Single Euploid Embryo Transfer Outcomes After Uterine Septum Resection

STUDY OBJECTIVE

To study pregnancy outcomes after single euploid embryo transfer (SEET) in patients who underwent prior uterine septum resection to those with uteri of normal contour, without Müllerian anomalies or uterine abnormalities including polyps or fibroids, and without a history of prior uterine surgeries.

DESIGN

Retrospective cohort study.

SETTING

Single academic affiliated center.

PATIENTS

60 cycles of patients with prior hysteroscopic uterine septum resection who underwent an autologous SEET between 2012 and 2020 were used as the investigational cohort. A 3:1 ratio propensity score matched control cohort of 180 single euploid embryo transfer cycles from patients without a history of uterine septa were used as the control group.

INTERVENTIONS

No interventions administered.

MEASUREMENTS AND MAIN RESULTS

Pregnancy, clinical pregnancy loss, ongoing clinical pregnancy, and live birth rates in patients with a history of uterine septum resection compared with matched patients without Müllerian anomalies or uterine surgeries. Patients with a prior uterine septum had significantly lower rates of chemical pregnancy (58.33% vs 77.2%, p = .004), implantation (41.67% vs 65.6%, p = .001), and live birth (33.33% vs 57.8%, p = .001) per transfer. No statistical difference in clinical pregnancy loss rates was found when comparing septum patients with controls (8.33% vs 7.8%, p = .89).

CONCLUSION

Patients with a history of hysteroscopic resection who undergo in vitro fertilization are more susceptible to suboptimal clinical outcomes compared with patients with normal uteri. Early pregnancy loss rates in patients with a uterine septum are higher than in those without; however, after resection, the rates are comparable. Patients born with septate uteri require assessment of surgical intervention prior to SEET, and to optimize their reproductive outcomes.

Hysteroscopic Metroplasty Using Holmium: YAG Laser for Treatment of Septate Uterus

STUDY OBJECTIVE

To demonstrate the safety, efficacy, and ease of hysteroscopic metroplasty using holmium:YAG (Ho:YAG) laser for treatment of septate uterus.

DESIGN

Stepwise demonstration of surgical technique with narrated video footage.

SETTING

Septate uterus is the most common type of uterine anomaly. The incidence of uterine septum in women presenting with infertility and recurrent abortions is 15.4% [1,2]. Hysteroscopic septal incision is associated with improvement in live-birth rate in these women [3]. Hysteroscopic metroplasty for septate uterus can be done with the use of scissors and energy sources such as monopolar and bipolar electrosurgery and lasers. Ho:YAG laser is commonly used by urologists for various surgeries because of its "Swiss Army Knife" action of cutting, coagulation, and vaporization [4]. Ho:YAG laser is known for its precision. It causes lesser depth of tissue injury and necrosis and minimal collateral thermal damage compared with the electrosurgical devices and other lasers used for hysteroscopic surgery [5-8]. This is advantageous in hysteroscopic metroplasty given that it reduces the risk of uterine perforation during surgery and hence uterine rupture in the subsequent pregnancy. Reduced collateral damage to the surrounding endometrium helps promote early endometrial healing and prevent postoperative intrauterine adhesions. A 28-year-old patient with history of 2 spontaneous abortions came to our hospital for investigations. 3D transvaginal sonography of the patient showed presence of partial septate uterus with a fundal indentation of 1.5 cm (Supplemental video 1).

INTERVENTION

Diagnostic hysteroscopy followed by septal incision using Ho: YAG laser was planned. We used a 2.9 mm BETTOCCHI Hysteroscope (Karl Storz SE & Co.) with a 5 mm operative sheath. Normal saline was used as the distending medium and the intrauterine pressure was maintained at 80 to 100 mm Hg. The procedure was done under total intravenous anesthesia using propofol injection. Vaginoscopic entry into the uterus (without any cervical dilatation) showed evidence of a partial uterine septum with tubal ostia on either side of the septum. A 400 micron quartz fiber was passed through a laser guide into the 5-Fr working channel of the operative hysteroscope. Ho:YAG laser (Auriga XL 50-Watt, Boston Scientific) with power settings of 15 watts (1500 mJ energy at 10 Hz) was used. Incision of the septum was started at the apex of the septum in the midline and continued in a horizontal manner from side to side toward the base (Supplemental video 2). Incision of the septum is continued till the tip of the hysteroscope can move freely from one ostium to the other (Supplemental video 3). The operative time was 12 minutes. There were no intra- or postoperative complications. Postoperative estrogen therapy was given for 2 months in the form of estradiol valerate 2 mg (tablet, Progynova, Zydus Cadila) 12 hourly orally for 25 days and medroxyprogesterone acetate 10 mg (tablet, Meprate, Serum Institute of India, Ltd) 12 hourly orally added in the last 5 days [9]. 3D transvaginal ultrasound was done on day 8 of menses. It showed a triangular uterine cavity with a very small fundal indentation of 0.37 cm. A second look hysteroscopy that was done on day 9 of menses showed an uterine cavity of good shape and size [10]. Few fundal adhesions were seen and they were incised using Ho:YAG laser. The patient conceived 5 months after the primary surgery and delivered by cesarean section at 38 weeks, giving birth to a healthy baby of 2860 grams. There were no complications during her pregnancy and delivery. A comparative study is essential to prove its advantages over other energy sources for this surgery.

CONCLUSION

Hysteroscopic metroplasty using Ho:YAG laser for treatment of septate uterus is a simple, precise, safe, and effective procedure. VIDEO ABSTRACT.

Effects of hysteroscopic septum incision versus expectant management on IVF outcomes in women with complete septate uterus: a retrospective study

OBJECTIVE

This retrospective study aimed to assess the impact of hysteroscopic septum incision on in vitro fertilization (IVF) outcomes among infertile women diagnosed with a complete septate uterus and no history of recurrent pregnancy loss.

METHODS

The study was conducted at a tertiary reproductive center affiliated with a university hospital and involved 78 women with a complete septate uterus. Among them, 34 women underwent hysteroscopic septum incision, while 44 women opted for expectant management. The primary outcome measure was the live birth rate, while secondary outcomes included clinical pregnancy rate, preterm birth rate, miscarriage rate, and ongoing pregnancy rate.

RESULTS

Women who underwent hysteroscopic septum incision demonstrated a comparable likelihood of achieving a live birth compared to those managed expectantly (25% vs. 25%, Relative Risk (RR): 1.000, 95% Confidence Interval (CI): 0.822 to 1.216). No preterm births occurred in either group. The clinical pregnancy rate, ongoing pregnancy rate, and miscarriage rate showed no significant differences between the surgical group and the expectant management group. Subgroup analyses based on the type of embryo transferred also revealed no significant differences in outcomes.

CONCLUSIONS

Hysteroscopic septum incision does not appear to yield improved IVF outcomes compared to expectant management in infertile women with a complete septate uterus and no history of recurrent pregnancy loss.

Fertility, pregnancy and perioperative outcomes after operative hysteroscopy for uterine septum: a network meta-analysis

INTRODUCTION

Septate uterus is a congenital malformation associated with adverse reproductive and pregnancy outcomes. It remains controversial whether hysteroscopic septoplasty should be recommended for the treatment of septate uterus, and it is also unclear if different hysteroscopic methods have more favorable outcomes. This study aims to compare the available hysteroscopic techniques of septoplasty for fertility, reproductive, and perioperative outcomes.

METHODS

This systematic review and meta-analysis was conducted following PRISMA guidelines. We searched Medline, Scopus, and Cochrane databases up to April 2023 without language restrictions. Eligible studies had to compare two or more different methods of hysteroscopic septoplasty in women with septate uterus and report on fertility and pregnancy outcomes after a follow-up. Perioperative outcomes were also examined. Data extraction was performed by two independent reviewers using a standardized form. Risk of bias was assessed using the Newcastle-Ottawa Quality Assessment Form and Revised Cochrane risk-of-bias tool (RoB 2).

RESULTS

Out of 561 studies identified, 9 were included in the systematic review and meta-analysis. The comparison of different hysteroscopic septoplasty techniques based on the energy used showed higher pregnancy rates after mechanical septoplasty in comparison to electrosurgery, while miscarriage and live birth rates were comparable. Laser vs. electrosurgery and mechanical techniques of septoplasty had comparable pregnancy, miscarriage, and live birth rates. The network meta-analysis after comparing every different method used showed significantly higher clinical pregnancy rate in scissor group in comparison to resectoscope. No significant differences were found among the techniques regarding miscarriage rate and live birth rate.

CONCLUSION

In summary, this systematic review and network meta-analysis suggests that hysteroscopic septoplasty with scissors is associated with higher pregnancy rates compared to resectoscope. However, the limited evidence available and small sample sizes in the included studies indicate that these findings should be interpreted with caution. Further studies are required to determine the effectiveness of various hysteroscopic techniques and guide clinical decision-making in the management of this condition.

Comparison of clinical outcomes and second-look hysteroscopy of the complete and incomplete septate uterus after hysteroscopic septoplasty

PURPOSE

Septate uterus is the most common congenital uterine malformation. This retrospective cohort study compared clinical outcomes and second-look hysteroscopy findings in patients with complete and incomplete septate uteri after septoplasty.

METHODS

We reviewed the medical records of patients with a septate uterus who underwent hysteroscopic septoplasty and second-look hysteroscopy at the West China Second University Hospital between September 2013 and September 2021. Information regarding pregnancy outcomes was collected through telephone interviews. The independent samples t-test, Mann-Whitney U test, Pearson's chi-square test, and Fisher's exact test were used to explore the differences between the complete and incomplete septate uterus groups.

RESULTS

A total of 64 patients were enrolled in this study. There was no significant difference in intrauterine adhesion (IUA) rates (16.7% and 32.1%), pregnancy rates (44.1% and 42.9%), term delivery rates (35.3% and 32.1%), premature delivery rates (2.9% and 0), placenta previa rates (2.9% and 3.6%), placenta implantation/adhesion rates (5.9% and 3.6%), and premature rupture of membranes rates (2.9% and 0) between the complete and the incomplete group after hysteroscopic septoplasty (P > 0.05). Endometrial polyps in the septate uterus were common, with an incidence of 33.3% and 25% in the complete and incomplete groups, respectively (P > 0.05).

CONCLUSION

The pregnancy outcomes of complete and incomplete septate uteri after hysteroscopic septoplasty were similar. There was no statistical difference in IUAs after surgery. Different treatment strategies may not be required for complete or incomplete septate uteri.

Metroplasty increases the take-home baby rate by reducing pregnancy loss without changing the chance of conception in women with septate uterus: a retrospective, single-center, observational study

BACKGROUND

Although abdominal or hysteroscopic metroplasty for septate uterus is considered to reduce pregnancy loss and increase the take-home baby (THB) rate in women with a history of recurrent pregnancy loss, there exists an inherent risk of impaired fertility. This study aimed to clarify the reproductive outcomes of women with septate uterus who underwent abdominal and hysteroscopic metroplasty in a single center.

METHODS

This retrospective observational study enrolled 27 women who underwent metroplasty between 2007 and 2019. The analysis included women with septate uterus [European Society of Human Reproduction and Embryology (ESHRE)/European Society for Gynaecological Endoscopy (ESGE) type U2)] or septate-bicornuate uterus (ESHRE/ESGE type U3b) who underwent either abdominal or hysteroscopic metroplasty. Women who did not have an immediate desire to conceive were excluded from the analysis. As a rule, we recommended pregnancy without surgery for women who had not experienced repeated pregnancy loss. Abdominal metroplasty (ABM) was performed using the modified Tompkins' method and hysteroscopic metroplasty was performed using hysteroscopic transcervical resection of the septum [transcervical metroplasty (TCM)]. The conception ratio was calculated as the number of women who achieved ≥ 1 conception/total number of women, the pregnancy loss ratio was calculated as the number of women who experienced ≥ 1 pregnancy loss/the number of women who conceived, and the THB ratio was calculated as the number of women who achieved ≥ 1 THB/total number of women.

RESULTS

Seventeen women underwent ABM and 10 women underwent TCM. Thirty-three conceptions and 26 babies were taken home after surgery. ABM did not change the ≥ 1 conception ratio (76% vs. 83% before and after surgery, respectively; RR = 1.08, p = 0.80). Meanwhile, ABM decreased the ≥ 1 pregnancy loss ratio (100% vs. 36%, RR = 0.36, p < 0.001) and increased the ≥ 1 THB ratio (12% vs. 71%, RR = 6.00, p < 0.01). Similarly, TCM did not change the ≥ 1 conception ratio, decreased the ≥ 1 pregnancy loss ratio, and increased the ≥ 1 THB ratio.

CONCLUSIONS

Both abdominal and hysteroscopic metroplasty for septate uterus increased the THB rate by preventing pregnancy loss without affecting the chance of pregnancy.

TRIAL REGISTRATION

Not applicable.

Uterine Septum and Other Müllerian Anomalies in a Recurrent Pregnancy Loss Population: Impact on Reproductive Outcomes

STUDY OBJECTIVE

To study the impact of Müllerian anomalies on reproductive outcomes in a recurrent pregnancy loss (RPL) population and to evaluate the effect of surgical correction of uterine septum on the odds of achieving live birth in RPL patients with a septate uterus.

DESIGN

A retrospective cohort study.

SETTING

A specialized RPL clinic at a tertiary center.

PATIENTS

RPL patients with ≥ 2 pregnancy losses before 20 weeks' gestation who attended a specialized RPL clinic.

INTERVENTION

We aimed to assess the association between a possible risk factor (Müllerian anomalies) and reproductive outcomes and that between having surgery for septate uterus and achieving a live birth.

MEASUREMENTS AND MAIN RESULTS

The primary outcome is live birth rate in RPL patients with Müllerian anomalies compared with those without; secondary outcome measures include rates of full-term live birth, preterm live birth, first and second trimester pregnancy loss, and stillbirth. After adjusting for patient age at the initial RPL visit, the number of pregnancy losses, and the presence of any other abnormal RPL investigation, the odds of achieving live birth were on average 49.4% lower for patients with a septate uterus than those without Müllerian anomalies (odds ratio, 0.51; 95% confidence interval, 0.30-0.86) in the studied cohort (n = 377). A subanalysis of 72 patients with septate uterus demonstrated a higher likelihood of live birth in those who underwent septum resection (46/72; 63.9%) than those who elected to go for expectant management (26/72; 36.1%), yet this study was underpowered to establish a significant difference (52.2% vs 34.6%; p = .22).

CONCLUSION

In RPL patients, having a septate uterus significantly decreased the chances of achieving live birth. Patients with septate uterus who received hysteroscopic septum division had a higher tendency to achieve more live births than those who elected expectant management. However, our study was underpowered to detect a statistically significant difference.

Diagnosis and Management of an Intramyometrial Ectopic Pregnancy Within a Septate Uterus

BACKGROUND

An intramyometrial pregnancy is a rare form of ectopic pregnancy, making up an estimated 1% of all ectopic pregnancies. Previously described management options have included surgical excision in the emergency setting.

CASE

A 32-year-old woman, gravida 4 para 0, at 6 0/7 weeks of gestation by last menstrual period, was noted to have a gestational sac implanted entirely within the uterine myometrium. Ultrasonography and magnetic resonance imaging confirmed the presence of an intramyometrial ectopic pregnancy within a septate uterus. The patient's abnormal pregnancy was successfully treated with multidose methotrexate.

CONCLUSION

Intramyometrial pregnancy is a rare entity that should be considered when it is suggested by ultrasonography or if an intrauterine pregnancy is surgically inaccessible from the endometrial cavity. In a stable patient, multidose systemic methotrexate may be a feasible management strategy.

Hysteroscopic Fenestration with Precise Incision of the Cavity Septum: A Novel Minimally Invasive Surgery of Complete Septate Uterus with Double Cervix

STUDY OBJECTIVE

This study aimed to develop and describe a novel surgical procedure that involves hysteroscopic fenestration with precise incision of the complete uterine septum and double cervix preservation after magnetic resonance imaging (MRI) evaluation in patients and to evaluate its efficacy.

DESIGN

A prospective consecutive clinical study.

SETTING

A university teaching hospital.

PATIENTS

Twenty-four patients with complete septate uterus and double cervix.

INTERVENTIONS

Three-dimensional reconstruction of uterus was performed with pelvic MRI and three-dimensional SPACE sequence scanning. Hysteroscopic fenestration with precise incision of the cavity septum and double cervix preservation was performed in patients. Three months after operation, follow-up pelvic MRI and second-look hysteroscopy were performed conventionally.

MEASUREMENTS AND MAIN RESULTS

Operating time, blood loss, operative complications, MRI and hysteroscopic changes of uterus, symptoms improvement, and reproductive outcomes were assessed. The surgery was successfully completed without any intraoperative complications in all patients. Operating time was 21.71 ± 8.28 minutes (range, 10-40 minutes) and blood loss was 9.92 ± 7.14 mL (range, 5-30 mL). Postoperative MRI showed the uterine anteroposterior diameter (3.66 cm vs 3.92 cm; p <.05) was increased. Postoperative MRI and the second-look hysteroscopy showed the cavity shape and uterine volume were expanded to the normal. Symptoms of dysmenorrhea, abnormal uterine bleeding, and dyspareunia were ameliorated after the surgery in 70% of patients (7 of 10), 60% of patients (3 of 5), and 1 patient, respectively. The preoperative spontaneous abortion rate was 80% (4 of 5) and the postoperative spontaneous abortion rate was 11.11% (1 of 9). After the surgery, there were 2 ongoing pregnancies and 6 pregnancies ended in term births. Two live births were delivered by cesarean section and 4 by vaginal delivery without cervical incompetence during pregnancy.

CONCLUSIONS

Hysteroscopic fenestration with precise incision of the uterine septum and double cervix preservation is an effective surgical procedure.

Aggressive Cervical Dilation Exploits Potential Weakness in the Septum of Duplicated Cervix during Hysteroscopic Cervix-preserving Metroplasty of Complete Septate Uterus: A Cohort Study

STUDY OBJECTIVE

To evaluate whether aggressive cervical dilation is effective for creating the initial perforation between noncommunicating cavities of the complete septate uterus (CSU), which serves as the first step of hysteroscopic cervix-preserving metroplasty (CPM).

DESIGN

A retrospective cohort.

SETTING

A tertiary referral center.

PATIENTS

Fifty-three patients with CSU were diagnosed using vaginal examinations, combined two- and three-dimensional vaginal ultrasounds, and office-based hysteroscopies.

INTERVENTIONS

Patients who had received hysteroscopic CPM with the initial perforation created by aggressive cervical dilation or by the traditional method of bougie-guided incisions were compared.

MEASUREMENTS AND MAIN RESULTS

Of the 53 patients with CSU, 44 patients received hysteroscopic CPM that required the creation of a perforation. Patients who received aggressive cervical dilation for creation of the perforation had nonsignificantly shorter surgical times (33.5 minutes, 95% confidence interval [CI], 28.4-38.6 vs 48.7 minutes, 95% CI, 28.2-71.3, p = .099), used significantly lower volumes of distending media (3.6 liters, 95% CI, 3.1-4.1 vs 6.8 liters, 95% CI, 4.2-9.3, p <.001), and had higher success rates (84.4%, 95% CI, 67.2-94.7 vs 50.0%, 95% CI, 21.1-78.9, p = .019). The sites of perforation all occurred on the endocervical septum and were generally fibrous and avascular.

CONCLUSION

We present a novel, effective method for creating the initial perforation in hysteroscopic CPM. The success may be because of the existence of a potential weakness in the septum of the duplicated cervix, which spontaneously tears upon aggressive mechanical dilation. The method forgoes the risks associated with sharp incisions based on potentially unreliable cues and may greatly simplify the procedure.

Step-by-Step Hysteroscopic Treatment of Complete Uterine Septum Associated or Not with Cervical Anomalies

STUDY OBJECTIVE

To demonstrate our hysteroscopic technique using the mini-resectoscope for the treatment of complete uterine septum with or without cervical anomalies.

DESIGN

A step-by-step video demonstration of the technique with the use of an educational video.

SETTINGS

We present 3 patients diagnosed as having complete uterine septum (U2b according to the ESHRE/ESGE classification) with or without cervical anomalies (C0, normal cervix; C1, septate cervix; C2, double "normal" cervix"), 2 of them with a longitudinal vaginal septum (V1). The first case is a 33-year-old woman with history of primary infertility diagnosed as having a complete uterine septum with normal cervix (class U2bC0V0 according to the ESHRE/ESGE classification). Case 2 is a 34-year-old woman with infertility and abnormal uterine bleeding, diagnosed as having complete uterine and cervical septum and a partial nonobstructive vaginal septum (class U2bC1V1). Case 3 is a 28-year-old woman with infertility and dyspareunia, diagnosed as having a complete uterine septum, double "normal" cervix, and nonobstructive longitudinal vaginal septum (class U2bC2V1) Still 3. The procedures were performed in a tertiary care university hospital.

INTERVENTION

The 3 procedures were performed in the operative room using a 15 Fr continuous flow mini-resectoscope and bipolar energy with the patient under general anesthesia Still 1 and Still 2. No complications were encountered in any of the 3 cases. After all procedures, a gel based on hyaluronic acid was applied to minimize postoperative adhesion formation. Patients were discharged home the same day of the procedure after a short period of observation.

CONCLUSION

Hysteroscopic treatment of patients with uterine septa associated or not with cervical anomalies using miniaturized instruments is a feasible and effective option for the management of patients with these complex müllerian anomalies.

A fetus of partial urorectal septum malformation sequence characterized by complete septate uterus: A case report

RATIONALE

Urorectal septum malformation sequence (URSMS) is an extremely uncommon anomaly characterized by imperforate anus accompanied by multiple genitourinary malformations. Here, we report a case of URSMS identified by the autopsy and classified into partial URSMS. Prenatal diagnosis is challenging for clinicians due to the difficulty of early identification of URSMS and the relative lack of specific features in ultrasound. We intend to share our experiences.

PATIENT CONCERNS

One fetus was indicated abdominal cystic structure, abdominal effusion and right renal pelvis separation (7 mm) by ultrasound at 28 + 1 week's gestation. After the pregnancy was terminated, the fetal tissues were performed to be tested by autopsy, copy number variation sequencing and whole exon sequencing.

DIAGNOSES

Based on the clinical characteristics, ultrasound, autopsy, and genetic test findings, the fetus was diagnosed with URSMS.

INTERVENTIONS

After genetic counseling, the couple opted to terminate her pregnancy.

OUTCOMES

The copy number variation results of the fetus showed a 0.48-MB duplication fragment of uncertain significance on chromosome 8p23.3, while the whole-exome sequencing revealed a SAL-LIKE 1 gene mutation. The autopsy of the fetus showed imperforate anusa, the abdominal cyst was further confirmed with complete septate uterus and the lower urethra and vagina converge formed a lumen.

LESSONS

Individuals with URSMS during the fetal period might be misdiagnosed due to atypical features of URSMS. Once structural abnormalities especially cystic mass of the futuses in the lower abdomen, URSMS should be considered.

Treatment of septate uterus

Although there is insufficient evidence supporting the link between septate uterus and infertility, there are many studies demonstrated the effect of spetal incision on pregnancy in women diagnosed with septate uterus associated with infertility. Hysteroscopic metroplasty can significantly improve the reproductive performance of those with septate uterus. Some Müllerian malformations can be healed by surgery. The accurate diagnosis and appropriate therapeutic approch are fundamental for successful treatment. Any attempt at surgical correction of uterine abnormalities must be aimed at preserving or improving reproductive function. Among congenital uterine anomalies, septate uterus is the most amenable to simple hysteroscopic treatment. The resection of the septum is performed as standard treatment worldwide.

Diagnosis of septate uterus

The septate uterus is the most common structural uterine anomalies and it is associated with the poor reproductive outcome. It is believed to be the result of the failure in resorption of the tissue connecting the 2 paramesonephric ducts prior to the 20th embryonic week. The true prevalence of uterine septum is difficult to ascertain, as many uterine septal defects are asymptomatic. The septate uterus is usually diagnosed during an infertility evaluation and affects reproductive health by impairing fertility and increasing adverse pregnancy outcomes. The variations in uterine and cervical/vaginal anomalies collectively referred to as Müllerian anomalies. No consistent gold standard for the diagnosis of Müllerian anomalies exists. The preferred diagnostic method for Müllerian anomalies is two-dimensional ultrasound, other methods such as three-dimensional ultrasound, magnetic resonance imaging, hysterosalpingo contrast sonography, hysterosalpingography, hysteroscopy, and laparoscopy are also used to improve accuracy.