Transvaginal administration of intraamniotic digoxin prior to dilation and evacuation

The Use of Feticidal Agents Before Dilation and Evacuation or Induction of Labor for Later Abortion

Abortion is a common medical procedure in the United States that is frequently the target of political and legal restrictions. These restrictions can negatively impact care and interfere with the patient-provider relationship. In this paper, we aim to review the historic context in which feticidal agents became more utilized in later abortion; describe current practices and protocols of using feticidal agents use for later abortion by dilation and evacuation and induction of labor; evaluate patient and provider perspectives on feticidal agent use; and propose areas of further ethical and research inquiry to characterize the use of these agents in later abortion procedures.

Drugs used to induce fetal demise prior to abortion: a systematic review

Clinicians have used feticidal agents prior to second trimester abortion for many years. Despite the widespread use of various agents to induce fetal demise, a comprehensive or systematic review of the evidence is lacking on the safety, effectiveness, and most effective routes of administration.

Objectives

To evaluate the existing drugs and routes of administration used in inducing fetal demise prior to abortion, and to determine the safety, effectiveness, and acceptability of these feticidal agents.

Methods

We searched PubMed, EMBASE, CINAHL, POPLINE, and Global Index Medicus to identify studies describing pharmacologic agents used to induce fetal demise prior to termination of pregnancy. We included randomized controlled trials and observational studies comparing digoxin, potassium chloride (KCL), and lidocaine to induce fetal demise. We included studies that evaluated the primary outcomes of safety and effectiveness, including success in achieving fetal demise, induction to expulsion time for medical abortion, dilation and evacuation time, as well as maternal side effects and complications. Two authors independently screened abstracts and full texts. One reviewer extracted data from the included studies, which was counterchecked by a second reviewer.

Results

We identified eight studies that met inclusion criteria: three randomized controlled trials, and five observational studies. A total of 4505 women received drugs to induce fetal demise at 17 to 38 weeks' gestation, including digoxin (n = 4174), KCL (n = 324), and lidocaine (n = 7). Intra-fetal digoxin was superior to intra-amniotic digoxin in achieving fetal demise (OR 3.51, 95% CI 1.60, 7.78). Intracardiac KCL 15% 2–3 mL reduced induction to expulsion time by 320 min (p <.006).

Similarly, intracardiac KCL 15% 1–3 ml reduced dilation and evacuation time from 16.1 ± 7.9 min to 12.7 ± 5 min (p < 0.001). Intracardiac lidocaine 2% 10 mL was more effective at achieving fetal demise than intracardiac KCL 6 mmol (85.7% vs. 57.9%). Intra-amniotic and intra-fetal digoxin 1 mg, as compared to no feticidal agent, led to greater pre-procedure expulsion, hospital readmission, and the presence of one or more signs of infection.

Conclusions

Evidence from included cohort studies demonstrates that digoxin, KCL, and lidocaine are all effective in inducing fetal demise. Intra-fetal administration of digoxin is superior to intra-amniotic digoxin administration. Administration of feticide using intracardiac KCL may shorten the abortion experience. Limited data from observational studies also supports an increase in maternal side effects and/or complications related to the administration of digoxin.

Implications

Intra-fetal administration of digoxin is more effective in achieving fetal demise when compared to intra-amniotic administration. There is a knowledge gap in determining the single best drug for inducing fetal demise prior to abortion. Additional research is needed to compare different feticidal agents in terms of safety and effectiveness.

Mifepristone-misoprostol versus misoprostol-alone regimen for medication abortion at ≥24 weeks' gestation

OBJECTIVE

To compare time from misoprostol initiation to fetal expulsion for mifepristone-misoprostol versus misoprostol-alone regimens of medication abortion performed at ≥24 weeks' gestation.

STUDY DESIGN

We conducted a retrospective study of medication abortion performed at ≥24 weeks' gestation between May 2016 and January 2018 at one site, comparing outcomes of patients receiving mifepristone-misoprostol versus misoprostol alone during two periods. All patients received feticidal injection and laminaria; the mifepristone-misoprostol group also received mifepristone 200 mg orally around the time of initial laminaria. Beginning 24-72 h later (depending on cervical assessment), both groups received misoprostol buccally every two hours.

RESULTS

Analyses included 257 patients in the mifepristone-misoprostol group and 152 patients in the misoprostol-alone group. Median time from misoprostol initiation to fetal expulsion was similar between groups (4.8 h vs. 4.9 h; p = 0.43). Patients in the mifepristone-misoprostol group received less misoprostol overall (median [IQR]: 800 mcg [800-1200 mcg] vs. 1200 mcg [800-1600 mcg]; p < 0.01) and fewer patients received a second round of laminaria (n = 56, 22% vs. n = 58, 33%; p < 0.01) than the misoprostol-alone group. Seven patients (2%) were transferred to a hospital for complications; this proportion did not vary by regimen.

CONCLUSIONS

Addition of mifepristone was not associated with a reduction in induction interval at ≥24 weeks. However, patients in the mifepristone-misoprostol group received a lower total dose of misoprostol and were less likely to require two days of laminaria. The clinical significance of these differences is unclear, but may have implications for patient experience. Both regimens had low rates of complications.

IMPLICATIONS

A randomized controlled trial comparing the mifepristone-misoprostol and misoprostol-alone regimens at ≥24 weeks is needed, as is evidence on patient perspectives on these regimens. Given the existing evidence, either regimen is reasonable.

[Feticide procedures in second and third trimesters terminations of pregnancy]

Performing a feticide as part of termination of late pregnancy is recommended in many countries. Feticide avoids a live birth of a severely affected premature newborn and prevents fetal pain. There are limited data on feticide procedures since only a few countries in the world authorize late termination of pregnancy. The objective of this review was to assess the most appropriate feticide procedure based on published data during the last thirty years. Administration of an initial fetal analgesia followed by a lethal lidocaine injection through the umbilical cord, under ultrasound guidance, appears to be the most effective, safe and ethical way to perform feticide. According to the current knowledge regarding the risk of fetal pain and survival of extremely preterm infants, a feticide should be discussed as early as 20-22 weeks of gestation.

No. 360-Induced Abortion: Surgical Abortion and Second Trimester Medical Methods

OBJECTIVE

This guideline reviews evidence relating to the provision of surgical induced abortion (IA) and second trimester medical abortion, including pre- and post-procedural care.

INTENDED USERS

Gynaecologists, family physicians, nurses, midwives, residents, and other health care providers who currently or intend to provide and/or teach IAs.

TARGET POPULATION

Women with an unintended or abnormal first or second trimester pregnancy.

EVIDENCE

PubMed, Medline, and the Cochrane Database were searched using the key words: first-trimester surgical abortion, second-trimester surgical abortion, second-trimester medical abortion, dilation and evacuation, induction abortion, feticide, cervical preparation, cervical dilation, abortion complications. Results were restricted to English or French systematic reviews, randomized controlled trials, clinical trials, and observational studies published from 1979 to July 2017. National and international clinical practice guidelines were consulted for review. Grey literature was not searched.

VALUES

The quality of evidence in this document was rated using the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) methodology framework. The summary of findings is available upon request.

BENEFITS, HARMS, AND/OR COSTS

IA is safe and effective. The benefits of IA outweigh the potential harms or costs. No new direct harms or costs identified with these guidelines.

A qualitative study of digoxin injection before dilation and evacuation

OBJECTIVE

We sought to qualitatively understand patients' experiences with digoxin as a step before dilation and evacuation (D&E).

STUDY DESIGN

We recruited English-speaking women from one abortion health center where digoxin is routinely used before D&E. We interviewed participants one to three weeks after the D&E about physical and emotional experiences with digoxin and understanding of its purpose. Using grounded theory, we analyzed transcripts iteratively, identifying themes from interviews; we stopped recruitment when we reached thematic saturation.

RESULTS

We conducted 20 interviews and participants described mixed experiences. Three overarching themes from the qualitative interviews were: (1) physical and emotional discomfort; (2) varied understanding of digoxin's purpose and effects; and (3) reassurance. Most participants described significantly negative experiences with digoxin; however, many participants also described positive aspects of the injection intermingled with those negative experiences.

CONCLUSIONS

Participants' experiences with digoxin before D&E were both polarized and nuanced. While participants were largely clear about digoxin's action, they were much less clear about the reason for its use.

IMPLICATIONS

Both the clinical purpose for and patients' experiences with digoxin before D&E are complicated. Providers who continue to use digoxin should consider patient preferences in how they offer digoxin, and consider tools to ensure patient understanding.

Intra-fetal Compared With Intra-amniotic Digoxin Before Dilation and Evacuation: A Randomized Controlled Trial

OBJECTIVE

To compare the effectiveness of 1.0 mg intra-fetal or intra-amniotic digoxin to achieve fetal asystole before second-trimester surgical pregnancy termination.

METHODS

In a randomized trial, women received 1.0 mg transabdominal intra-fetal or intra-amniotic digoxin on the day of laminaria placement before dilation and evacuation between 20 and 24 weeks of gestation. The primary outcome was incidence of fetal asystole, documented immediately before dilation and evacuation. We planned to analyze the primary outcome by original group assignment as well as by as-treated and per-protocol populations. A sample size of 270 was needed to detect an 8% difference in failure rates between groups. Prespecified secondary outcomes included the incidence of adverse events, side effects, and procedural differences.

RESULTS

Between January 2012 and January 2013, we screened 381 women and randomized 270 women to receive intra-fetal (n=136) or intra-amniotic (n=134) digoxin. Characteristics were similar across groups; the mean gestational age was 21.6 weeks (standard deviation 1.2). The proportion of fetal asystole was higher in the intra-fetal group (128/135 [94.8%]) than the intra-amniotic group (107/130, 82.3%; relative risk of failure to achieve asystole 3.41, 95% confidence interval 1.52-7.68). Results were similar in the as-treated and per-protocol populations. There were no significant differences in adverse events or side effects and no differences in injection duration, operative time, or estimated blood loss.

CONCLUSION

Administration of intra-fetal injection of digoxin led to a higher proportion of participants achieving fetal asystole within 24 hours than intra-amniotic injection.

CLINICAL TRIAL REGISTRATION

ClinicalTrials.gov, https://clinicaltrials.gov, NCT01047748.

Induction of fetal demise before pregnancy termination: practices of family planning providers

OBJECTIVES

Our survey aimed to characterize the practice of inducing fetal demise before pregnancy termination among abortion providers, including its technical aspects and why providers have chosen to adopt it.

STUDY DESIGN

We conducted a survey of Family Planning Fellowship-trained or Fellowship-affiliated Family Planning (FP) subspecialists about their practice of inducing fetal demise, including questions regarding the circumstances in which they would induce demise, techniques used and rationales for choosing whether to adopt this practice.

RESULTS

Of the 169 FP subspecialists we surveyed, 105 (62%) responded. About half (52%) of respondents indicated that they routinely induced fetal demise before terminations in the second trimester. Providers' practices varied in the gestations at which they started inducing demise as well as the techniques used. Respondents provided legal, technical and psychological reasons for their decisions to induce demise.

CONCLUSION

Inducing fetal demise before second-trimester abortions is common among US FP specialists for multiple reasons. The absence of professional guidelines or robust data may contribute to the variance in the current practice patterns of inducing demise.

IMPLICATIONS

Our study documents the widespread practice of inducing fetal demise before second-trimester abortion and further describes wide variation in providers' methods and rationales for inducing demise. It is important for abortion providers as a professional group to come to a formal consensus on the appropriate use of these techniques and to determine whether such practices should be encouraged, tolerated or even permitted.

Feasibility, effectiveness and safety of transvaginal digoxin administration prior to dilation and evacuation

OBJECTIVES

This study evaluates the feasibility, efficacy and safety of transvaginal digoxin administration to induce fetal demise prior to dilation and evacuation.

STUDY DESIGN

This descriptive report from a single center involves a large case series of dilations and evacuations (D&Es) ranging from 18 to 22 weeks of gestation. Transvaginal feticidal injection with digoxin was attempted in 1640 cases; intrafetal, intraamniotic and combined (intrafetal and intraamniotic) injections were administered. Digoxin dosage ranged from 0.5 to 3.0 mg, with the majority receiving 1.0 mg. Cases were reviewed to determine feasibility, efficacy and adverse events.

RESULTS

Successful completion of transvaginal injection occurred in 98.5% (1637/1662) of eligible cases, and 1596 cases were evaluable for fetal demise. Demise occurred by the time of D&E in 99.4% of all cases; 99.7% of intrafetal injections resulted in fetal demise. Doses ≥1 mg were equally effective (98.1%-99.6%) regardless of injection site (intraamniotic, combined intrafetal/intraamniotic or intrafetal). Doses <1.0 mg were less successful at inducing demise if not administered intrafetally (p<.001). Rates of ruptured membranes (4.1%), chorioamnionitis (0.49%) and extramural deliveries (0.12%) were low. Patients who experienced complications were more likely to be of greater gestational age and have had a previous cesarean section.

CONCLUSIONS

Transvaginal digoxin administration is feasible, effective and safe.

IMPLICATION STATEMENT

This study demonstrates the feasibility, effectiveness and safety of transvaginal digoxin administration in a large clinical cohort. Future studies will be needed to determine if this method of administration improves patient satisfaction and outcomes when compared to transabdominal feticidal injections.