羊膜腔输注药物治疗羊水过少并发胎儿窘迫的临床效果观察

目的探讨羊膜腔输液、羊水置换及羊膜腔输注碱性药物治疗胎儿窘迫酸中毒的临床效果。方法对40例羊水过少、产程中胎心监护出现胎心律异常波形、Ⅱ度以上羊水胎粪污染产妇,在持续内监护下行羊膜腔输液、羊水置换治疗,其中20例分娩前行羊膜腔输入5%NaHCO3150ml(研究组),20例分娩前行静脉注射5%NaHCO3150ml(对照组),分娩后立即抽取两组新生儿脐动脉血行血气分析,并对两组新生儿行Apgar评分比较。结果(1)羊膜腔输液治疗:两组40例产妇中胎心律异常波形消失27例(27/40,68%),胎心律异常波形明显减少8例(8/40,20%),治疗有效率为88%(35/40);无变化或加重5例(5/40,13%)。(2)羊水置换治疗:两组40例产妇平均每例羊水置换Ⅱ~Ⅲ度胎类污染羊水900ml,最少700ml,最多1200ml。经羊水置换后抽出羊水清亮者21例(21/40,53%),羊水Ⅰ度污染者13例(13/40,33%),有效率为85%(34/40);仍有羊水Ⅱ度污染6例(6/40,15%)。(3)研究组脐动脉血二氧化碳分压(PCO2)、氧分压(PO2)、碳酸氢盐(HCO3-)、剩余碱(ABE)、标准碱(SBE)等指标明显好于对照组,两组比较,差异均有统计学意义(P<0·05,P<0·01)。(4)研究组新生儿出生后1分钟Apgar评分平均为(9·2±1·1)分,对照组平均为(8·7±1·7)分,两组比较,差异有统计学意义(P<0·05)。结论羊膜腔输液及羊水置换是治疗因胎儿窘迫及预防新生儿胎粪吸入综合征的有效方法,羊膜腔输注碱性药物能有效纠正胎儿酸中毒。     

产程中持续内监护下行羊膜腔输液及羊水置换治疗胎儿窘迫

目的 探讨产程中持续内监护下行羊膜腔输及羊水置换,对治疗胎儿窘迫的意义。方法 对产程中出现频发可变减速合并羊水胎粪污染者１３６例,随机分为观察组与对照组各６８例,观察组在持续内监护下行羊膜腔输液或羊水置换。对照组给予吸氧、改变体位、静脉输液等治疗。结果观察组经羊膜腔输液５００￣１０００ｍｌ,ＶＤ波消失或明显改善者占９１．２％,同时对观察组中４８例羊水Ⅱ度以上粪染者行羊水置换,其中３９例羊水国 清亮     

第一产程异常胎心监护图形与新生儿结局的关系

目的　探讨第一产程异常胎心监护图形与新生儿结局的关系。方法　回顾分析 2 0 0 2年 8月至 2 0 0 3年 6月在我院足月单胎头位分娩产妇 ,第一产程中胎心率 (FHR)异常图形 2 1 7例 (观察组 )和FHR正常图形的2 6 9例 (对照组 )的临床资料。结果　第一产程异常FHR图形的发生率为 4 4 7% ,常见类型为轻度变异减速(6 4 5 % )、基线变异减弱 (2 1 6 % )和轻度心动过速 (1 2 0 % )。晚期减速、基线变异减弱和重度变异减速是导致新生儿窒息的危险因素。观察组羊水过少 (5 1 % )、脐带缠绕 (2 2 6 % )、羊水粪染 (1 0 6 % )、新生儿窒息 (6 5 % )、新生儿转入NICU(1 0 1 % )的发生率和剖宫产率 (31 8% )明显高于对照组 (P <0 0 5 )。结论　第一产程异常FHR图形的发生率较高 ,其中晚期减速、基线变异减弱、重度变异减速与新生儿窒息的发生相关 ,其他图形可在严密监护下继续试产     

产程中羊水胎粪污染行羊水置换预防新生儿窒息的意义

羊水胎粪污染与胎儿窘迫及新生儿窒息有关,可引起新生儿胎粪吸入综合征（MAS）,影响围产儿预后。我们对产程中羊水Ⅱ度以上胎粪污染者行羊水置换,观察其对围产儿预后及剖宫产率的影响。现报道如下。1资料与方法1．1临床资料产程中前羊水Ⅱ度以上污染共60例,随机分为观察组和对照组,每组30例。观察组平均孕41周,初产妇26例,经产妇4例,羊水过少18例,羊水量正常12例。宫口开大3cm,行人工破膜19例,宫口开大4～scm自然破膜11例。羊水Ⅲ度污染21例,Ⅱ度污染9例。胎心监护有变异减速波（VD）及延年减速波（PD）14例,VD波有晚期减…     

应用羊水置换术治疗产时羊水Ⅱ、Ⅲ度胎粪污染

目的 :研究产时应用羊水置换技术对治疗羊水Ⅱ、Ⅲ度胎粪污染的疗效。方法 :选择产时羊水Ⅱ、Ⅲ度胎粪污染的足月单胎头位分娩孕妇 88例 ,其中的 4 4例进行羊水置换术的作为研究组 (A组 ) ;未进行羊水置换操作的另外 4 4例作为对照组 (B组 ) ;另选羊水无胎粪污染的 4 4例孕妇作为实验研究的空白对照组 (C组 )。观察其VD波缓解率、剖宫产率、新生儿血气分析及Apgar评分。结果 :A组变异减速 (VD)波的缓解率高于B组 (6 4.0 0 % ,2 9.17% ,P <0 .0 5 ) ;A组新生儿出生后 1分钟的脐血血气的pH值较B组高 (P <0 .0 5 ) ;A组的剖宫产率 (45 .4 5 % )低于B组(6 8.18% )。结论 :羊水置换对产时羊水Ⅱ、Ⅲ度胎粪污染有显著的疗效 ,可以明显改善新生儿的酸中毒与预后 ,且可以降低剖宫产率。     

经阴道羊膜腔灌注治疗单胎初产妇临产后羊水过少的母儿结局分析

目的:分析经阴道羊膜腔灌注治疗临产后羊水过少的单胎初产妇分娩结局和新生儿结局。方法:回顾性分析中国人民武装警察部队特色医学中心2015年4月—2018年3月临产后诊断为羊水过少的358例单胎初孕妇,分为行经阴道羊膜腔灌注的治疗组(166例)和未行羊膜腔灌注的对照组(192例),比较2组的分娩结局(顺产率、产钳助产率、剖宫产率、产后出血率和产褥感染率)和新生儿结局[新生儿脐动脉血pH值、脐动脉血乳酸值、出生后1 min Apgar评分、胎粪吸入综合征(MAS)发生率、入住新生儿科率]。结果:治疗组的顺产率高于对照组,产钳助产率和剖宫产率低于对照组,差异有统计学意义(P0.05)。治疗组的产后出血率和产褥感染率与对照组相比差异无统计学意义(P0.05)。治疗组的新生儿脐动脉血p H值、新生儿1 min Apgar评分高于对照组,而治疗组新生儿脐动脉血乳酸值、MAS发生率和入住新生儿科率低于对照组,差异均具有统计学意义(P0.05)。结论:经阴道羊膜腔灌注治疗单胎初产妇临产后羊水过少是安全有效的,可以显著改善分娩结局和新生儿结局。     

经阴道羊膜腔灌注治疗单胎初产妇临产后羊水过少的母儿结局分析

目的:分析经阴道羊膜腔灌注治疗临产后羊水过少的单胎初产妇分娩结局和新生儿结局。方法:回顾性分析中国人民武装警察部队特色医学中心2015年4月—2018年3月临产后诊断为羊水过少的358例单胎初孕妇,分为行经阴道羊膜腔灌注的治疗组(166例)和未行羊膜腔灌注的对照组(192例),比较2组的分娩结局(顺产率、产钳助产率、剖宫产率、产后出血率和产褥感染率)和新生儿结局[新生儿脐动脉血pH值、脐动脉血乳酸值、出生后1 min Apgar评分、胎粪吸入综合征(MAS)发生率、入住新生儿科率]。结果:治疗组的顺产率高于对照组,产钳助产率和剖宫产率低于对照组,差异有统计学意义(P<0.05)。治疗组的产后出血率和产褥感染率与对照组相比差异无统计学意义(P>0.05)。治疗组的新生儿脐动脉血p H值、新生儿1 min Apgar评分高于对照组,而治疗组新生儿脐动脉血乳酸值、MAS发生率和入住新生儿科率低于对照组,差异均具有统计学意义(P<0.05)。结论:经阴道羊膜腔灌注治疗单胎初产妇临产后羊水过少是安全有效的,可以显著改善分娩结局和新生儿结局。     

羊膜腔内灌注术在临床的应用

羊膜腔灌注术有经阴道与经腹两种方式。多数情况下，其可以显著地改善胎粪污染或羊水过少等的母儿预后，减少胎儿胎粪吸入，减轻酸中毒，缓解胎心变异减速，延长胎膜早破胎儿的孕龄，降低剖宫产率及围产期发病率及死亡率。对提高羊膜腔置换术的认识，对其应用指征及机理，运用方法及并发症等临床情况进行综述。     

羊水补充疗法

羊水补充疗法(amnioinfusion)是人工向羊膜腔内注入生理盐水或乳酸林格氏液,操作简单,常用以治疗或预防产时急性胎儿宫内窘迫。其适应症为频发重度胎心变异减速,延长减速、过期妊娠,IUGR、胎膜早破等所致羊水过少,以及羊水混有胎便等。其禁忌症为出现胎心迟发减速及变异减少的明显胎儿宫内窘迫或可疑胎盘早期剥离者。 治疗性羊水补充疗法:产时因脐带血循环受阻所致胎心变异减速最为多见,IUGR和胎膜早破致羊水量减少者(羊水指数≤5cm),易发生胎儿变异减速,但只要基线变异保持正常,不一定意味酸     

羊水胎粪污染的产科处理方法探讨

目的 探讨羊水胎粪污染的产科处理时机与方法。方法 对1998年1月至1998年12月在我院分娩的、产程中羊水为Ⅱ～Ⅲ度污染的220例初产妇的母婴结局进行回顾性分析,其中破膜时羊水粪染(Ⅰ组)有120例,产程中羊水由清亮变为污染(Ⅱ组)有100例;另随机选择同期产程中羊水清亮的210例产妇为对照组。结果 1254例产妇中,羊水胎粪污染的发生率为17.5％;粪染组在母体合并症、胎心监护异常发生率、剖宫产率及新生儿窒息率上均高于对照组(P<0.01);Ⅱ组在胎心监护异常及新生儿窒息的发生率上高于羊水粪染Ⅰ组(P<0.01)。结论 重视羊水粪染的临床处理。在伴发母体合并症、胎心监护异常及产程中羊水由清亮变为粪染时处理需积极,以及早剖宫产及缩短第二产程为宜。在无上述情况下,可在严密监护下阴道分娩。     

Meconium in the amniotic fluid of pregnancies complicated by preterm premature rupture of membranes is associated with early onset neonatal sepsis

Objective: This study was to determine the significance of meconium in the amniotic fluid of pregnancies complicated by preterm premature rupture of membranes (PPROM) without labor.Methods: A case-control study of 31 pregnancies complicated by PPROM at 27-36 weeks gestation with meconium present (study group) and 93 pregnancies complicated by PPROM but without meconium was performed. The patients were matched for year of delivery, gestational age, race, and parity. Pregnancy and neonatal outcome variables of the 2 groups were compared.Results: The incidence of early onset neonatal sepsis was significantly increased in the study group (16.1% vs. 1.1%; P < 0.001). Similarly, chorioamnionitis (48.3% vs. 22.5%; P < 0.01), cesarean delivery for a nonreassuring fetal heart rate pattern (19.4% vs. 3.2%; P < 0.01), a 5-min Apgar score < 7 (22.5% vs. 8.6%; P < 0.05), and fetal growth retardation (FGR) (12.9% vs. 2.2%; P < 0.05) were also more common in pregnancies complicated by PPROM with meconium. The mean umbilical cord arterial pH was significantly lower in these pregnancies (7.18 +/- 0.07 vs. 7.28 +/- 0.08; P < 0.001). After controlling for confounding variables with multiple logistic regression analysis, we found that meconium in the amniotic fluid remained associated with early onset neonatal sepsis.Conclusions: The presence of meconium in the amniotic fluid of pregnancies complicated by PPROM is associated with an increased incidence of early onset neonatal group B beta-hemolytic streptococcus (GBBS) sepsis.     

Monitoring of labour and delivery in the presence of meconium stained amniotic fluid by pulse oximetry

OBJECTIVES: Evidence of meconium-stained amniotic fluid during labor suggests implementation of close monitoring of fetal well-being. DESIGN: Our purpose was to compare fetal oxygen saturation between cases with normal and meconium stained amniotic fluid. MATERIALS AND METHODS: Fetal oxygen saturation was continuously recorded with use of Nellcor N-400 fetal pulse oximeter in 30 control cases of term labour of normal, and 30 cases of meconium stained amniotic fluid. Distribution of fetal oxygen saturation values during 5 periods of labour was analyzed and compared between the examined groups, and presented in forms of Tables, together with neonatal umbilical artery pH values, Apgar score, birth weight and percentage of caesarian sections performed. RESULTS: No significant differences in fetal oxygen saturation, neonatal umbilical artery pH, birth weight and caesarian sections rate were observed between analyzed groups. Newborns 1-th minute Apgar score (mean value) and base excess was lower in meconium group compared to control group. CONCLUSIONS: Our data demonstrate, that fetal oxygen saturation trends to decrease during labour in fetuses in both groups.     

0.8 mm控释地诺前列酮栓用于足月胎膜早破促宫颈成熟的多中心研究

目的 探讨0.8 mm控释地诺前列酮栓(其他名称:欣普贝生)用于足月胎膜早破促宫颈成熟的安全性及有效性.方法 采用多中心、前瞻性研究方法,选择孕足月、单胎、头位,宫颈Bishop评分<6分、无严重合并症及引产禁忌证、胎儿情况正常的足月胎膜早破产妇100例为观察组,选择同期条件相同、具备引产指征的180例胎膜完整产妇作为对照组.在无菌操作下,将0.8 mm控释地诺前列酮阴道栓剂1枚横向置于产妇的阴道后穹隆深部,药物放置后产妇卧床2 h.记录两组产妇药物放置至宫缩开始、临产及分娩的时间;药物平均放置时间;胎心率异常、羊水粪染、子宫过度刺激情况及其他不良反应;分娩方式、产程时间、产后出血量及新生儿情况.结果 两组共280例产妇中,26例置药后24 h未临产(9.3%,26/280),其中观察组3例,对照组23例;观察组24 h内临产率为97.0%(97/100),明显高于对照组的87.2%(157/180),两组比较,差异有统计学意义(P<0.01).观察组73例阴道分娩(75.3%,73/97),24例剖宫产分娩(24.7%,24/97);对照组107例阴道分娩(68.2%,107/157),50例剖宫产分娩(31.8%,50/157),两组阴道分娩及剖宫产率比较,差异均无统计学意义(P>0.05).两组药物放置至宫缩开始时间、药物平均放置时间、总产程时间比较,差异也无统计学意义(P>0.05).观察组宫缩过频发生率为11.3%(11/97),对照组为19.1%(30/157),两组比较,差异无统计学意义(x2=2.673,P>0.05);两组均无新生儿窒息发生.结论 0.8 mm控释地诺前列酮栓用于足月胎膜早破促宫颈成熟安全、有效,但用药期间应加强监护.     

New onset of meconium during labor versus primary meconium-stained amniotic fluid – is there a difference in pregnancy outcome?

Abstract

Objective: To compare pregnancy outcome between deliveries complicated by new onset of meconium during labor following prior evidence of clear amniotic fluid and labors in which meconium was present to begin with.

Methods: A retrospective cohort study of all singleton term (≥37?+?0 weeks) deliveries complicated by intrapartum meconium-stained amniotic fluid in a tertiary referral medical center during the year 2012. Outcome was compared between deliveries with new onset of meconium during labor following prior evidence of clear amniotic fluid (secondary meconium group) and those in which meconium was already evident at the time of membranes rupture (primary meconium group).

Results: Of the 9167 deliveries during the study period, 694 were eligible for the study group. Of these, 537 were complicated by primary meconium and 157 by secondary meconium. Only secondary meconium, but not primary meconium, was independently associated with an increased risk of operative vaginal delivery (OVD) and adverse neonatal outcome. Pregnancies complicated by secondary meconium were independently associated with a higher rate of OVD (28.0% versus 11.4%, p?<?0.001), POP position of the fetal head (6.4% versus 2.6%, p?=?0.02), and adverse neonatal outcome (17.2% versus 8.9%, p?=?0.003).

Conclusion: Secondary meconium is associated with a higher rate of adverse obstetrical and neonatal outcome compared with primary meconium.     

Monocyte chemotactic protein-1 in cervical and amniotic fluid: relationship to microbial invasion of the amniotic cavity, intra-amniotic inflammation, and preterm delivery

OBJECTIVE: The purpose of this study was to evaluate the role of monocyte chemotactic protein-1 in cervical and amniotic fluid in women in preterm labor and with preterm premature rupture of membranes. STUDY DESIGN: Women with singleton pregnancies (相似文献   

Should fetal scalp blood sampling be performed in the case of meconium-stained amniotic fluid?

Objective: To investigate the effect of using fetal scalp blood sampling on the risk of neonatal respiratory distress syndrome (NRDS) with meconium-stained amniotic fluid (MSAF).

Methods: Prospective data collection with regard to MSAF during labor for low-risk term cephalic singleton live birth from 2012 to 2014. Maternal, obstetric and neonatal data were compared according to the occurrence of respiratory distress syndrome (RDS group) or not (no RDS group).

Results: Of 515 newborns born through MSAF, 46 experienced RDS and from them 10 experienced meconium aspiration syndrome. No difference was observed according to maternal characteristic, abnormal fetal heart rate tracing pattern irrespective of its category and cesarean rate. Apgar at one?minute was lower in the group RDS (7.6 versus 8.5, p?<?0.05). The mean umbilical artery pH values did not differ between the two groups. Significant difference between newborns with and without RDS in terms of fetal scalp lactate sampling during the labor (71.1% versus 55.1%, p?<?0.05), and neonatal care unit (NCU) admissions (22.8% versus 10.8%, p?<?0.05). Secondary rather than primary meconium was associated with RDS when performing fetal scalp blood assessment (p?<?0.05). A significant correlation between RDS, fetal scalp blood assessment and MSAF diagnosed during the first stage of labor (after spontaneous rupture of membranes or at amniotomy) was found.

Conclusion: In case of MSAF, fetal scalp blood sampling did not reduce the risk of RDS.     

A study of the relationship between placenta growth factor and gestational age, parturition, rupture of membranes, and intrauterine infection

OBJECTIVE: Placenta growth factor is a potent angiogenic factor produced by the human placenta that has been implicated in the pathogenesis of preeclampsia and intrauterine growth restriction. Placenta growth factor belongs to the vascular endothelial growth factor family and is capable of inducing proliferation, migration, and activation of endothelial cells. The objective of this study was to determine the relationship between amniotic fluid concentration of placenta growth factor and gestational age, parturition (term and preterm), spontaneous rupture of the membranes, and intra-amniotic infection. STUDY DESIGN: Amniotic fluid samples obtained from 273 pregnant patients were assayed in the following clinical groups: midtrimester pregnancy, preterm labor who delivered at term, preterm labor without microbial invasion of the amniotic cavity who delivered preterm, preterm labor with microbial invasion of the amniotic cavity, term not in labor, term in labor, term with microbial invasion of the amniotic cavity, preterm premature rupture of membranes with and without microbial invasion of the amniotic cavity, and term with premature rupture of membranes without microbial invasion of the amniotic cavity. The placenta growth factor concentrations were determined by an immunoassay that is both sensitive and specific. RESULTS: Placenta growth factor was detectable in 96.3% (263/273) of samples. Amniotic fluid placenta growth factor concentration decreased with advancing gestational age (r = -0.42; P <.001). Amniotic fluid placenta growth factor concentrations were significantly higher in women in midtrimester pregnancy than in those at term not in labor (midtrimester pregnancy: median, 43.1 pg/mL; range, 22.9-69.8 pg/mL; vs term not in labor: median, 28.7 pg/mL; range, 16.1-82.7 pg/mL; P <.01). Neither term nor preterm parturition was associated with a change in amniotic fluid placenta growth factor concentrations. Term premature rupture of membranes was associated with a significant decrease in amniotic fluid placenta growth factor concentration (term premature rupture of membranes: median, 16.5 pg/mL; range <5.2-195.1 pg/mL; vs term intact membranes: median, 28.7 pg/mL; range, 16.1-822.7 pg/mL; P <.005). Preterm premature rupture of membranes was not associated with changes in amniotic fluid placenta growth factor concentrations. Intra-amniotic infection in preterm labor, term labor with intact membranes, and preterm premature rupture of membranes were not associated with changes in amniotic fluid placenta growth factor concentrations. CONCLUSION: Placenta growth factor is a physiologic constituent of amniotic fluid. Amniotic fluid concentrations of placenta growth factor decrease with advancing gestational age. Neither parturition nor infection affects amniotic fluid placenta growth factor concentrations.     

Significance of meconium during labor.

Continuous fetal heart rate (FHR) monitoring and routine fetal scalp blood sampling was utilized in the evaluations of 366 fetuses during labor. One hundred and six patients had meconium in the amniotic fluid at some time during labor. A total of 26,110 uterine contractions were monitored during these 366 labors. The incidence of FHR patterns as a percentage of uterine contractions was calculated for the meconium and nonmeconium groups. Although there was a 3 1/2-fold increase in the incidence of low five-minute Apgar scores (less than 7) in the meconium group, signs of fetal distress were, with rare esception, not significantly different from those in the nonmeconium group. The presence of meconium in the amniotic fluid without signs of fetal asphyxia (late decelerations and acidosis) is not a sign of fetal distress and need not be an indication for active intervention. The combination of fetal asphyxia and meconium staining of the amniotic fluid, however, does enhance the potential for meconium aspiration and a poor neonatal outcome. Universal fetal heart rate monitoring and appropriate fetal acid-base evaluation is recommended for following patients with meconium in the amniotic fluid during labor.     

Value of amniotic fluid neutrophil collagenase concentrations in preterm premature rupture of membranes.

OBJECTIVE: Neutrophils in amniotic fluid are thought to be of fetal origin, and therefore the detection of these cells and/or their products in amniotic fluid may reflect the fetal inflammatory status. We propose that amniotic fluid neutrophil collagenase (matrix metalloproteinase-8) is a useful parameter to predict adverse neonatal outcome, impending preterm labor/delivery, and intrauterine infection in the setting of preterm premature rupture of the membranes. STUDY DESIGN: Amniotic fluid was obtained by transabdominal amniocentesis from 101 patients with preterm premature rupture of the membranes (gestational age, 24-36 weeks). Fluid was cultured for aerobic and anaerobic bacteria and Mycoplasmas. Amniotic fluid analysis included Gram stain, white blood cell count, and determination of interleukin-6 and matrix metalloproteinase-8 concentrations (enzyme-linked immunosorbent assay). RESULTS: Neonates with adverse neonatal outcome were born to mothers with a significantly higher median amniotic fluid matrix metalloproteinase-8 concentration than those without adverse neonatal outcome (median, 54.4 ng/mL; range, 0.82-14,500 ng/mL vs median, 28.9 ng/mL; range, 0.78-2451.8 ng/mL; P <.05, respectively). The higher the amniotic fluid matrix metalloproteinase-8 concentrations, the shorter the interval to delivery (Cox proportional hazards model adjusting for gestational age at delivery; hazard ratio, 1.9; 95% CI, 1.1-3.5; P <.03). Amniotic fluid matrix metalloproteinase-8 concentration was more sensitive than an amniotic fluid white blood cell count and interleukin-6 in the detection of microbiologically proven intra-amniotic infection. CONCLUSION: Increased concentrations of neutrophil collagenase (matrix metalloproteinase-8) in amniotic fluid are associated with intra-amniotic infection, impending preterm delivery, and adverse neonatal outcome in patients with preterm premature rupture of the membranes. Moreover, matrix metalloproteinase-8 in amniotic fluid is a stronger predictor for the duration of pregnancy and intra-amniotic inflammation than interleukin-6 and an amniotic fluid white blood cell count.