Evaluation of a policy of restrictive episiotomy on the incidence of perineal tears among women with spontaneous vaginal delivery: A ten-year retrospective study

Midwives' approach to the prevention and repair of obstetric perineal trauma in Spain

AIM

Different clinical practice guidelines include recommendations on how to prevent and repair obstetric perineal trauma, as well as the use of episiotomy. To evaluate the variability in midwives' professional practices for preventing and repairing perineal trauma, as well as the professional factors that may be associated with the restrictive use of episiotomy.

DESIGN

Observational cross-sectional study.

METHODS

Three hundred five midwives completed an anonymous questionnaire developed by the authors and distributed across various midwifery scientific societies. The main outcomes measured were the frequencies of adopting specific practices related to perineal injury prevention and repair, episiotomy technique and restrictive episiotomy use (<10%). Odds ratios (OR) and adjusted odds ratios (aOR) with 95% confidence intervals were estimated.

RESULTS

Intrapartum perineal massage was not normally used by 253 (83%) of midwives, and 186 (61%) applied compresses soaked in warm water to the perineum. Regarding episiotomy, there was a great deal of variability, noting that 129 (42.3%) adopted a restrictive use of this procedure, 125 (41%) performed it between 10% and 20%, while 51 midwives (16.7%) performed it in more than 20% of cases. In addition, 165 (54.1%) midwives followed an incision angle of 60º. Concerning tears, 155 (50.8%) usually sutured first-degree tears and 273 (89.5%) always sutured second-degree tears. Midwives attending home births (aOR = 6.5; 95% CI: 2.69-15.69), working at a teaching hospital (aOR = 3.69; 95% CI: 1.39-9.84), and the ones who recently completed their professional training (aOR = 3.58; 95% CI: 1.46-8.79) were significantly more likely to adopt a restrictive use of episiotomy.

CONCLUSIONS

There is a significant variability in Spanish midwives' practices for preventing and repairing perineal tears. Moreover, the restrictive use of episiotomy is associated with midwives attending home births, working in teaching hospitals and having recent professional training.

PATIENT OR PUBLIC CONTRIBUTION

No patient or public contribution.

Promoting Respectful Maternity Care by Reducing Unnecessary Episiotomies: Experiences from Centers of Excellence for Breastfeeding in Vietnam

(1) Background: Routine episiotomy is not recommended by international guidelines; however, it occurs at a high rate in Vietnam. (2) Methods: A process to reduce unnecessary episiotomies was developed and implemented as part of the Centers of Excellence for Breastfeeding initiative, which aims to deliver high-quality breastfeeding and early essential newborn care services within a supportive policy environment. The aim of this project report is to outline the steps undertaken to reduce episiotomies, the experience in pilot hospitals, and the process towards changing policy. (3) Results: During the 14 months following the change in episiotomy policy, pilot hospital records showed no infant death or injury. Monthly monitoring data from four pilot hospitals showed that the prevalence of episiotomy was substantially lower than the average in national hospitals in Vietnam. Facilitators to reducing the episiotomy rate include the incentive of Centers of Excellence for Breastfeeding designation and supportive hospital leadership. Challenges include the ambiguity of Vietnam's national guideline on episiotomy and lack of routine monitoring on the episiotomy rate and indications. (4) Discussion: Our experience suggests that through training and routine monitoring hospitals can apply a policy of selective episiotomy and reduce the practice, particularly among multiparous women, and improve breastfeeding rates.(5) Conclusions: Sharing our experience of implementing this process and offering four areas for action will hopefully contribute to expanded use of mother-friendly, evidence-based care as policy and routine practice in Vietnam and similar settings.

Is there still an indication for episiotomy? Results from a French national database analysis

OBJECTIVE

To assess the link between mediolateral episiotomy and the occurrence of obstetrical anal sphincter injury (OASIS).

METHODS

Data were collected from the national database (PMSI; Programme de Médicalisation des Systèmes d'Information). Women between 18 and 50 years old, undergoing a vaginal delivery in France in 2018 were included. The main outcome was factors associated with a higher adjusted OASIS rate after a vaginal delivery.

RESULTS

Of 623 003 women with a vaginal delivery, 239 949 were primiparous (38.5%), 62 310 experienced mediolateral episiotomy (10.0%) and 7077 had a third- or fourth-degree perineal tear (1.14%). Risk factors for OASIS were primiparity (adjusted odds ratio [OR] 2.97), shoulder dystocia (aOR 2.57), instrumental delivery (aOR 2.81), gestational diabetes (aOR 1.20), and post-term delivery (aOR 1.53). Mediolateral episiotomy increased the occurrence of OASIS for women without an instrumental delivery, either for parous (OR 1.32, 95% confidence interval [CI] 1.07-1.62) or primiparous (OR 1.26, 95% CI 1.13-1.39) women. In contrast, episiotomy among primiparous women with episiotomy and a vacuum or forceps delivery significantly decreased the risk for OASIS (OR 0.62, 95% CI 0.56-0.67).

CONCLUSIONS

The practice of routine episiotomy should be discouraged. Selective mediolateral episiotomy should be considered with extreme caution and mainly for primiparous women during instrumental vaginal delivery. Further randomized trial may confirm such results.

Effectiveness of episiotomy to prevent OASIS in nulliparous women at term

OBJECTIVE

To assess the association between episiotomy and severe obstetric anal sphincter injury (OASIS) in nulliparous women at term according to the use of an instrument for delivery with control confounding by indication.

METHODS

This was an observational retrospective cohort study including 12 346 women from 2004 to 2020. All nulliparous women with a cephalic singleton pregnancy were included. The primary outcome was the occurrence of OASIS. Association between episiotomy and OASIS was assessed by multivariate logistic regression with adjustment for confounding factors and stratification on the use of an instrument at delivery. Propensity score matching was used to account for indication bias.

RESULTS

Among 12 346 women included, 7803 (63.2%) had an episiotomy and 4543 (36.8%) did not have an episiotomy; the rate of OASIS was similar in both groups (0.7%). After stratification on use of instrument, an association between episiotomy and OASIS was shown in the case of instrumental delivery (odds ratio [OR] 0.46, 95% confidence interval [CI] 0.26-0.80) but not if the delivery was spontaneous (OR 0.76, 95% CI 0.29-1.98). The result was similar after matching on propensity score (in the case of operative vaginal delivery: OR 0.20, 95% CI 0.10-0.75).

CONCLUSION

Episiotomy seems to be a protective factor for OASIS in nulliparous woman at term only in the case of operative vaginal delivery.

Classification and evaluation of episiotomy practices from 2004 to 2020 and association with OASIS

OBJECTIVE

To apply a new classification based on 7 clinically relevant subgroups to accurately describe episiotomy practices and evaluate the association between episiotomy and obstetrical anal sphincter injuries (OASIS) rates according to the classification's subgroups.

METHODS

Observational retrospective cohort study based on a population comprising 39487 women from 01/01/2004 to 31/12/2020 in a level III university maternity unit. The primary outcome was the overall episiotomy rate in the institution, its trend over the time as well as in each subgroup of obstetric population classification. Secondary outcome was the rate of OASIS third and fourth degree, its association with episiotomy practice.

RESULTS

The episiotomy rate decreased significantly from 43,2% to 20% in the total population. The overall OASIS rate was 0,34%, it remained significantly the same during the study period, although the association between OASIS and episiotomy was significant only in group 2 (Nulliparous with instrumental delivery) with a decrease of OASIS rate if using episiotomy (OR 0.5; 95% CI[0,3-0,8]).

CONCLUSION

The episiotomy rate can be decreased without exposing women to an increased risk of OASIS. It encourages restrictive practice of episiotomy, but episiotomy should be considered in case of nulliparous women with instrumental delivery.

Prolongation of active second stage of labor: Associated factors and perinatal outcomes

BACKGROUND

Current data does not allow to define a reasonable threshold of duration of active second stage (ASS) of labor beyond which a medical intervention should be considered. Primary objective was to analyse perinatal outcomes associated with prolonged ASS beyond 45 min. Secondarily, we analysed associated maternal, gestational, labor and delivery characteristics associated with prolonged ASS.

METHODS

We performed a monocentric retrospective study among women with vaginal delivery, a term singleton cephalic fetus, without history of cesarean section. We compared women with active second stage of labor longer than 45 min (ASS ≥45 min, group A) and women with instrumental vaginal delivery (IVD) only for failure to progress (FtP) before 45 min of pushing (group B). Primary outcome was postpartum hemorrhage (PPH). Maternal and neonatal outcomes associated with ASS ≥ 45 min were assessed with multivariable logistic regression models.

RESULTS

Prolonged ASS ≥45 min (group A, N=177) was associated with lower rate of persistent occiput posterior position (1.7 vs 9.5%, p<0.01) and of non-engaged presentation when expulsive efforts started (10.7 vs 27.4%, p<0.01), compared to IVD for FtP <45 min (group B, N=84). In group A, 52% of women had instrumental delivery. Prolonged active second stage was independently associated with lower odds of episiotomy (38.4 vs 61.9%, AOR(95%CI)=0.43[0.24-0.78]) and was not associated with PPH (5.1 vs 5.9%, AOR=1.01[0.28-3.68]), pH<7.20, 5-min Apgar score < 7 (20.2 vs 15.9%, AOR=2.00[0.89-4.48]), lactates > 6 (23.0 vs 24.3, AOR=1.45[0.68-3.07]) or transfer to neonatal intensive care unit (6.2 vs 2.4%, AOR=4.71[0.76-29.08].

DISCUSSION

Extending the duration of active second stage of labor beyond 45 min seems reasonable under rigorous surveillance of maternal and fetal wellbeing.

In women with spontaneous vaginal delivery, repair of perineal tears might be easier compared to episiotomy

INTRODUCTION AND HYPOTHESIS

To examine a common assumption that suturing of episiotomy, a straight performer-controlled incision, might be easier compared to repair of unpredictable spontaneous perineal tears.

METHODS

Data for this study were collected prospectively, as part of a randomized controlled trial examining the outcomes of episiotomy avoidance. Suturing characteristics were compared between vaginal deliveries with episiotomy vs. spontaneous perineal tears. Primary outcomes included the duration of the repair, number of suture packs used for the repair, and subjective rating of suturing difficulty (rated from 1 to 5 by practitioner performing the suturing).

RESULTS

Of 525 vaginal deliveries, episiotomy was performed in 165 (31.4%) of the cases, 59 of which (35.8%) were accompanied by additional vaginal tears. Spontaneous vaginal tears without episiotomy were noted in 272 deliveries (51.8%). Compared to spontaneous perineal tears, episiotomy performance was associated with an adverse effect on all three suturing characteristics in the overall cohort and in subgroup of non-operative deliveries. When comparing episiotomy only to second-degree tear suturing, in the subgroup of non-operative vaginal deliveries a higher rate of suturing duration < 10 min was noted in favor of spontaneous tears. However, in sub-analysis of vacuum-assisted deliveries, a benefit was noted in favor of the episiotomy-only group in terms of fewer suture packs and lower subjective difficulty.

CONCLUSIONS

In women with non-operative vaginal delivery, suturing of spontaneous perineal tears was easier and shorter compared to episiotomy repair. This might be related to the unpredictable nature of perineal tears, which might be shorter and shallower compared to the standard episiotomy incision.