Success rate of cytogenetic analysis at the time of second-trimester dilation and evacuation

Surgical termination of pregnancy for fetal anomaly: what role can an independent abortion service provider play?

Most hospitals in Great Britain only offer a medical termination of pregnancy for a fetal anomaly (TOPFA) in the second trimester. We describe the safety and acceptability of a surgical TOPFA service delivered by an independent-sector abortion provider. Non-identifiable data for women undergoing TOPFA at British Pregnancy Advisory Service from 1 January 2015 to 31 March 2016 was extracted from existing databases. Anonymous feedback was obtained using a questionnaire. Women (n = 389) were treated along a specialised care pathway within routine abortion lists. The anomalies were chromosomal (64.0%), structural (30.8%), suspected chromosomal and/or structural or unknown (5.1%). The termination method was vacuum aspiration (41.9%) or dilation and evacuation (58.1%). No complications were reported. Feedback (173 women, 122 partners) indicated care was sensitive (99.6%), supportive (100.0%), knowledgeable (99.2%), and helpful (100.0%). Most (92.1%) reported the right amount of partner involvement. All of the respondents were likely/very likely to recommend the service. A cross-sector approach safely and satisfactorily increases the choice of TOPFA methods. Impact Statement What is already known on this subject? A surgical abortion in the first and second trimesters has been demonstrated to be safe and acceptable, if not preferable, to a medical induction for most women, including those seeking a termination of pregnancy for a foetal anomaly (TOPFA). However, most hospitals in Britain only offer a medical TOPFA in the second trimester, often due to a lack of skills to provide a surgical alternative. The lack of choice of method has a negative impact on women's experiences of TOPFA care. Independent sector abortion clinics provide the majority of surgical abortions in the second trimester in Britain, and are therefore a potential site of surgical TOPFA care. What do the results of this study add? Women and NHS service providers can be reassured that when a dedicated care pathway for TOPFA is employed in the context of routine abortion provision in the independent sector, the choice of termination method can be safely and satisfactorily increased. What are the implications of these findings for clinical practice and/or further research? The main implication is the raising of awareness among NHS providers of the availability and acceptability of this model of TOFPA service delivery, so it can become an option for more women who do not want to have a medical induction. We hope that the demonstration of some women's preferences for surgical TOPFA and the safety of this option will lead to development of this service within routine abortion lists within hospital settings. Further research could include determining the reasons why women and their partners may ultimately not choose to pursue a surgical TOPFA within the independent sector abortion service and an in-depth exploration of women's experiences of being treated within this setting.

Induction of labor compared to dilation and evacuation for postmortem analysis

OBJECTIVE

This study aimed to evaluate the ability to obtain autopsy and cytogenetics after midtrimester termination.

METHODS

A retrospective cohort study of women undergoing termination, via induction or dilation and evacuation (D&E), at 16 0/7-23 6/7 weeks was performed. Exclusion criteria were elective termination, preterm labor, PPROM, and no autopsy or cytogenetic exam performed. The ability to obtain cytogenetics and autopsy as well as complications rates were compared between the two groups with Chi-square tests.

RESULTS

Of the 469 women who met the inclusion criteria, 158 had an induction and 312 had a D&E. The induction of labor group had higher mean gestational ages, p < 0.01. Successful autopsy was more likely in the induction group, 94.3%, versus D&E group, 34.7%, p = 0.01. There was no difference in ability to obtain cytogenetics between the two groups, 89.1% in the induction group, and 92.3% in D&E group, p = 0.4. There was a difference in the total complication rates between the groups, 9.8% (26) in the induction versus 6.4% (20) in the D&E group, p < 0.01; however, there was no difference in major complications.

CONCLUSIONS

Midtrimester terminations by induction were more likely to have successful autopsies when compared with D&E. The ability to obtain cytogenetics was similar regardless of termination mode.

Pathologic Examination of Fetal and Placental Tissue Obtained by Dilation and Evacuation

Context.—Dilation and evacuation (D&E) is an alternative method to induction of labor for pregnancy termination and intrauterine fetal demise, and it is the most common mode of second-trimester uterine evacuation in the United States. Many D&E specimens are examined in surgical pathology, and there is little information available in surgical pathology textbooks or the literature to assist pathologists in these examinations.

Objective.—To provide an overview of the D&E procedure, discuss related legal issues, provide guidelines for routine pathologic examination of D&E specimens, and demonstrate the importance of careful pathologic examination of D&E specimens.

Data Sources.—Case-derived material and literature review.

Conclusions.—Pathologic examination of D&E specimens has been understudied. However, the available literature and our experience support the fact that careful pathologic examination of D&E specimens can identify significant fetal and placental changes that can confirm clinical diagnoses or provide definitive diagnosis, assist in explaining the cause of intrauterine fetal demise, and identify unexpected anomalies that may provide further clues to a diagnostic syndrome or mechanism of anomaly formation.

Success rate for culture of fetal postmortem tissue is dependent on the method of pregnancy termination

OBJECTIVE

To determine the effect of different methods of pregnancy termination on the culture success rate of postmortem fetal tissue.

METHODS

In a randomized trial, umbilical cord specimens were collected in a standardized manner and culture success rates were compared according to the method of pregnancy termination.

RESULTS

There was a significantly higher culture success rate in the vaginal (90.0%) and oral misoprostol (83.0%) groups compared to the intra-amniotic injection of prostaglandin group (52.8%).

CONCLUSION

The results of our study and the very high success rate reported by others from specimens following dilatation and evacuation lead us to suggest that exposure to drugs used to induce abortion may be a more important factor in culture failure than either tissue type or time in transit.

Invasive testing for the karyotyping of mid-trimester intrauterine fetal death (IUFD): a pilot study

INTRODUCTION

Aneuploidy remains a common cause of fetal loss after the first trimester. Conventional karyotyping from fetal solid tissues post-delivery unfortunately has a poor success rate particularly where the fetus is macerated. To overcome this we obtained amniocentesis and/or chorionic villus samples from mid-trimester intrauterine fetal deaths (IUFDs) prior to medical termination of pregnancy.

SUBJECTS

Ten women with diagnosed IUFD between 12 and 24 weeks' gestation underwent amniocentesis and/or CVS performed after counselling.

RESULTS

Successful karyotypes were obtained in all pregnancies. Five of the ten pregnancies were complicated by aneuploidy (two with trisomy 21, two with trisomy 18, and one with trisomy 13).

CONCLUSION

The high rate of aneuploidy (50%) in this small cohort emphasises the need for karyotyping. A successful karyotype in all ten pregnancies demonstrates the value of offering these procedures before a termination of pregnancy. We would recommend the adoption of this approach in the management of IUFD occurring after the first trimester.