Wexner score and quality of life in women with obstetric anal sphincter injury.

INTRODUCTION AND HYPOTHESIS: Obstetric anal sphincter injury causes anal incontinence in half of the women affected. However, most symptoms are mild. The objective of this study was to evaluate the prevalence of anal incontinence and quality of life in women at long term after delivery with obstetric anal sphincter injury. We also wanted to identify a relevant cutoff level of the Wexner score (also known as the Cleveland Clinic Incontinence Score) to indicate affected quality of life in these women. METHODS: We performed a population-based questionnaire cohort study with prospective follow-up, including all women in Denmark with obstetric anal sphincter injury and one subsequent delivery between 1997 and 2005. We performed uni- and multivariate analyses and calculated the area under the ROC curve. RESULTS: In Denmark, 3885 women had an obstetric anal sphincter injury in their first delivery and a second delivery between 1997 and 2005 and no subsequent deliveries until 2010-2011. Questionnaires were sent to 3259 eligible women, and the response rate was 74.6%. In total, 2004 women could be included in the final analyses. Of these, 29.2% (n = 584) reported affected quality of life due to anal incontinence at long-term follow-up. We found that all symptoms of anal incontinence were associated with affected quality of life. The median age at follow-up was 40.3 years. The area under the ROC curve was 0.96 (95% CI 0.95-0.97) with a sensitivity of 0.94 (95% CI 0.92-0.96) and a specificity of 0.85 (95% CI 0.84-0.87) corresponding to an optimal cutoff level of the Wexner score of ≥ 2 to identify women with affected quality of life due to anal incontinence. CONCLUSIONS: In women with obstetric anal sphincter injury, 29% reported affected quality of life due to anal incontinence at long-term follow-up, and we found a low Wexner score cutoff level of ≥ 2 to identify women with affected quality of life.

Recurrent obstetric anal sphincter injury and the risk of long-term anal incontinence.

BACKGROUND: Women with an obstetric anal sphincter injury are concerned about the risk of recurrent obstetric anal sphincter injury in their second pregnancy. Existing studies have failed to clarify whether the recurrence of obstetric anal sphincter injury affects the risk of anal and fecal incontinence at long-term follow-up. OBJECTIVE: The objective of the study was to evaluate whether recurrent obstetric anal sphincter injury influenced the risk of anal and fecal incontinence more than 5 years after the second vaginal delivery. STUDY DESIGN: We performed a secondary analysis of data from a postal questionnaire study in women with obstetric anal sphincter injury in the first delivery and 1 subsequent vaginal delivery. The questionnaire was sent to all Danish women who fulfilled inclusion criteria and had 2 vaginal deliveries 1997-2005. We performed uni- and multivariable analyses to assess how recurrent obstetric anal sphincter injury affects the risk of anal incontinence. RESULTS: In 1490 women with a second vaginal delivery after a first delivery with obstetric anal sphincter injury, 106 had a recurrent obstetric anal sphincter injury. Of these, 50.0% (n = 53) reported anal incontinence compared with 37.9% (n = 525) of women without recurrent obstetric anal sphincter injury. Fecal incontinence was present in 23.6% (n = 25) of women with recurrent obstetric anal sphincter injury and in 13.2% (n = 182) of women without recurrent obstetric anal sphincter injury. After adjustment for third- or fourth-degree obstetric anal sphincter injury in the first delivery, maternal age at answering the questionnaire, birthweight of the first and second child, years since first and second delivery, and whether anal incontinence was present before the second pregnancy, the risk of flatal and fecal incontinence was still increased in patients with recurrent obstetric anal sphincter injury (adjusted odds ratio, 1.68 [95% confidence interval, 1.05-2.70), P = .03, and adjusted odds ratio, 1.98 [95% confidence interval, 1.13-3.47], P = .02, respectively). More women with recurrent obstetric anal sphincter injury reported affected the quality of life because of anal incontinence (34.9%, n = 37) compared with women without recurrent obstetric anal sphincter injury (24.2%, n = 335), although this difference did not reach statistical significance after adjustment (adjusted odds ratio, 1.53 [95% confidence interval, 0.92-2.56] P = .10). CONCLUSION: Women opting for vaginal delivery after obstetric anal sphincter injury should be informed about the risk of recurrence, which is associated with an increased risk of long-term flatal and fecal incontinence.

Anal incontinence after two vaginal deliveries without obstetric anal sphincter rupture.

PURPOSE: To evaluate prevalence and risk factors for long-term anal incontinence in women with two prior vaginal deliveries without obstetric anal sphincter injury (OASIS) and to assess the impact of anal incontinence-related symptoms on quality of life. METHODS: This is a nation-wide cross-sectional survey study. One thousand women who had a first vaginal delivery and a subsequent delivery, both without OASIS, between 1997 and 2008 in Denmark were identified in the Danish Medical Birth Registry. Women with more than two deliveries in total till 2012 were excluded at this stage. Of the 1000 women randomly identified, 763 were eligible and received a questionnaire. Maternal and obstetric data were retrieved from the national registry. RESULTS: The response rate was 58.3%. In total, 394 women were included for analysis after reviewing responses according to previously defined exclusion criteria. Median follow-up time was 9.8 years after the first delivery and 6.4 years after the second. The prevalence of flatal incontinence, fecal incontinence and fecal urgency were 11.7, 4.1, and 12.3%, respectively. Overall, 20.1% had any degree of anal incontinence and/or fecal urgency. In 6.3% these symptoms affected their quality of life. No maternal or obstetric factors including episiotomy and vacuum extraction were consistently associated with altered risk of anal incontinence in the multivariable analyses. CONCLUSIONS: Anal incontinence and fecal urgency is reported by one fifth of women with two vaginal deliveries without OASIS at long-term follow-up. Episiotomy or vacuum extraction did not alter the risk of long-term anal incontinence.

Mode of delivery after obstetric anal sphincter injury and the risk of long-term anal incontinence.

BACKGROUND: Primiparous women have an increased risk of obstetric anal sphincter injury; because most of these patients deliver again, there are major concerns about mode of delivery: the risk of recurrent obstetric anal sphincter injury and the risk of long-term symptoms of anal incontinence. Although an elective cesarean delivery protects against recurrent obstetric anal sphincter injury, it is uncertain how the second delivery affects the risk of long-term anal incontinence. OBJECTIVE: The purpose of this study was to evaluate whether the mode of delivery for a second pregnancy, after a documented obstetric anal sphincter injury at the time of first delivery, had a significant impact on the prevalence of anal and fecal incontinence in the long term. STUDY DESIGN: We performed a population-based questionnaire cohort study that evaluated anal and fecal incontinence, fecal urgency, and affected quality of life caused by anal incontinence in 1978 patients who had obstetric anal sphincter injury in the first delivery and a second vaginal (n = 1472 women; 71.9%) or elective cesarean delivery (n = 506 women; 24.7%) delivery. We performed uni- and multivariable logistic regression analyses to compare groups. RESULTS: Long-term anal incontinence was reported in 38.9% of patients (n = 573) with second vaginal compared with 53.2% (n = 269) with elective cesarean delivery. The corresponding numbers that reported anal incontinence before the second pregnancy was 29.4% for those with vaginal delivery compared with 56.2% of those with elective cesarean delivery (ie, there was a significantly larger change in the risk of anal incontinence in the group with a second vaginal delivery compared with the change in the group with elective cesarean in second delivery). However, adjusted for important maternal and obstetric characteristics, the risk of long-term anal incontinence was nonsignificantly lower in patients with elective cesarean delivery (adjusted odds ratio, 0.77; 95% confidence interval, 0.57-1.05; P = .09). Furthermore, the risk of fecal incontinence was not affected by mode of delivery in the multivariable analysis (adjusted odds ratio, 1.04; 95% confidence interval, 0.76-1.43; P = .79). Patients with persistent anal incontinence before the second pregnancy (n = 496) had an increased risk of long-term anal incontinence (adjusted odds ratio, 64.70; 95% confidence interval, 42.85-97.68; P < .001) and long-term fecal incontinence (adjusted odds ratio, 13.76, 95% confidence interval, 10.03-18.88, P<0.001) compared with patients without anal incontinence before the second pregnancy. CONCLUSION: Mode of second delivery did not significantly affect the risk of long-term anal or fecal incontinence in multivariable analyses of patients with previous obstetric anal sphincter injury in this population in which patients with anal incontinence before the second pregnancy were recommended to have an elective cesarean delivery in the subsequent delivery. Nonetheless, we found that patients with vaginal delivery had a higher risk of deterioration of anal incontinence symptoms compared with those with an elective cesarean delivery.

Modifiable risk factors of obstetric anal sphincter injury in primiparous women: a population-based cohort study.

OBJECTIVE: To determine modifiable risk factors and incidence of obstetric anal sphincter injury (OASIS) in primiparous women. STUDY DESIGN: We performed a population-based retrospective cohort study, using data from the Danish Medical Birth Registry. The population consisted of primiparous women with a vaginal delivery in the time period 2000-2010. Univariable and multivariable logistic regressions were used to determine risk factors of OASIS. Main outcome measures were incidence of OASIS in first vaginal delivery, odds ratios for possible risk factors: age, body mass index, birthweight, head circumference, gestational age, presentation, induction of labor, oxytocin augmentation, epidural, mediolateral episiotomy, vacuum extraction, forceps, shoulder dystocia, and year of delivery. RESULTS: Of 214,256 primiparous women with a vaginal delivery, 13,907 (6.5%; 95% confidence interval [CI] 6.4-6.6%) experienced an OASIS. The incidence of OASIS increased in the time period (adjusted odds ratio [aOR], 1.02; 95% CI, 1.02-1.03; P < .0001, per year). We found a protective effect of epidural analgesia (aOR, 0.84; 95% CI, 0.81-0.88; P = .0001). Vacuum extraction without episiotomy was a significant risk factor of OASIS (aOR, 2.99; 95% CI, 2.86-3.12; P < .0001), and episiotomy was protective in vacuum-assisted deliveries compared with vacuum-assisted deliveries without episiotomy (aOR, 0.60; 95% CI, 0.56-0.65; P < .0001). Birthweight was found to be an important nonmodifiable risk factor (aOR, 2.76; 95% CI, 2.62-2.90; P < .0001). CONCLUSION: Epidural analgesia in itself was protective against OASIS. Vacuum extraction increased the risk of OASIS, although mediolateral episiotomy was protective when applied in deliveries assisted by vacuum extraction.

Peripartum hysterectomy in Denmark 1995-2004.

BACKGROUND: Severe postpartum hemorrhage (PPH) is a potentially life-threatening situation that sometimes requires a hysterectomy. We examined the national incidence, risk factors, indications, outcomes and complications of peripartum hysterectomy following vaginal and caesarean delivery. METHODS: Peripartum hysterectomy was defined as a hysterectomy after birth until 1 month after delivery using the codes for hysterectomy from the NOMESCO classification (1995). National data from the period 1995-2004 were extracted from the Danish Medical Birth Register and linked to the Danish National Hospital Register followed by registration of relevant data from the medical records of all the patients. RESULTS: We found 152 hysterectomies corresponding to an incidence of 0.24/1,000 deliveries. The risk of peripartum hysterectomy increased 11-fold following caesarean compared to vaginal delivery. Placenta accrete was present in 37% of the cases and 68%. CONCLUSION: Peripartum hysterectomy has increased significantly during the last 20 years. Optimizing treatment of PPH may decrease the incidence of peripartum hysterectomy in the future.