Relationships Among Factors Related to Childbirth and Breastfeeding Outcomes in Primiparous Women

ObjectivesTo explore the relationships among potentially modifiable factors related to childbirth and effective breastfeeding initiation at approximately 36 hours after birth and duration and exclusivity at hospital discharge, 2 weeks, 2 months, and 6 months after birth in primiparous women and to explore whether modifiable and nonmodifiable secondary factors and covariates influenced the relationships among factors related to childbirth and these breastfeeding outcomes.DesignA prospective, longitudinal, cohort study.SettingThe postpartum units of two general hospitals in eastern Canada.ParticipantsNinety-seven mother–infant dyads.MethodsWe recorded demographic, childbirth, obstetric history, and breastfeeding data through chart review. A breastfeeding observation was completed at approximately 36 hours after birth by unit nurses. Participants maintained breastfeeding logs in hospital and for 6 months after birth and completed three self-report questionnaires before discharge. We analyzed outcomes using backward stepwise linear and logistic regression.ResultsOne childbirth factor, labor induced with oxytocin, was negatively associated with effective initiation of breastfeeding, and none was related to breastfeeding duration and exclusivity at any time point. Maternal weight; professional support; and newborn’s gestational age at birth, 5-minute Apgar score, weight loss, LATCH score, and active feeds (newborn actively suckled at the breast) were significantly associated with breastfeeding outcomes.ConclusionInduction of labor with oxytocin should be used judiciously; when used, nurses must be hypervigilant to assess the mother–infant dyad for breastfeeding issues and to intervene to prevent or remediate them.     

妊娠合并肝内胆汁郁积症的围生儿结局57例分析

目的 探讨妊娠合并肝内胆汁郁积症（ICP）患者致围生儿不良结局的相关指标。方法 总结本院57例ICP患者的相关临床资料，将其与围生儿结局进行分组对照分析。结果 血清胆汁酸升高与围生儿不良结局关系不明显（P＞0.05)；血清转氨酶水平在产生围生儿不良结局组与未产生围生儿不良结局组之间有显著性差异（P＞0.01)；皮肤瘙痒持续时间大于3周组围生儿不良结局发生率与持续时间小于3周组有显著性差异（P＜0.05)；有、无NST基线变异消失组的围生儿不良结局发生率有极显著性差异（P＜0.01)。结论 血清转氨酶水平、皮肤瘙痒持续时间及NST基线变异是否消失是预示围生儿不良结局的相关指标。     

双胎妊娠围生儿预后相关因素分析

目的　探讨双胎妊娠新生儿窒息、围生儿死亡的相关因素。方法　回顾分析 2 5 5例双胎妊娠新生儿Apgar评分、新生儿窒息、围生儿死亡与孕周、新生儿体重、分娩方式的关系。结果　双胎妊娠孕 37～ 39+ 6w组Apgar评分最高、新生儿窒息率最低 ,≥ 2 5 0 0g组Apgar评分最高 ,新生儿窒息率、围生儿死亡率最低。孕周、新生儿体重 4组比较差异均有非常显著性(P <0 0 1)。剖宫产组比阴道分娩组Apgar评分高 ,新生儿窒息率、围生儿死亡率均低 ,2组比较Apgar评分、围生儿死亡率差异无显著性 (P >0 0 5 )。 2组比较新生儿窒息率差异有非常显著性 (P <0 0 1)。结论　双胎妊娠估计每个胎儿体重≥ 2 5 0 0g时 ,宜选择 37～ 39+ 6w终止妊娠为宜。加强孕期、围生期保健 ,积极防治各种并发症 ,适当放宽剖宫产指征 ,避免早产 ,减少低体重儿出生 ,是降低双胎围生儿死亡率、改善其预后的重要措施。     

单胎初产臀位围产儿预后相关因素分析

目的 探讨臀位新生儿窒息、围产儿死亡的相关因素。方法 回顾分析４７７例单胎初产臀位新生儿Ａpgar评分与孕周、体重、先露类型、分娩方式的关系。结果 臀位早产儿、过期儿、体重〈２kg及阴道分娩的臀位新生儿容易发生窒息（Ｐ〈０．００５,Ｐ〈０．０１）。体重≥２０００g４组间Ａpgar评分较无显著性差异（Ｐ〉０．０５）。结论 臀位选择 在３７～４１＾＋６孕周,估计新生儿体重≥２０００g时分娩较合适;及早发现足先露、     

Residual curarization in the neonate after Caesarean section

The transplacental transfer and the neonatal effects of atracurium 0.3 mg.kg-1 (ED95) were compared with those of d-tubocurarine at the usual clinical dose of 0.3 mg.kg-1 (ED90) in 46 patients undergoing elective Caesarean section. The atracurium group (25 patients) was similar to the d-tubocurarine group (21 patients) as far as age, parity and time intervals between precurarization, induction, skin incision, muscle relaxant administration, hysterotomy and birth. The transplacental transfer of atracurium was lower than that of d-tubocurarine, with a feto-maternal ratio of 9 +/- 3% for atracurium and 12 +/- 5% for d-tubocurarine (P less than 0.05). The transplacental transfer of laudanosine was low at 14 +/- 5%, with blood levels of 0.101 +/- 0.032 microM.L-1 in the umbilical vein. Newborns in the two groups were comparable in terms of Apgar scores at one, five and ten minutes, as well as for NACS scores (neurological and adaptive capacity scoring test) at two and 24 hours after birth. However, at 15 min after birth, only 55% of newborns in whom the mothers received atracurium had a normal NACS score (greater than or equal to 35/40) compared with 83% of newborns in whom the mothers received d-tubocurarine (P less than 0.05). Further analysis of the five variables related to active muscle tone revealed that the modal score for active extension of the neck of newborns from the atracurium group was lower than for newborns from the d-tubocurarine group (P less than 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)     

新生儿窒息综合评分法的临床研究

探讨新生儿窒息的评分方法，为新生儿窒息的诊断提供可靠依据。方法随机选择100例正常儿和138例窒息儿作为研究对象。在Apgar评分基础上，经反复筛选提出9项参数作为新生儿窒息综合评分的指标。结果新生儿窒息综合评分的指标分别为呼吸（R）、心率（HR）、肤色（SC）、血氧饱和度（SAT）、血氧分压（PaCO2）．二氧化碳分压（PaO2）、脐血pH值（UB－pH）．无创血压（N－BP）及胎儿监护（CTG）等。初评方案Ⅰ由R、P、SC、SAT、CTG和UB－pH组成，初评方案Ⅱ由R、P、SC、CTG、PaO2和PaCO2组成．复评方案由pH、PaO2、PaCO2、SaO2、N－BP和Silverman呼吸评分组成。Apgar评分正常的新生儿采用初评方案Ⅰ、Ⅱ评价，分别有5％、8％的新生儿存在轻度窒息。Apgar评分属于窒息者，采用初评方案Ⅰ、Ⅱ评分均正常者4例，初评方案Ⅰ为正常者6例，初评方案Ⅱ为正常者8例。结论采用Apgar评分诊断新生儿窒息存在假阳性和假阴性。采用初评方案Ⅰ诊断新生儿窒息具有简便、快速、准确、重复性好等优点。     

可行走分娩镇痛应用于潜伏期的临床研究

目的评价可行走分娩镇痛在潜伏期应用的临床效果。研究宫口开张不同大小应用分娩镇痛后的产程进展，对子宫收缩力的影响及新生儿Apgar评分情况。方法确认已临产无内科合并症的初产妇共75例，随机分为三组。Ⅰ组：宫口开张1cm左右；组：宫口开张2～3cm；Ⅲ组为正常对照组未采用分娩镇痛。观察镇痛起效时间、子宫收缩力的变化、总产程、产后出血量、分娩结局及新生儿Apgar评分。结果Ⅰ组与Ⅲ组比较总产程差异无统计学意义。Ⅰ组与Ⅱ组第一产程比较时间延长，差异有统计学意义（P〈0．05），Ⅱ组与Ⅲ组比较子宫收缩力无明显降低，第一产程中Ⅰ组与Ⅲ组比较子宫收缩力显著降低，P（0．05，Ⅰ组催产素使用率为100％。三组间产后出血、新生儿Apgar评分各组间差异无统计学意义。结论舒芬太尼合并低浓度的罗哌卡因引导下无痛分娩，从潜伏期应用，有明显的分娩镇痛作用，不增加产后出血量，对新生儿的Apgar评分无影响。     

The Surgical Apgar Score predicts outcomes of emergency abdominal surgeries both in fit and frail older patients

The Surgical Apgar Score (SAS) is a simple and rapid scoring system predicting postoperative mortality and morbidity. However, it remains unknown whether it might be useful in fit and frail older patients undergoing abdominal emergency surgery.MethodsConsecutive patients ≥65 years, needing emergency abdominal surgery were enrolled in this prospective study. Additionally to the SAS, the G8 screening score was used to determine the frailty status. The logistic regression analysis was conducted investigating the association between the scores and 30-day postoperative outcomes.ResultsThe study sample comprised 315 older patients (165 female, 150 male) with a median age of 77 (range 65–100) years old. The prevalence of frailty was 60.3%. The most frequent surgical indications were acute cholecystitis, followed by ileus, complicated diverticulitis, ulcer perforation, complication of gastric cancer and other causes. The decreasing SAS was significantly associated with the increasing likelihood of both 30-day postoperative major complications (p < 0.01) and death (p < 0.01) both in fit and frail older patients. Multivariate analyses have identified the G8, frailty screening test, and the SAS score as independent factors that predict postoperative adverse events. The model combining both scores increased the discriminatory ability for 30-day postoperative major morbidity and mortality.ConclusionThe SAS confirmed to be a simple and powerful predictor of 30-day postoperative morbidity and mortality both in fit and frail older patients undergoing emergency abdominal surgery. The department allocation algorithm based of the combination of the G8 and the SAS may be considered as an option to improve the outcomes of older patients undergoing abdominal emergency surgery.     

瑞芬太尼在全身麻醉下子宫下段剖宫产中的运用

目的 观察瑞芬太尼对全身麻醉下子宫下段剖宫产中产妇及新生儿的影响.方法 足月妊娠剖宫产40例,分为瑞芬太尼全麻组20例(A组)和氯胺酮全麻组20例(B组),观察产妇血流动力学的变化,胎儿娩出后1、5 min Apgar评分.结果 A组产妇血流动力学指标较B组平稳,两组插管后l min SBP、DBP、HR值降低,而插管后5 min基本恢复正常.诱导前SBP、DBP、HR值组间比较差异无统计学意义(P＞0.05),两组诱导后,SBP、DBP、HR值插管后1 min分别为(120.8±19.6 mm Hg、80.6±11.2 mm Hg、98.1±17.1 bpm),(128.1±17.5 mm Hg、98.9±13.8 mm Hg、108.7±20.7 bpm)插管后5 min分别为(98.3±24.7 mm Hg、75.3±13.8 mm Hg、79.9±22.6 bpm),(121.5±16.2 mm Hg、88.6±13.7 mmHg、110.5±17.4 bpm)比较差异有统计学意义(P＜0.05).A组Apgar评分1 min、Apgar评分5min为(9.5±0.8)分、(9.9±0.1)分,B组为(9.5±0.7)分、(10.0±0.0)分,比较差异无统计学意义(P＞0.05).结论 瑞芬太尼用于剖宫产术全身麻醉诱导,产妇血流动力学稳定,对新生儿无明显影响.     

Accurate prediction of hypoxic-ischaemic encephalopathy at delivery: a cohort study

Objective: Hypoxic-ischaemic encephalopathy (HIE) is a major acute neurologic manifestation of perinatal asphyxia associated with significant mortality and morbidity. The study aimed to develop a simple, accurate method of predicting HIE at delivery. Methods: Between January 2003 and December 2009, all HIE cases were identified from the 38,404 deliveries at a single tertiary centre. Receiver operating curve (ROC) analysis and multivariate logistic regression assessed the ability of clinical and biochemical assessments to predict HIE. Results: Sixty neonates met the HIE criteria: 39 were moderate-severe HIE. Univariate analyses identified clinical neonatal markers (Apgar scores and neonatal resuscitation level) to be better HIE predictors than biochemical markers (umbilical artery pH, base excess and lactate values). Multivariable models using two to four predictors had areas under ROC curves up to 0.98, sensitivities up to 93% and specificities up to 99%. For moderate-severe HIE, the most effective predictor was neonatal resuscitation level and arterial lactate (ROC 0.98, sensitivity 85%, specificity 99%). Conclusion: The combination of umbilical arterial lactate and neonatal resuscitation level provides a rapid and accurate method of predicting moderate-severe HIE that can identify neonates at birth that may benefit from tertiary care and neuroprotective therapies.