No relationship between fear of childbirth and pregnancy-/delivery-outcome in a low-risk Dutch pregnancy cohort delivering at home or in hospital

Objective: To examine the relationship of fear of childbirth (FOC), general anxiety and depression during pregnancy and postpartum with birth complications. Methods: For this prospective cohort study 105 healthy women with low-risk pregnancies (until at least 30 weeks gestation) completed the Wijma Delivery Expectancy/Experience Questionnaire (W-DEQ) and the Hospital Anxiety and Depression Scale (HADS) at 30 weeks gestation and 6 weeks postpartum. These results were related with delivery characteristics. Results: FOC during pregnancy was not related to complications during labour and delivery. In a regression analysis, both multiparity and medical interventions were predictors for higher postpartum FOC. A positive correlation was found between FOC during pregnancy and FOC at six weeks postpartum, corrected for complications during childbirth (r = 0.45, p < 0.001). Conclusions: The birth giving process was not related to FOC during pregnancy, but the pre-partum level of FOC certainly is predictive of the level of postpartum FOC, suggesting that FOC as measured during gestation may influence the interpretation of the birth experience itself. We did find a positive relationship between both parity and medical interventions during childbirth and FOC postpartum.     

Birth setting,labour experience,and postpartum psychological distress

Objectivealthough psychosocial risk factors have been identified for postpartum depression (PPD) and perinatal posttraumatic stress disorder (PTSD), the role of labour- and birth-related factors remains unclear. The present investigation explored the impact of birth setting, subjective childbirth experience, and their interplay, on PPD and postpartum PTSD.Methodin this prospective longitudinal cohort study, three groups of women who had vaginal births at a tertiary care hospital, a birthing center, and those transferred from the birthing centre to the tertiary care hospital were compared. Participants were followed twice during pregnancy (12–14 and 32–34 weeks gestation) and twice after childbirth (1–3 and 7–9 weeks postpartum).Resultssymptoms of PPD and PTSD did not significantly differ between birth groups; however, measures of subjective childbirth experience and obstetric factors did. Moderation analyses indicated a significant interaction between pain and birth group, such that higher ratings of pain among women who were transferred was associated with greater symptoms of postpartum PTSD.Conclusion and implications for practicewomen who are transferred appear to have a unique experience that may put them at greater risk for postpartum psychological distress. It may be beneficial for care providers to help prepare women for pain management and potential unexpected complications, particularly if it is their first childbirth.     

Changes in emotions and personal goals in primiparous pregnant women during group intervention for fear of childbirth

The changes in emotions, subjective fear of childbirth, and personal goals were examined during a group intervention to treat fear of childbirth (FOC). The objective was to gain a more detailed understanding of the changes occurring during the group intervention of FOC. The changes in emotions, subjective FOC, and personal goals were studied in primiparous pregnant women with severe FOC participating in a group intervention (n = 105). The group intervention contained six sessions during pregnancy and one after childbirth. At every session, the participants filled in a questionnaire regarding their experiences of current positive and negative emotions and the subjective FOC. The participants also set and reported their personal goals in their preparation for childbirth and parenthood. The negative emotions decreased from the beginning of the intervention. The change became significant after the fourth session. The amount of positive emotions increased but became statistically significant only after the delivery. The subjective FOC decreased significantly from the beginning of the intervention. Personal goals shifted from being mainly self-related to being mostly related to parenthood. The group intervention decreased FOC and promoted changes in emotions and personal goals that foster emotional preparedness for childbirth. It seems that the decrease in FOC was made possible through gaining a better capacity to regulate emotions, especially negative emotions. As negative emotions and fear decreased, personal goals simultaneously changed in the direction known to be adaptive for the new life situation as a parent of a newborn.     

Reduction of twin pregnancy to singleton: does it improve pregnancy outcome?

Objective.?To compare pregnancy complications, obstetrical and neonatal outcome of twin pregnancies reduced to singleton, with both non-reduced twin pregnancies and singleton pregnancies.

Methods.?A retrospective case–control study was performed at the Obstetrics and Gynecology Ultrasound unit of a tertiary referral medical center. Patient's population included 32 bi-chorionic bi-amniotic twin pregnancies reduced to singleton and 35 non-reduced twin pregnancies. Thirty-six patients with singleton pregnancies comprised the second control group. Main outcome measures were rates of pregnancy complications, preterm delivery (both before 37 weeks of gestation and before 34 weeks of gestation), late abortions, intra-uterine growth retardation, cesarean section, mean birth weights, and mean gestational age at delivery.

Results.?The reduced twin pregnancies group had similar rates of total pregnancy complications, preterm deliveries, and cesarean section as non-reduced twins. Gestational age at delivery and mean birth weight were also similar to non-reduced twins and significantly different compared with singletons. Preterm delivery and late abortion incidences were significantly higher when reduction was beyond 15 weeks gestation.

Conclusions.?Reduction of twin pregnancy to singleton does not change significantly pregnancy course and outcome. Favorable obstetrical and neonatal outcomes could be achieved by performing early, first trimester reductions.     

Why Do Some Women Change Their Opinion About Childbirth Over Time?

Abstract: Background : The current investigation is a follow‐up of a study on women's memory of childbirth, which showed that 60 percent made the same assessment of their overall birth experience at 1 year after delivery as they did at 2 months postpartum, and 24 percent had became more negative and 16 percent more positive. The study purpose was to gain some understanding of what factors make some women change their assessment over time. Methods : Data from a longitudinal cohort study of 2,428 women who completed questionnaires in early pregnancy, at 2 months, and at 1 year after birth were analyzed. Two subsamples were studied: 1,451 women who said childbirth was a positive experience at 2 months and 151 who said it was a negative experience. Comparisons were made, within each sample, between those who made the same assessment at 1 year and those who had changed their view, with respect to psychosocial background, labor outcomes, infant health outcomes during first year, and experiences of intrapartum care. Results : Changing the assessment from positive to less positive, mostly to “mixed feelings,” was associated with difficult childbirth, such as painful labor and cesarean section; dissatisfaction with intrapartum care; and psychosocial problems, such as single status, depressive symptoms, and worry about the birth in early pregnancy. Changing the assessment from negative to less negative was associated with less worry about the birth in early pregnancy and a more positive experience of support by the birth‐attending midwife. Conclusions : This study supported the view that measures of satisfaction with childbirth soon after delivery may be colored by relief that labor is over and the happy birth of a baby. More negative aspects may take longer to integrate. Supportive care may have long‐term effects and may protect some women from a long‐lasting negative experience.     

Fear of childbirth before, during, and after childbirth

BACKGROUND: Only scanty research exists about the relationship between women's expectations during pregnancy and their experiences as reported during the actual process of labor and afterwards. The aims of the present study were: (1) to investigate the associations between fear of childbirth during pregnancy and postpartum and fear and pain during early active labor (phase 1: cervix dilatation 3-5 cm), and (2) to explore possible differences regarding fear of childbirth during pregnancy and postpartum between women who did or did not receive epidural analgesia during labor. Methods. Fear of childbirth was measured in 47 nulliparous women during gestation weeks 37-39 by means of the Wijma Delivery Expectancy/Experience Questionnaire (W-DEQ version A). During early active labor we measured women's fear (Delivery Fear Scale) and their experiences of pain (a pain intensity scale). Finally, fear after childbirth (W-DEQ version B) was measured two hours, two days, and five weeks after delivery. RESULTS: A positive correlation appeared between fear of childbirth during pregnancy, postpartum, and early active labor. There were no differences in fear of childbirth during late pregnancy between women who received epidural analgesia and those who did not. Postpartum fear was higher in the women who had received epidural analgesia. CONCLUSIONS: Pregnant women who fear childbirth are prone to report fear during the actual labor and postpartum. The administration of epidural analgesia is not a sufficient response to women's fear during the process of labor.     

Do Women Get Posttraumatic Stress Disorder as a Result of Childbirth? A Prospective Study of Incidence

Background: Recent research suggests that a proportion of women may develop posttraumatic stress disorder after birth. Research has not yet addressed the possibility that postpartum symptoms could be a continuation of the disorder in pregnancy. This study aimed to test the idea that some women develop posttraumatic stress disorder as a result of childbirth, and to provide an estimate of the incidence using a prospective design, which controls for the disorder in pregnancy. Method: This prospective study assessed 289 women at three time points: 36 weeks gestation and 6 weeks and 6 months postpartum. The prevalence of posttraumatic stress disorder was assessed by questionnaire at each time point, and the incidence was examined after removing women who had severe symptoms of posttraumatic stress disorder or clinical depression in pregnancy. Results: After removing women at the first time point, 2.8 percent of women fulfilled criteria for the disorder at 6 weeks postpartum and this decreased to 1.5 percent at 6 months postpartum. Conclusions: The results suggest that at least 1.5 percent of women may develop chronic posttraumatic stress disorder as a result of childbirth. It is important to increase awareness about the disorder and to give health professionals access to simple screening tools. Intervention is possible at several levels, but further research is needed to guide this intervention.     

Nausea,vomiting, and heartburn in pregnancy: a prospective look at risk,treatment, and outcome

Objective: To examine risk factors, treatment, and outcomes for nausea/vomiting (N/V) and heartburn during pregnancy. Methods: We included 2731 women from a prospective cohort study of gallbladder disease in pregnancy. Subjects completed questionnaires at enrollment, early third trimester, and 4–6 weeks postpartum. We used logistic regression to examine independent predictors of upper gastrointestinal symptoms. Results: Ninety-five percent of pregnant women experienced either heartburn and/or N/V. Independent predictors for heartburn included prepregnancy heartburn (OR 5.28, 95% CI 3.78–7.37), multigravidity, prepregnancy body mass index, and pregnancy weight gain. Independent predictors for N/V included prepregnancy N/V (OR 2.25, 95% CI 1.52–3.31), other digestive problems prepregnancy, younger age, single gestation, and carrying a female fetus. 11% of women with N/V and 47% of women with heartburn used pharmacologic therapy. Infants born to women with heartburn had significantly higher birth weights (p?=?0.03), but gestational age at delivery was not significantly different. N/V was not associated with birth weight or gestational age at delivery. 19.7% of women with heartburn during pregnancy reported postpartum heartburn. Conclusions: Heartburn and N/V are common pregnancy symptoms, particularly among women with a history of such symptoms. Neither condition appears to adversely affect the outcome of pregnancy. Pregnancy-related heartburn predisposes to early postpartum heartburn.     

Treatment of nulliparous women with severe fear of childbirth via the Internet: a feasibility study

Objective: The aim of the present study was to test the feasibility of Internet interventions among nulliparous women suffering from severe fear of childbirth (FOC) by means of an Internet-delivered therapist-supported self-help program based on cognitive behavioral therapy (ICBT).

Design: Prospective, longitudinal cohort study.

Setting: A feasibility study of an ICBT program for the treatment of severe FOC in pregnant women.

Sample: Twenty-eight Swedish-speaking nulliparous women with severe FOC recruited via a project home page from January 2012 to December 2013.Methods: The main components of the ICBT program for the treatment of severe FOC comprised psycho-education, breathing retraining, cognitive restructuring, imaginary exposure, in vivo exposure and relapse prevention. The study participants were anonymously self-recruited over the Internet, interviewed by telephone and then enrolled. All participants were offered 8 weeks of treatment via the Internet. Participants reported their homework weekly, submitted measurements of their fear and received feedback from a therapist via a secure online contact management system.

Main outcome measures: Level of FOC measured with the Wijma Delivery Expectancy/Experience Questionnaire (W-DEQ A) during screening at enrollment and weekly during the treatment (W-DEQ version A), and after the delivery (W-DEQ version B).

Results: A statistically significant (p?<?0.0005) decrease of FOC [W-DEQ sum score decreased pre to post-therapy, with a large effect size (Cohen’s d?=?0.95)].

Conclusions: The results of this feasibility study suggest that ICBT has potential in the treatment of severe FOC during pregnancy in motivated nulliparous women. The results need to be confirmed by randomized controlled studies.     

The relationship between obstetrical outcomes and alcohol use in the year prior to pregnancy

Objectives.?The purpose of this study was to examine problems related to alcohol use as reported covering the year prior to pregnancy in a general prenatal care seeking sample. The relationship of alcohol use to a number of pregnancy and birth complications (premature rupture of membrane, birthweight, weeks gestation and APGAR) was examined.

Methods.?A total of 940 prenatal care-seeking women completed the TWEAK, a brief measure of alcohol use problems during the previous year. Measures were completed by women at an average of 25 weeks gestation (SD?=?9.7) in the waiting areas of university-affiliated obstetrics clinics in the US. Pregnancy and birth complications were gathered via medical record search and completed on all cases.

Results.?Controlling for cigarette use and key demographic variables, only pre-pregnancy elevated TWEAK (≥2) was significantly and consistently related to each obstetrical outcome in multivariate analyses in the total sample. Analyses showed that pre-pregnancy TWEAK was related to PROM and lower birthweight among the sample of women (n?=?800) who reported no actual alcohol use during pregnancy.

Conclusions.?Results suggest that a brief screening for alcohol use problems may detect women either in early pregnancy or pre-conceptually, that may be at risk for potentially harmful pregnancy and birth outcomes, including women who deny prenatal alcohol use.     

Maternal mental health in the first 3-week postpartum: the impact of caregiver support and the subjective experience of childbirth – a longitudinal path model

Objective: Acute stress reactions (ASR) and postpartum depressive symptoms (PDS) are frequent after childbirth. The present study addresses the change and overlap of ASR and PDS from the 1- to 3-week postpartum and examines the interplay of caregiver support and subjective birth experience with regard to the development of ASR/PDS within a longitudinal path model. Method: A total of 219 mothers completed questionnaires about caregiver support and subjective birth experience (Salmon’s Item List) at 48–6-h postpartum. ASR and PDS were measured for 1- and 3-week postpartum. The Impact of Event Scale (IES) was used to assess ASR, and the Edinburgh Postnatal Depression Scale (EPDS) was used to assess PDS. Results: ASR was frequent 1-week postpartum (44.7%) and declined till week 3 (24.8%, p <.001), while the prevalence of PDS was continuous (14.2% week 1; 12.6% week 3; p = .380). Favorable reports of caregiver support were related to better subjective childbirth experience, which was related to lower ASR and PDS (controlled for age, mode of delivery, parity, EDA and duration of childbirth). Conclusion: High quality of intrapartum care and positive birth experiences facilitate psychological adjustment in the first 3-week postpartum.     

Self-efficacy beliefs and fear of childbirth in nulliparous women

Abstract

Objective: To explore how childbirth self-efficacy, i.e. outcome expectancy and efficacy expectancy, was associated with fear of childbirth (FOC) and how efficacy expectancy and FOC, respectively were related to socio-demographic characteristics, mental problems and preference for a caesarean section.

Methods: In this cross-sectional study, a consecutive sample of 1000 pregnant nulliparous women was sent the Wijma Delivery Expectancy Questionnaire and Childbirth Self-Efficacy Inventory. Statistical analyses were performed on data from 423 women.

Results: Outcome expectancy and efficacy expectancy correlated significantly and positively, FOC correlated significantly and negatively with both outcome expectancy and efficacy expectancy. Women with severe FOC (20.8%) had a significantly lower level of education (p?=?0.001), and had more often sought help because of mental problems (p?=?0.004). They were more likely to have low-efficacy expectancy (p?<?0.001) and to prefer a caesarean section instead of a vaginal birth (p?<?0.001).

Conclusions: Lower efficacy expectancy was associated with higher FOC while preference for a caesarean section was not. Improvement of self-efficacy could be a part of care for women with FOC during pregnancy; however, it would not be enough for fearful women who wish to have a caesarean section.     

Fathers' Coping Style,Antenatal Preparation,and Experiences of Labor and the Postpartum

Background: In recent years the trend for fathers in Western postindustrial countries to attend childbirth has increased. This study examined the interaction between fathers' information‐seeking coping predispositions and their level of attendance at antenatal classes with respect to their experiences of attending childbirth. Associations between fathers' childbirth experiences, their relationship with their baby, and level of depressive symptomatology at 6 weeks postpartum were also examined. Methods: A quantitative methodology was employed in which 78 fathers completed several questionnaires, some within 6 days of childbirth and others at 6 weeks postpartum. Results: Fathers who were characterized as high blunters (avoiders) of threat information, from antenatal classes reported that experiencing childbirth was less fulfilling than fathers with similar coping styles who did not attend classes. Fathers' reports of fulfillment and delight while attending childbirth were negatively related to their level of depressive symptomatology at 6 weeks postpartum. Levels of distress were associated with subsequent depressive symptoms, but their effect was removed when preexisting depressive symptoms were partialled out. Fathers whose children were born by cesarean delivery used significantly more negative adjectives to describe their baby at 6 weeks postpartum compared with those born by vaginal delivery. More married fathers attended antenatal classes and reported lower levels of depressive symptomatology than unmarried fathers. Conclusions: Although fathers' attendance at antenatal classes may have positive consequences for them and their partner, for some fathers, attendance at classes may be associated with less positive reports of experiencing childbirth. The way in which men experience childbirth may have some influence on their subsequent emotional well‐being.     

Outcomes of Father Involvement in Pregnancy and Birth

: To test the assumption that father involvement in pregnancy and childbirth results in more positive birth and fathering experiences, 40 primiparous couples recruited from childbirth education classes and obstetricians were studied. About two weeks before their due dates each mother was asked to rate her marital closeness and her husband's interest in children. These couples were observed for one hour in mid-labor. Then mothers and fathers were interviewed about one week after the birth. Fathers who were more involved in terms of their wives’ reports of prenatal marital closeness gave generally more positive reports of the delivery and the new baby. Fathers who were involved in terms of their wives’ estimates of their interest in children were rated by observers as interacting with their wives less during labor. (BIRTH 10:1, Spring 1983)     

Depression in pregnancy: time of screening and access to psychiatric care

Objective.?To determine the timing of screening for postpartum depression that optimizes access to psychiatric care.

Methods.?Cross-sectional evaluation of women receiving obstetric care in a community-based medical center clinic from March to July 2006, who were screened for depression at 36 weeks gestation, delivery, and 6 weeks postpartum using the Edinburgh Postnatal Depression Scale. Positive screens generated referrals for psychiatric evaluation. The rate of positive screens for depression and psychiatric follow-up at each time point was evaluated.

Results.?Of the 293 patients evaluated, the distribution of the first screen which occurred during the study period was 21% at 36 weeks, 31% at delivery, and 48% at 6 weeks postpartum. The incidence of a positive screen was 5% at 36 weeks, 16% at delivery and 14% at 6 weeks postpartum. Access to psychiatric care occurred in 33% at 36 weeks, 15% at 6 weeks postpartum and 100% at delivery (p?=?0.001).

Conclusion.?Screening for depression in the hospital after delivery improves access to psychiatric care.     

New mothers’ feelings of disappointment and failure after cesarean delivery

Background

Childbirth is an important life event and how women feel in retrospect about their first childbirth may have long‐term effects on the mother, child, and family. In this study, we investigated the association between mode of delivery at first childbirth and birth experience, using a new scale developed specifically to measure women's affective response.

Methods

This was a prospective cohort study of 3006 women who were interviewed during pregnancy and 1‐month postpartum. The First Baby Study Birth Experience Scale was used to measure the association between mode of delivery and women's postpartum feelings about their childbirth, taking into account relevant confounders, including maternal age, race, education, pregnancy intendedness, depression, social support, and maternal and newborn complications by way of linear and logistic regression models.

Results

Women who had unplanned cesarean delivery had the least positive feelings overall about their first childbirth, in comparison to those whose deliveries were spontaneous vaginal (P < .001), instrumental vaginal (P = .001), and planned cesarean (P < .001). In addition, those who delivered by unplanned cesarean were more likely to feel disappointed (adjusted odds ratio [OR] 6.21 [95% confidence interval (CI) 4.62‐8.35]) and like a failure (adjusted OR 5.09 [95% CI 3.65‐7.09]) in comparison to women who had spontaneous vaginal delivery; and less likely to feel extremely or quite a bit proud of themselves (adjusted OR 2.70 [95% CI 2.20‐3.30]).

Conclusions

Delivering by unplanned cesarean delivery adversely affects how women feel about their first childbirth in retrospect, and their self‐esteem.     

Fear of childbirth and emergency caesarean section in low-risk nulliparous women: a prospective cohort study

Abstract

Objective: To assess the association between fear of childbirth (FOC) and emergency caesarean section.

Design: A prospective cohort study of low-risk nulliparous women at term.

Setting: Nine obstetric departments in Denmark, May 2004–July 2005.

Population: A total of 2598 nulliparous women in spontaneous labor with a single fetus in cephalic presentation at term.

Methods: Self-reported FOC was assessed at 37 weeks of gestation by the Wijma Delivery Expectancy/Experience Questionnaire (W-DEQ) version A and at admission to the labor ward by the Delivery Fear Scale (DFS). Mode of delivery was recorded by the attending staff. Logistic regression analyses were used to estimate unadjusted and adjusted odds ratios (OR).

Main outcome measures: Risk of emergency caesarean section in women who feared childbirth.

Results: FOC (W-DEQ sum score ≥85 and DFS sum score ≥70) was not associated with emergency caesarean section: adjusted OR?=?0.81 (95% CI: 0.48–1.36) and OR?=?0.97 (95% CI: 0.55–1.71), respectively.

Conclusion: In this prospective observational study, women with FOC did not have an increased risk of emergency caesarean section compared to women with no such fear.     

A Negative Birth Experience: Prevalence and Risk Factors in a National Sample

Abstract: Background : A woman's dissatisfaction with the experience of labor and birth may affect her emotional well‐being and willingness to have another baby. The aim of this study was to investigate the prevalence and risk factors of a negative birth experience in a national sample. Methods : A longitudinal cohort study of 2541 women recruited from all antenatal clinics in Sweden during 3 weeks spread over 1 year was conducted. Data were collected by three questionnaires, which measured women's global experience of labor and birth 1 year after the birth, and obtained information on possible risk factors during pregnancy and 2 months after the birth. Results : Seven percent of the women had a negative birth experience. The following risk factors were found: (1) factors related to unexpected medical problems, such as emergency operative delivery, induction, augmentation of labor, and infant transfer to neonatal care; (2) factors related to the woman's social life, such as unwanted pregnancy and lack of support from partner; (3) factors related to the woman's feelings during labor, such as pain and lack of control; and (4) factors that may be easier to influence by the caregivers, such as insufficient time allocated to the woman's own questions at antenatal checkups, lack of support during labor, and administration of obstetric analgesia. Conclusions : Many risk factors were related to unexpected medical problems and participants’ social background. Of the established methods to improve women's birth experience, childbirth education and obstetric analgesia seemed to be less effective, whereas support in labor and listening to the woman's own issues may be underestimated. (BIRTH 31:1 March 2004)     

Outcome of singleton pregnancy in women ≥45 years old: a retrospective cohort study

Objective: To investigate prematurity rate in women aged ≥45 carrying a singleton pregnancy. Other maternal and neonatal outcomes are also described. Design: Retrospective cohort study. Setting: Women delivering a singleton pregnancy at a single tertiary medical center. Population: The study included all women aged 45 years and over who delivered at 20 weeks gestation or beyond over a 9-year period from May 2000 to May 2009. Methods: Women aged 45 years and over were identified. The study group was compared to a control group of women <40 years with singleton pregnancies conceived by in vitro fertilization (IVF) who delivered during the same time period. Main Outcome Measure(s): Maternal complications during pregnancy and neonatal outcome. Results: During the study period 278 women ≥45 years delivered a singleton pregnancy. The control group included 304 women. The rate of delivery before 37 weeks as well as before 32 weeks were very high in our study group (18.7 vs. 10.9%, p = 0.009 and 5.4 vs. 2.0%, p = 0.04, respectively). In multivariate analysis, older maternal age was not independently related to prematurity. Chronic hypertension (HTN) was found to be a major risk factor associated with prematurity in advanced maternal age. Conclusions: Women ≥45-years-old with a singleton pregnancy carry a higher risk of maternal and perinatal complications. Preterm birth is a significant complication in this age group and is associated with preexisting chronic HTN.     

阴道分娩97例初产妇产后尿潴留危险因素临床分析

目的：探讨经阴道分娩产后尿潴留（postpartum urinary retention,PUR）的危险因素,为降低PUR发生率、减少产后并发症提供理论依据。方法：选择天津医科大学宝坻临床学院（我院）2016年1-12月经阴道分娩PUR患者97例为观察组[A组,其中分娩镇痛者83例（A1组）,无分娩镇痛者14例（A2组）],随机选择同期经阴道分娩无尿潴留者88例为对照组[B组,其中分娩镇痛者59例（B1组）,无分娩镇痛者29例（B2组）]。记录2组患者一般信息、妊娠期合并症及妊娠期并发症、产时情况、产后出血情况及新生儿体质量,进行回顾性分析。结果：2组产妇妊娠期合并症及并发症、孕次、胎膜早破、枕左前（LOA）胎位、第三产程时间和新生儿体质量比较,差异无统计学意义（均P＞0.05）。孕周、分娩镇痛、产钳助娩、侧切、第一产程时间、第二产程时间和产后出血比较,差异有统计学意义（均P＜0.05）。发生PUR的危险因素有孕周增大（OR=1.619,95%CI：1.121～2.339）、产钳助娩（OR=4.981,95%CI：2.184～11.361）、产后出血（OR=3.429,95%CI：1.024～11.488）和侧切（OR=2.419,95%CI：1.058～5.531）。PUR危险因素的ROC曲线分析：年龄最佳临界值为26.50岁,孕周最佳临界值为40.36周,新生儿体质量最佳临界值为3 372.50 g,分娩镇痛第一产程最佳临界值为402.50 min,分娩镇痛第二产程最佳临界值为61.50 min,无分娩镇痛第一产程最佳临界值为230.00 min,无分娩镇痛第二产程最佳临界值为34.50 min。结论：对孕周、分娩镇痛、产钳助娩、侧切、第一产程时间、第二产程时间、产后出血诸因素适当干预,可减少PUR的发生。