Esdras Guerreiro Vasconcellos, José Oliveira Siqueira, Edward Araujo Júnior, Luciano Marcondes Machado Nardozza, Ricardo Werner Sebastiani, Antonio Fernandes Moron

Objective. To identify the risk factors to the development of Burnout Syndrome in Ob/Gyn Brazilian physicians in four dimensions: emotional exhaustion (EE), professional repression (PR), dehumanization (De), and emotional distancing (EmD). Methods. A prospective cross-sectional study was realized with 48 Ob/Gyn physicians (12 lecturers, 12 attending physicians, 12 medical residents, and 12 graduate students) from Department of Obstetrics, São Paulo Federal University (UNIFESP). We used a sociodemographic questionnaire focusing on the activities (administrative, educational, healthcare, and research). We applied a Burnout Syndrome Inventory (BSI) composed of two parts: triggering factors (ISB1) and the Burnout Syndrome (ISB2). The ISB1 is composed of two scales: positive organizational conditions (POC) and negative organizational conditions (NOC). The ISB2 is composed of four scales: EE, PR, De, and EmD. Results. We observed a rate below and above average to POC and NOC, respectively. The dimensions recorded a level above average to EE, an index at the upper limit of the average to De, a median index to EmD, and a median index to PR. Conclusions. The Ob/Gyn physicians are in an area of vulnerability for the development of Burnout Syndrome due to the high level of EE and De, associated with a median index of PR. The high rate of NOC contributes to the triggering of this scenery.

目标。从情绪耗竭(EE)、职业压抑(PR)、非人化(De)和情感疏离(EmD)四个维度确定巴西妇产科医生发生职业倦怠综合征的危险因素。方法。对来自圣保罗联邦大学(UNIFESP)产科的48名妇产科医生(12名讲师、12名主治医生、12名住院医生和12名研究生)进行前瞻性横断面研究。我们使用社会人口调查问卷关注活动(行政、教育、医疗保健和研究)。本研究采用了倦怠综合征量表(BSI),该量表由触发因素(ISB1)和倦怠综合征(ISB2)两部分组成。ISB1由两个量表组成:积极组织条件(POC)和消极组织条件(NOC)。ISB2由EE、PR、De和EmD四个量表组成。结果。我们观察到POC和NOC的比率分别低于和高于平均水平。这些维度记录了EE的平均水平高于平均值,De的平均上限指数,EmD的中位数指数和PR的中位数指数。由于高水平的EE和De(与PR的中位数指数相关),妇产科医生处于易患倦怠综合征的区域。高比率的NOC有助于触发这种情况。
{"title":"Triggering risk factors of the burnout syndrome in OB/GYN physicians from a reference public university of Brazil.","authors":"Fátima Ferreira Bortoletti,&nbsp;Ana Maria Teresa Benevides-Pereira,&nbsp;Esdras Guerreiro Vasconcellos,&nbsp;José Oliveira Siqueira,&nbsp;Edward Araujo Júnior,&nbsp;Luciano Marcondes Machado Nardozza,&nbsp;Ricardo Werner Sebastiani,&nbsp;Antonio Fernandes Moron","doi":"10.5402/2012/593876","DOIUrl":"https://doi.org/10.5402/2012/593876","url":null,"abstract":"<p><p>Objective. To identify the risk factors to the development of Burnout Syndrome in Ob/Gyn Brazilian physicians in four dimensions: emotional exhaustion (EE), professional repression (PR), dehumanization (De), and emotional distancing (EmD). Methods. A prospective cross-sectional study was realized with 48 Ob/Gyn physicians (12 lecturers, 12 attending physicians, 12 medical residents, and 12 graduate students) from Department of Obstetrics, São Paulo Federal University (UNIFESP). We used a sociodemographic questionnaire focusing on the activities (administrative, educational, healthcare, and research). We applied a Burnout Syndrome Inventory (BSI) composed of two parts: triggering factors (ISB1) and the Burnout Syndrome (ISB2). The ISB1 is composed of two scales: positive organizational conditions (POC) and negative organizational conditions (NOC). The ISB2 is composed of four scales: EE, PR, De, and EmD. Results. We observed a rate below and above average to POC and NOC, respectively. The dimensions recorded a level above average to EE, an index at the upper limit of the average to De, a median index to EmD, and a median index to PR. Conclusions. The Ob/Gyn physicians are in an area of vulnerability for the development of Burnout Syndrome due to the high level of EE and De, associated with a median index of PR. The high rate of NOC contributes to the triggering of this scenery.</p>","PeriodicalId":73520,"journal":{"name":"ISRN obstetrics and gynecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/593876","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31151837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
The Diagnostic Properties of Medical History in the Diagnosis of Tubal Pathology among Subfertile Patients. 病史在不孕患者输卵管病理诊断中的诊断价值。
Pub Date : 2012-01-01 Epub Date: 2012-01-22 DOI: 10.5402/2012/436930
Egle Tvarijonaviciene, Ruta Jolanta Nadisauskiene, Kristina Jariene, Valdemaras Kruminis

Objectives. To evaluate the diagnostic performance of medical history in the diagnosis of tubal pathology among subfertile patients. Patients and Methods. Prospective cross-sectional study was performed. Prior to tubal evaluation, medical history data were collected. Sensitivity, specificity, and likelihood ratios (LRs) for predicting tubal pathology as determined by laparoscopy and dye test were calculated for each issue of medical history. Results. 39.6 % (59/149) were diagnosed with tubal pathology. The sensitivity for the different issues ranged between 1.7 and 54.2% and the specificity between 75.6 and 97.8%. The estimated highest value of positive LR is attributed to the history of ectopic pregnancy and lowest of negative LR to pelvic inflammatory disease (PID) and abdominal surgery. Conclusion. The positive history of PID, sexually transmitted diseases (STDs), abdominal and laparoscopic surgery, and ectopic pregnancy are satisfactory screening tests for ruling the tubal pathology in. The negative history of evaluated issues is inappropriate for ruling the tubal damage out.

目标。目的:探讨病史在不孕患者输卵管病理诊断中的价值。患者和方法。进行前瞻性横断面研究。在输卵管评估之前,收集病史资料。通过腹腔镜检查和染色试验预测输卵管病理的敏感性、特异性和似然比(LRs)对每个问题的病史进行计算。结果:39.6%(59/149)确诊为输卵管病变。不同问题的敏感性在1.7 ~ 54.2%之间,特异性在75.6 ~ 97.8%之间。估计LR阳性的最高值归因于异位妊娠史,而LR阴性的最低值归因于盆腔炎(PID)和腹部手术。结论。盆腔炎、性传播疾病(std)、腹部和腹腔镜手术、异位妊娠的阳性病史是判定输卵管病理的满意筛查试验。评估问题的阴性病史不适合排除输卵管损伤。
{"title":"The Diagnostic Properties of Medical History in the Diagnosis of Tubal Pathology among Subfertile Patients.","authors":"Egle Tvarijonaviciene,&nbsp;Ruta Jolanta Nadisauskiene,&nbsp;Kristina Jariene,&nbsp;Valdemaras Kruminis","doi":"10.5402/2012/436930","DOIUrl":"https://doi.org/10.5402/2012/436930","url":null,"abstract":"<p><p>Objectives. To evaluate the diagnostic performance of medical history in the diagnosis of tubal pathology among subfertile patients. Patients and Methods. Prospective cross-sectional study was performed. Prior to tubal evaluation, medical history data were collected. Sensitivity, specificity, and likelihood ratios (LRs) for predicting tubal pathology as determined by laparoscopy and dye test were calculated for each issue of medical history. Results. 39.6 % (59/149) were diagnosed with tubal pathology. The sensitivity for the different issues ranged between 1.7 and 54.2% and the specificity between 75.6 and 97.8%. The estimated highest value of positive LR is attributed to the history of ectopic pregnancy and lowest of negative LR to pelvic inflammatory disease (PID) and abdominal surgery. Conclusion. The positive history of PID, sexually transmitted diseases (STDs), abdominal and laparoscopic surgery, and ectopic pregnancy are satisfactory screening tests for ruling the tubal pathology in. The negative history of evaluated issues is inappropriate for ruling the tubal damage out.</p>","PeriodicalId":73520,"journal":{"name":"ISRN obstetrics and gynecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/436930","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30541592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A Review of Outcome Data concerning Children Born following Assisted Reproductive Technologies. 辅助生殖技术后出生儿童的结局数据综述。
Pub Date : 2012-01-01 Epub Date: 2012-06-17 DOI: 10.5402/2012/405382
Charlotte Dupont, Christophe Sifer

Assisted reproductive technologies (ARTS) are used for more than 30 years to help infertile couples. Concerns about long-term health of children conceived following ART have led to start follow-up studies. Despite methodological limitations and discrepant results, many of the studies and meta-analyses have reported an increased risk of birth defects after ART. Etiologies may be multiple births, a major drawback of ART, parents' subfertility, or technologies themselves. Prematurity and intrauterine growth retardation (IUGR) seem to cause most of the pathologies reported in ART children. Nevertheless, epigenetic disorders need to be followed up since increases of imprinting diseases were reported. Consequently, alteration of gametes and early embryo development with ART may have consequences on children health since periconceptional period is critical for long-term development. Yet general condition of most of children conceived with ART is reassuring, but long-term followup is still strongly needed.

辅助生殖技术用于帮助不育夫妇已有30多年的历史。对抗逆转录病毒治疗后怀孕儿童的长期健康的担忧已导致开展后续研究。尽管有方法学上的局限性和差异的结果,许多研究和荟萃分析都报告了抗逆转录病毒治疗后出生缺陷的风险增加。病因可能是多胎、抗逆转录病毒技术的一个主要缺陷、父母生育能力低下或技术本身。早产和宫内生长迟缓(IUGR)似乎是ART儿童报告的大多数病理的原因。然而,由于印迹疾病的增加,表观遗传疾病需要跟进。因此,通过抗逆转录病毒治疗改变配子和早期胚胎发育可能对儿童健康产生影响,因为围孕期对长期发育至关重要。然而,大多数接受抗逆转录病毒治疗的儿童的总体情况是令人放心的,但仍需要长期随访。
{"title":"A Review of Outcome Data concerning Children Born following Assisted Reproductive Technologies.","authors":"Charlotte Dupont,&nbsp;Christophe Sifer","doi":"10.5402/2012/405382","DOIUrl":"https://doi.org/10.5402/2012/405382","url":null,"abstract":"<p><p>Assisted reproductive technologies (ARTS) are used for more than 30 years to help infertile couples. Concerns about long-term health of children conceived following ART have led to start follow-up studies. Despite methodological limitations and discrepant results, many of the studies and meta-analyses have reported an increased risk of birth defects after ART. Etiologies may be multiple births, a major drawback of ART, parents' subfertility, or technologies themselves. Prematurity and intrauterine growth retardation (IUGR) seem to cause most of the pathologies reported in ART children. Nevertheless, epigenetic disorders need to be followed up since increases of imprinting diseases were reported. Consequently, alteration of gametes and early embryo development with ART may have consequences on children health since periconceptional period is critical for long-term development. Yet general condition of most of children conceived with ART is reassuring, but long-term followup is still strongly needed.</p>","PeriodicalId":73520,"journal":{"name":"ISRN obstetrics and gynecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/405382","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30750973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
Results of second-look laparotomy in advanced ovarian cancer: one single center experience. 晚期卵巢癌复诊剖腹手术的结果:单中心经验。
Pub Date : 2012-01-01 Epub Date: 2012-10-16 DOI: 10.5402/2012/849518
Tarak Damak, Riadh Chargui, Jamel Ben Hassouna, Monia Hechiche, Khaled Rahal

Objective. The goal of the study was to analyse the results of 85 cases of second-look laparotomy (SLL) and explore the influence of this procedure on survival. Patients and Methods. We reviewed retrospectively 85 cases of SLL collected and treated in our institute between 1994 and 2003. Results. Complete pathologic response (CPR) was 25.8%, microscopic disease (Rmicro) was 38.8%, and macroscopic disease (Rmacro) was 35.4%. In patients with negative SLL results, disease recurrence was diagnosed in 41%. The 3- and 5-year overall survival rates for the entire population were 91% and 87%, respectively. The 3- and 5-year disease-free survivals were, respectively, 76.3% and 58.5% in negative SLL versus 55.7% and 16% in positive SLL. The difference between the group of patients with complete response (76%) and the patients with residual microscopic disease (72%) was not significant. The tumoral residuum after initial surgery was the only prognostic factor influencing significantly the disease-free survival. On Cox regression model analysis, only initial tumoral residuum (P = 0.04) and tumoral residuum after SLL (P = 0.02) were independent prognostic factors for survival. Conclusions. The most important advantage of SLL is the early detection of recurrence and thus the early administration of consolidation treatment resulting in a better prognosis.

目标。本研究的目的是分析85例二次剖腹手术(SLL)的结果,并探讨该手术对生存的影响。患者和方法。我们回顾了1994年至2003年在我院收集和治疗的85例SLL病例。结果。完全病理反应(CPR)为25.8%,显微病变(Rmicro)为38.8%,宏观病变(Rmacro)为35.4%。在SLL结果阴性的患者中,41%的患者被诊断为疾病复发。整个人群的3年和5年生存率分别为91%和87%。SLL阴性组3年和5年无病生存率分别为76.3%和58.5%,而SLL阳性组为55.7%和16%。完全缓解组(76%)与残留显微病变组(72%)的差异无统计学意义。初次手术后肿瘤残留是唯一影响无病生存的预后因素。在Cox回归模型分析中,只有初始肿瘤残留(P = 0.04)和SLL后肿瘤残留(P = 0.02)是生存的独立预后因素。结论。SLL最重要的优势是早期发现复发,因此早期给予巩固治疗,预后较好。
{"title":"Results of second-look laparotomy in advanced ovarian cancer: one single center experience.","authors":"Tarak Damak,&nbsp;Riadh Chargui,&nbsp;Jamel Ben Hassouna,&nbsp;Monia Hechiche,&nbsp;Khaled Rahal","doi":"10.5402/2012/849518","DOIUrl":"https://doi.org/10.5402/2012/849518","url":null,"abstract":"<p><p>Objective. The goal of the study was to analyse the results of 85 cases of second-look laparotomy (SLL) and explore the influence of this procedure on survival. Patients and Methods. We reviewed retrospectively 85 cases of SLL collected and treated in our institute between 1994 and 2003. Results. Complete pathologic response (CPR) was 25.8%, microscopic disease (Rmicro) was 38.8%, and macroscopic disease (Rmacro) was 35.4%. In patients with negative SLL results, disease recurrence was diagnosed in 41%. The 3- and 5-year overall survival rates for the entire population were 91% and 87%, respectively. The 3- and 5-year disease-free survivals were, respectively, 76.3% and 58.5% in negative SLL versus 55.7% and 16% in positive SLL. The difference between the group of patients with complete response (76%) and the patients with residual microscopic disease (72%) was not significant. The tumoral residuum after initial surgery was the only prognostic factor influencing significantly the disease-free survival. On Cox regression model analysis, only initial tumoral residuum (P = 0.04) and tumoral residuum after SLL (P = 0.02) were independent prognostic factors for survival. Conclusions. The most important advantage of SLL is the early detection of recurrence and thus the early administration of consolidation treatment resulting in a better prognosis.</p>","PeriodicalId":73520,"journal":{"name":"ISRN obstetrics and gynecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/849518","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31022338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Routine use of color Doppler in fetal heart scanning in a low-risk population. 彩色多普勒在低危人群胎儿心脏扫描中的常规应用。
Pub Date : 2012-01-01 Epub Date: 2012-05-20 DOI: 10.5402/2012/496935
Torbjørn Moe Eggebø, Claudia Heien, Magne Berget, Christian Lycke Ellingsen

Objectives. To investigate the detection rate of major fetal heart defects in a low-risk population implementing routine use of color Doppler. Material and Methods. In a prospective observational study, all women undergoing fetal heart scanning (including 6781 routine examinations in the second trimester) during a three-year period were included. First a gray-scale scanning was performed including assessment of the four-chamber view and the great vessels. Thereafter three cross-sectional planes through the fetal thorax were assessed with color Doppler. Results. Thirty-nine fetuses had major heart defects, and 26 (67%) were prenatally detected. In 9/26 (35%) of cases the main ultrasound finding was related to the use of color Doppler. The survival rate of live born children was 91%. Conclusions. Routine use of color Doppler in fetal heart scanning in a low-risk population may be helpful in the detection of major heart defects; however, still severe malformations were missed prenatally.

目标。目的探讨常规彩色多普勒对低危人群重大胎儿心脏缺陷的检出率。材料和方法。在一项前瞻性观察性研究中,所有在三年期间接受胎儿心脏扫描(包括6781例妊娠中期常规检查)的妇女被纳入研究对象。首先进行灰度扫描,包括评估四室视图和大血管。然后用彩色多普勒评估胎儿胸部的三个横切面。结果。39例胎儿有严重心脏缺陷,26例(67%)在产前被发现。9/26(35%)病例的主要超声发现与彩色多普勒的使用有关。活产儿童的存活率为91%。结论。在低危人群中常规使用彩色多普勒胎儿心脏扫描可能有助于发现主要心脏缺陷;然而,仍有严重的胎儿畸形未被发现。
{"title":"Routine use of color Doppler in fetal heart scanning in a low-risk population.","authors":"Torbjørn Moe Eggebø,&nbsp;Claudia Heien,&nbsp;Magne Berget,&nbsp;Christian Lycke Ellingsen","doi":"10.5402/2012/496935","DOIUrl":"https://doi.org/10.5402/2012/496935","url":null,"abstract":"<p><p>Objectives. To investigate the detection rate of major fetal heart defects in a low-risk population implementing routine use of color Doppler. Material and Methods. In a prospective observational study, all women undergoing fetal heart scanning (including 6781 routine examinations in the second trimester) during a three-year period were included. First a gray-scale scanning was performed including assessment of the four-chamber view and the great vessels. Thereafter three cross-sectional planes through the fetal thorax were assessed with color Doppler. Results. Thirty-nine fetuses had major heart defects, and 26 (67%) were prenatally detected. In 9/26 (35%) of cases the main ultrasound finding was related to the use of color Doppler. The survival rate of live born children was 91%. Conclusions. Routine use of color Doppler in fetal heart scanning in a low-risk population may be helpful in the detection of major heart defects; however, still severe malformations were missed prenatally.</p>","PeriodicalId":73520,"journal":{"name":"ISRN obstetrics and gynecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/496935","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30680631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6-9 weeks' Gestation. 根据体外受精日期估计妊娠6-9周胎龄的超声参考图。
Pub Date : 2012-01-01 Epub Date: 2012-07-22 DOI: 10.5402/2012/938583
Pavitra Delpachitra, Kirsten Palmer, Joseph Onwude, Simon Meagher, Luk Rombauts, Karen Waalwyk, Michael Bethune, Stephen Tong

Accurate determination of gestational age underpins good obstetric care. We assessed the performance of six existing ultrasound reference charts to determine gestational age in 1268 singleton IVF pregnancies, where "true" gestational age could be precisely calculated from date of fertilisation. All charts generated dates significantly different to IVF dates (P < 0.0001 all comparisons). Thus we generated a new reference chart, The Monash Chart, based on a line of best fit describing crown-rump length across 6 + 1 to 9 + 0 weeks of gestation (true gestational age) in the IVF singleton cohort. The Monash Chart, but none of the existing charts, accurately determined gestational age among an independent IVF twin cohort (185 twin pairs). When applied to 3052 naturally-conceived singletons scans, The Monash Chart generated estimated due dates that were different to all existing charts (P ≤ 0.004 all comparisons). We conclude that commonly used ultrasound reference charts have inaccuracies. We have generated a CRL reference chart based on true gestational age in an IVF cohort that can accurately determine gestational age at 6-9 weeks of gestation.

准确测定胎龄是良好产科护理的基础。我们评估了现有的六种超声参考图的性能,以确定1268例单胎IVF妊娠的胎龄,其中“真实”胎龄可以从受精日期精确计算出来。所有图表生成的日期与IVF日期显著不同(所有比较P < 0.0001)。因此,我们生成了一个新的参考图,即莫纳什图,该图基于试管婴儿单胎队列中妊娠6 + 1至9 + 0周(真实胎龄)的最佳拟合线。莫纳什图表,但没有任何现有的图表,准确地确定了独立试管婴儿双胞胎队列(185对双胞胎)的胎龄。当应用于3052个自然受孕的单胎扫描时,莫纳什图表生成的预计预产期与所有现有图表不同(所有比较P≤0.004)。我们得出结论,常用的超声参考图有不准确性。我们已经生成了一个基于IVF队列真实胎龄的CRL参考图表,可以准确地确定妊娠6-9周的胎龄。
{"title":"Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6-9 weeks' Gestation.","authors":"Pavitra Delpachitra,&nbsp;Kirsten Palmer,&nbsp;Joseph Onwude,&nbsp;Simon Meagher,&nbsp;Luk Rombauts,&nbsp;Karen Waalwyk,&nbsp;Michael Bethune,&nbsp;Stephen Tong","doi":"10.5402/2012/938583","DOIUrl":"https://doi.org/10.5402/2012/938583","url":null,"abstract":"<p><p>Accurate determination of gestational age underpins good obstetric care. We assessed the performance of six existing ultrasound reference charts to determine gestational age in 1268 singleton IVF pregnancies, where \"true\" gestational age could be precisely calculated from date of fertilisation. All charts generated dates significantly different to IVF dates (P < 0.0001 all comparisons). Thus we generated a new reference chart, The Monash Chart, based on a line of best fit describing crown-rump length across 6 + 1 to 9 + 0 weeks of gestation (true gestational age) in the IVF singleton cohort. The Monash Chart, but none of the existing charts, accurately determined gestational age among an independent IVF twin cohort (185 twin pairs). When applied to 3052 naturally-conceived singletons scans, The Monash Chart generated estimated due dates that were different to all existing charts (P ≤ 0.004 all comparisons). We conclude that commonly used ultrasound reference charts have inaccuracies. We have generated a CRL reference chart based on true gestational age in an IVF cohort that can accurately determine gestational age at 6-9 weeks of gestation.</p>","PeriodicalId":73520,"journal":{"name":"ISRN obstetrics and gynecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/938583","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30830345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Diagnosing arthrogryposis multiplex congenita: a review. 多重先天性关节挛缩症的诊断综述。
Pub Date : 2012-01-01 Epub Date: 2012-09-23 DOI: 10.5402/2012/264918
Emmanouil Kalampokas, Theodoros Kalampokas, Chrisostomos Sofoudis, Efthymios Deligeoroglou, Dimitrios Botsis

Arthrogryposis multiplex congenita (AMC) refers either to a syndromic or to a nonsyndromic group of conditions with varied etiology and complex clinical features, including multiple congenital contractures in different body areas. Its etiology still remains unclear but generally any cause that leads to reduced fetal movement may lead to congenital contractures and in severe cases to fetal akinesia deformation sequence (FADS). It affects approximately 1 in 2-3000 live births with an approximately equal gender ratio. There are many known subgroups of AMC differing in signs, symptoms, and causes. The primary diagnosis is made when a lack of mobility and an abnormal position is noted in routine ultrasound scanning. Early diagnosis, prenatal evaluation, and further surveillance via image scanning (ultrasound and MRI) give the opportunity for family counseling concerning neonatal morbidity and mortality and labor or delivery planning. Better understanding of the ultrasound findings and the etiology of this clinical situation offers the opportunity for careful prenatal assessment.

多发性先天性关节挛缩(AMC)是指一组具有不同病因和复杂临床特征的综合征或非综合征性疾病,包括不同身体部位的多发性先天性挛缩。其病因尚不清楚,但通常任何导致胎动减少的原因都可能导致先天性挛缩,严重的情况下可能导致胎儿运动障碍变形序列(FADS)。大约每2-3000名活产婴儿中就有1名患有此病,男女比例大致相等。AMC有许多已知的亚群,在体征、症状和病因上各不相同。当在常规超声扫描中发现缺乏活动能力和异常位置时,进行初步诊断。早期诊断、产前评估以及通过图像扫描(超声和核磁共振成像)进行进一步监测,为有关新生儿发病率和死亡率以及分娩计划的家庭咨询提供了机会。更好地了解超声检查结果和这种临床情况的病因为仔细的产前评估提供了机会。
{"title":"Diagnosing arthrogryposis multiplex congenita: a review.","authors":"Emmanouil Kalampokas,&nbsp;Theodoros Kalampokas,&nbsp;Chrisostomos Sofoudis,&nbsp;Efthymios Deligeoroglou,&nbsp;Dimitrios Botsis","doi":"10.5402/2012/264918","DOIUrl":"https://doi.org/10.5402/2012/264918","url":null,"abstract":"<p><p>Arthrogryposis multiplex congenita (AMC) refers either to a syndromic or to a nonsyndromic group of conditions with varied etiology and complex clinical features, including multiple congenital contractures in different body areas. Its etiology still remains unclear but generally any cause that leads to reduced fetal movement may lead to congenital contractures and in severe cases to fetal akinesia deformation sequence (FADS). It affects approximately 1 in 2-3000 live births with an approximately equal gender ratio. There are many known subgroups of AMC differing in signs, symptoms, and causes. The primary diagnosis is made when a lack of mobility and an abnormal position is noted in routine ultrasound scanning. Early diagnosis, prenatal evaluation, and further surveillance via image scanning (ultrasound and MRI) give the opportunity for family counseling concerning neonatal morbidity and mortality and labor or delivery planning. Better understanding of the ultrasound findings and the etiology of this clinical situation offers the opportunity for careful prenatal assessment.</p>","PeriodicalId":73520,"journal":{"name":"ISRN obstetrics and gynecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/264918","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30965709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 75
Predictive and prognostic factors in definition of risk groups in endometrial carcinoma. 子宫内膜癌危险人群定义的预测和预后因素。
Pub Date : 2012-01-01 Epub Date: 2012-11-14 DOI: 10.5402/2012/325790
Bengt Sorbe

Background. The aim was to evaluate predictive and prognostic factors in a large consecutive series of endometrial carcinomas and to discuss pre- and postoperative risk groups based on these factors. Material and Methods. In a consecutive series of 4,543 endometrial carcinomas predictive and prognostic factors were analyzed with regard to recurrence rate and survival. The patients were treated with primary surgery and adjuvant radiotherapy. Two preoperative and three postoperative risk groups were defined. DNA ploidy was included in the definitions. Eight predictive or prognostic factors were used in multivariate analyses. Results. The overall recurrence rate of the complete series was 11.4%. Median time to relapse was 19.7 months. In a multivariate logistic regression analysis, FIGO grade, myometrial infiltration, and DNA ploidy were independent and statistically predictive factors with regard to recurrence rate. The 5-year overall survival rate was 73%. Tumor stage was the single most important factor with FIGO grade on the second place. DNA ploidy was also a significant prognostic factor. In the preoperative risk group definitions three factors were used: histology, FIGO grade, and DNA ploidy. Conclusions. DNA ploidy was an important and significant predictive and prognostic factor and should be used both in preoperative and postoperative risk group definitions.

背景。目的是评估大量连续子宫内膜癌的预测和预后因素,并讨论基于这些因素的术前和术后危险组。材料和方法。对4543例子宫内膜癌患者的复发率和生存率进行了预测和预后因素分析。患者均行手术治疗和放疗辅助治疗。定义了2个术前风险组和3个术后风险组。DNA倍性包含在定义中。在多变量分析中使用了8个预测或预后因素。结果。全系列的复发率为11.4%。中位复发时间为19.7个月。在多因素logistic回归分析中,FIGO分级、肌层浸润和DNA倍性是复发率的独立和统计学预测因素。5年总生存率为73%。肿瘤分期是唯一最重要的因素,FIGO分级排在第二位。DNA倍性也是一个重要的预后因素。术前危险组定义采用三个因素:组织学、FIGO分级和DNA倍性。结论。DNA倍体是一个重要且重要的预测和预后因素,在术前和术后风险组定义中都应使用。
{"title":"Predictive and prognostic factors in definition of risk groups in endometrial carcinoma.","authors":"Bengt Sorbe","doi":"10.5402/2012/325790","DOIUrl":"https://doi.org/10.5402/2012/325790","url":null,"abstract":"<p><p>Background. The aim was to evaluate predictive and prognostic factors in a large consecutive series of endometrial carcinomas and to discuss pre- and postoperative risk groups based on these factors. Material and Methods. In a consecutive series of 4,543 endometrial carcinomas predictive and prognostic factors were analyzed with regard to recurrence rate and survival. The patients were treated with primary surgery and adjuvant radiotherapy. Two preoperative and three postoperative risk groups were defined. DNA ploidy was included in the definitions. Eight predictive or prognostic factors were used in multivariate analyses. Results. The overall recurrence rate of the complete series was 11.4%. Median time to relapse was 19.7 months. In a multivariate logistic regression analysis, FIGO grade, myometrial infiltration, and DNA ploidy were independent and statistically predictive factors with regard to recurrence rate. The 5-year overall survival rate was 73%. Tumor stage was the single most important factor with FIGO grade on the second place. DNA ploidy was also a significant prognostic factor. In the preoperative risk group definitions three factors were used: histology, FIGO grade, and DNA ploidy. Conclusions. DNA ploidy was an important and significant predictive and prognostic factor and should be used both in preoperative and postoperative risk group definitions.</p>","PeriodicalId":73520,"journal":{"name":"ISRN obstetrics and gynecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/325790","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31096912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 23
Flow-mediated vasodilation is not attenuated in hypertensive pregnancies despite biochemical signs of inflammation. 血流介导的血管舒张在高血压妊娠中没有减弱,尽管有炎症的生化迹象。
Pub Date : 2012-01-01 Epub Date: 2012-01-17 DOI: 10.5402/2012/709464
Heli Saarelainen, Henna Kärkkäinen, Pirjo Valtonen, Kari Punnonen, Tomi Laitinen, Nonna Heiskanen, Tiina Lyyra-Laitinen, Esko Vanninen, Seppo Heinonen

Background. Our objective was to evaluate endothelial function and markers of inflammation during and after pregnancy in normal pregnancies compared to pregnancies complicated with hypertension or preeclampsia (PE). Methods and Results. We measured endothelium-dependent brachial artery flow-mediated vasodilation (FMD) and high sensitive C-reactive protein (hsCRP), interleukin-6 (IL-6), and tumour necrosis factor-α (TNF-α) in 32 women with normal pregnancy and in 28 women whose pregnancy was complicated with hypertensive disorder in the second half of pregnancy and minimum 3-month postpartum. Enhancement of endothelial function was greater in hypertensive than normal pregnancies, the mean FMD% being 11.0% versus 8.8% during pregnancy (P = 0.194) and 8.0% versus 7.9% postpartum (P = 0.978). Concentrations of markers of inflammation were markedly increased in pregnant hypertensive group compared to those after delivery (hsCRP 4.5 versus 0.80 mg/L, P = 0.023, IL-6 2.1 versus 1.2 pg/mL, P = 0.006; TNF-α 1.9 versus 1.5 pg/mL, P = 0.030). There were no statistically significant associations between the markers of inflammation and FMD. Conclusions. Brachial artery FMD was not attenuated in the third trimester hypertensive pregnancies compared to normal pregnancies, whereas circulating concentrations of hsCRP and IL-6 and TNF-α reacted to hypertensive complications.

背景。我们的目的是评估正常妊娠与合并高血压或子痫前期妊娠(PE)的妊娠期间和妊娠后的内皮功能和炎症标志物。方法与结果。我们测量了32名正常妊娠妇女和28名妊娠中期和产后至少3个月合并高血压疾病的妇女的内皮依赖性肱动脉血流介导的血管舒张(FMD)和高敏c反应蛋白(hsCRP)、白细胞介素-6 (IL-6)和肿瘤坏死因子-α (TNF-α)。妊娠期高血压患者内皮功能增强明显高于正常妊娠,妊娠期平均FMD%为11.0%比8.8% (P = 0.194),产后平均FMD%为8.0%比7.9% (P = 0.978)。妊娠期高血压组炎症标志物浓度较分娩后明显升高(hsCRP 4.5 vs 0.80 mg/L, P = 0.023; IL-6 2.1 vs 1.2 pg/mL, P = 0.006;TNF-α 1.9 vs 1.5 pg/mL, P = 0.030)。炎症标志物与口蹄疫之间无统计学意义的关联。结论。与正常妊娠相比,妊娠晚期高血压妊娠的肱动脉FMD并未减弱,而hsCRP、IL-6和TNF-α的循环浓度与高血压并发症有关。
{"title":"Flow-mediated vasodilation is not attenuated in hypertensive pregnancies despite biochemical signs of inflammation.","authors":"Heli Saarelainen,&nbsp;Henna Kärkkäinen,&nbsp;Pirjo Valtonen,&nbsp;Kari Punnonen,&nbsp;Tomi Laitinen,&nbsp;Nonna Heiskanen,&nbsp;Tiina Lyyra-Laitinen,&nbsp;Esko Vanninen,&nbsp;Seppo Heinonen","doi":"10.5402/2012/709464","DOIUrl":"https://doi.org/10.5402/2012/709464","url":null,"abstract":"<p><p>Background. Our objective was to evaluate endothelial function and markers of inflammation during and after pregnancy in normal pregnancies compared to pregnancies complicated with hypertension or preeclampsia (PE). Methods and Results. We measured endothelium-dependent brachial artery flow-mediated vasodilation (FMD) and high sensitive C-reactive protein (hsCRP), interleukin-6 (IL-6), and tumour necrosis factor-α (TNF-α) in 32 women with normal pregnancy and in 28 women whose pregnancy was complicated with hypertensive disorder in the second half of pregnancy and minimum 3-month postpartum. Enhancement of endothelial function was greater in hypertensive than normal pregnancies, the mean FMD% being 11.0% versus 8.8% during pregnancy (P = 0.194) and 8.0% versus 7.9% postpartum (P = 0.978). Concentrations of markers of inflammation were markedly increased in pregnant hypertensive group compared to those after delivery (hsCRP 4.5 versus 0.80 mg/L, P = 0.023, IL-6 2.1 versus 1.2 pg/mL, P = 0.006; TNF-α 1.9 versus 1.5 pg/mL, P = 0.030). There were no statistically significant associations between the markers of inflammation and FMD. Conclusions. Brachial artery FMD was not attenuated in the third trimester hypertensive pregnancies compared to normal pregnancies, whereas circulating concentrations of hsCRP and IL-6 and TNF-α reacted to hypertensive complications.</p>","PeriodicalId":73520,"journal":{"name":"ISRN obstetrics and gynecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/709464","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30540438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Perinatal outcome in unbooked teenage pregnancies in the university of calabar teaching hospital, calabar, Nigeria. 尼日利亚卡拉巴尔卡拉巴尔大学教学医院未登记少女怀孕的围产期结局。
Pub Date : 2012-01-01 Epub Date: 2012-03-04 DOI: 10.5402/2012/246983
C U Iklaki, J U Inaku, J E Ekabua, E I Ekanem, A E Udo

Background. Teenage pregnancy being a high risk condition requires skilled attention for good outcome. Objectives. To determine the influence of antenatal care on perinatal outcome in teenage pregnancies in Calabar. Materials and Methods. A review of patient records in Calabar was conducted between 1st January, 2006 and 31st December, 2010, to determine perinatal outcome in teenage pregnancy. Results. Teenage pregnancy accounted for 644 (6.5%) of the total deliveries with 245 (38.0%) booked while 399 (62.0%) were unbooked. Teenage mothers contributed significantly to the proportion of women who were delivered without prior antenatal care (χ(2) = 6.360; P < 0.05). The mean duration of labour in booked teenagers was 10.85 ± 4.2 hours, while unbooked teenagers was 23.31 ± 3.6 hours (t-value = 77.1039; P < 0.05). There was statistically more caesarean sections among unbooked teenage pregnancies than booked (χ(2) = 36.75; P < 0.05). Stillbirth was statistically significant (χ(2) = 27.096; P < 0.05) among unbooked teenagers than booked. However, early neonatal death was not significantly different between booked and unbooked teenage pregnancies(χ(2) = 0.512; P < 0.05). Conclusion. Unbooked teenage pregnancies were significantly associated with increased operative intervention and poor perinatal outcome.

背景青少年怀孕是一种高风险的情况,需要熟练的关注才能获得良好的结果。目标。确定产前护理对卡拉巴尔青少年妊娠围产期结果的影响。材料和方法。2006年1月1日至2010年12月31日期间,对卡拉巴尔的患者记录进行了审查,以确定青少年妊娠的围产期结果。后果青少年怀孕占分娩总数的644例(6.5%),其中245例(38.0%)已预约,399例(62.0%)未预约。未成年母亲对未经产前护理分娩的妇女比例有显著影响(χ(2)=6.360;P<0.05)。预约青少年的平均产程为10.85±4.2小时,而未预约青少年的产程为23.31±3.6小时(t值=77.1039;P<0.05;P<0.05),死产有统计学意义(χ(2)=27.096;P<0.05)。然而,预约和未预约的青少年妊娠的新生儿早期死亡没有显著差异(χ(2)=0.512;P<0.05)。未预约的少女怀孕与手术干预的增加和不良围产期结局显著相关。
{"title":"Perinatal outcome in unbooked teenage pregnancies in the university of calabar teaching hospital, calabar, Nigeria.","authors":"C U Iklaki,&nbsp;J U Inaku,&nbsp;J E Ekabua,&nbsp;E I Ekanem,&nbsp;A E Udo","doi":"10.5402/2012/246983","DOIUrl":"10.5402/2012/246983","url":null,"abstract":"<p><p>Background. Teenage pregnancy being a high risk condition requires skilled attention for good outcome. Objectives. To determine the influence of antenatal care on perinatal outcome in teenage pregnancies in Calabar. Materials and Methods. A review of patient records in Calabar was conducted between 1st January, 2006 and 31st December, 2010, to determine perinatal outcome in teenage pregnancy. Results. Teenage pregnancy accounted for 644 (6.5%) of the total deliveries with 245 (38.0%) booked while 399 (62.0%) were unbooked. Teenage mothers contributed significantly to the proportion of women who were delivered without prior antenatal care (χ(2) = 6.360; P < 0.05). The mean duration of labour in booked teenagers was 10.85 ± 4.2 hours, while unbooked teenagers was 23.31 ± 3.6 hours (t-value = 77.1039; P < 0.05). There was statistically more caesarean sections among unbooked teenage pregnancies than booked (χ(2) = 36.75; P < 0.05). Stillbirth was statistically significant (χ(2) = 27.096; P < 0.05) among unbooked teenagers than booked. However, early neonatal death was not significantly different between booked and unbooked teenage pregnancies(χ(2) = 0.512; P < 0.05). Conclusion. Unbooked teenage pregnancies were significantly associated with increased operative intervention and poor perinatal outcome.</p>","PeriodicalId":73520,"journal":{"name":"ISRN obstetrics and gynecology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2012/246983","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40173384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 28
期刊
ISRN obstetrics and gynecology
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1