Medication abortion employing routine sequential measurements of serum hCG and sonography only when indicated

Evaluating the agreement of ultrasound imaging and beta-human chorionic gonadotropin (β-hCG) measurement in confirming completed medical abortion: cross-sectional study

Objective: Clinical methods that are generally used to evaluate the completeness of medical abortion are not reliable. Ultrasound imaging and beta-human chorionic gonadotropin (β-hCG) measurements are used to diagnose completed medical abortion, but a precise evaluation of these two methods has shown contradictory results. The purpose of this study is to evaluate the agreement of serum β-hCG measurement and ultrasound imaging to confirm complete medical abortion.

Materials and Methods: This study was conducted on pregnant women who had been referred to our center for medical abortion from 2015 to 2017. All cases occurred in the first trimester of pregnancy. They obtained one or two doses of vaginal misoprostol for medical abortion. Success rate of medical abortion was measured by both transvaginal ultrasound imaging and consecutive serum β-hCG measurements two to four weeks after initial treatment.

Results: Among the 275 women who completed the study, complete medical abortion was confirmed by serum β-hCG in 231 women (84.3%) and transvaginal ultrasound imaging in 195 women (70.8%) after two weeks. All remaining cases completed the medical abortion after an additional two weeks, confirmed by both transvaginal ultrasound imaging and serum β-hCG. The sensitivity, specificity, positive, and negative predictive values of β-hCG were 95.2%, 86.7%, 84%, and 70%, respectively; and these values for transvaginal ultrasound imaging were 68.5% 64.5%,77%, and 30.%, respectively, for the diagnosis of completed medical abortion.

Conclusion: Serum β-hCG measurement is as effective as transvaginal ultrasound imaging to confirm successful medical abortion in early pregnancy.

Comparing telemedicine to in-clinic medication abortions induced with mifepristone and misoprostol

Objective

The objective was to compare the practical aspects of providing medication abortions through telemedicine and in-person clinic visits so that clinics can use this information when planning to add this service.

Study design

We conducted a comparative retrospective chart review comparing telemedicine medication abortions to a control group matched for date seen. We extracted and compared demographics, use of dating ultrasound, outcomes and unscheduled visits or communications with staff and physicians.

Results

During the study period, we provided 4340 medication abortions, of which 182 (4.2%) were provided through by telemedicine; 199 patients met the criteria to be in the control group. The mean age was 28.7 years for telemedicine patients and 28.1 years for in-person patients (p = .38). The mean gestational ages were also similar, 48.2 days for telemedicine patients and 46.5 days for in-person patients (p = .03). Only 33 (18.1%) of telemedicine patients had dating ultrasounds compared to 199 (100%) of in-clinic patients (p < .001). The proportions of documented completed abortions (164/182, 90.1% and 179/199, 89.9%, p = .76) were similar, as were the proportions of aspirations for completion (6/182, 3.3% and 9/199, 4.5%, p = .54) and the proportions lost to follow-up (5.5% and 6.6%, p = .66). There were 10 complications in each group (5.5% of telemedicine patients and 5.0% of in-clinic patients) (p > 0.5). Unscheduled communications with office assistants were greater in the telemedicine patients than the in-person patients (84/182, 46.2% vs. 43/199, 21.6% in-person, p < .001).

Conclusion

We found that telemedicine patients required more unscheduled communications and received ultrasounds far less often compared to in-clinic patients.

Implications

We could provide telemedicine without the need for ultrasound to most women. Larger studies without routine ultrasound use are needed to validate our findings. Unscheduled communication with clinic staff was more frequent with telemedicine medication abortion patients. This information may help clinics when planning to add this service.

Medical Abortion

OBJECTIVE

This guideline reviews the evidence relating to the provision of first-trimester medical induced abortion, including patient eligibility, counselling, and consent; evidence-based regimens; and special considerations for clinicians providing medical abortion care.

INTENDED USERS

Gynaecologists, family physicians, registered nurses, midwives, residents, and other healthcare providers who currently or intend to provide pregnancy options counselling, medical abortion care, or family planning services.

TARGET POPULATION

Women with an unintended first trimester pregnancy.

EVIDENCE

Published literature was retrieved through searches of PubMed, MEDLINE, and Cochrane Library between July 2015 and November 2015 using appropriately controlled vocabulary (MeSH search terms: Induced Abortion, Medical Abortion, Mifepristone, Misoprostol, Methotrexate). Results were restricted to systematic reviews, randomized controlled trials, clinical trials, and observational studies published from June 1986 to November 2015 in English. Additionally, existing guidelines from other countries were consulted for review. A grey literature search was not required.

VALUES

The quality of evidence in this document was rated using the criteria described in the Report of the Canadian Task Force for Preventive Medicine rating scale (Table 1).

BENEFITS, HARMS AND/OR COSTS

Medical abortion is safe and effective. Complications from medical abortion are rare. Access and costs will be dependent on provincial and territorial funding for combination mifepristone/misoprostol and provider availability.

SUMMARY STATEMENTS

Introduction Pre-procedure care Medical abortion regimens Providing medical abortion Post-abortion care

RECOMMENDATIONS

Introduction Pre-procedure care Medical abortion regimens Providing medical abortion Post-abortion care.

Comparison of remote and in-clinic follow-up after methotrexate/misoprostol abortion

OBJECTIVE

This study compared adherence to follow-up and clinical outcomes between standard in-clinic and remote follow-up after methotrexate/misoprostol abortion.

STUDY DESIGN

This nonrandomized trial recruited women requesting medical abortion at two sexual health clinics in Toronto, Canada. Women received methotrexate 50 mg/m(2) followed 3-7 days later by 800 mcg of misoprostol self-administered vaginally. For Day 15, follow-up participants could choose standard in-clinic follow-up with ultrasound and assessment or remote telephone follow-up with serum β-hCG performed at a community laboratory and symptom checklist. Standard and remote follow-up groups were compared for adherence, defined as completing follow-up within 7 days of the scheduled time, and clinical outcomes. Characteristics associated with adherence were assessed using multivariable logistic regression.

RESULTS

Of 129 women, 86 (67%) chose remote follow-up. Nonadherence rates for remote (28%) and standard (23%) follow-up groups did not differ in univariate (p=.57) or multivariable analysis (odds ratio: 1.09, 95% confidence interval: 0.39-3.01). Rates of emergency/hospital visits were 3% and 9% for remote and standard groups, respectively (p=.22), and complete loss to follow was 6% and 14% in remote and standard groups (p=.18). Nonadherent women were more likely to be undecided about their contraception (65% vs. 28%; p=.002), and this difference persisted in the multivariable analysis.

CONCLUSION

Given a choice of remote or in-clinic follow-up after methotrexate/misoprostol abortion, most women chose remote follow-up. Rates of adherence to follow-up, adverse outcomes and complete loss to follow-up were similar for women choosing remote and standard follow-up.

IMPLICATIONS STATEMENT

Since standard and remote follow-up after methotrexate/misoprostol abortion are associated with similar adherence to follow-up and similar safety profiles, women should be offered their choice of follow-up method.

An overview of medical abortion for clinical practice

Medical abortion is a safe, convenient, and effective method for terminating an early unintended pregnancy. Medical abortion can be performed up to 63 days from the last menstrual period and may even be used up to 70 days for women who prefer medical abortion over surgical abortion. Counseling on the adverse effects and expectations for medical abortion is critical to success. Medical abortion can be performed in a clinic without special equipment, and it is perceived as more "natural" than a surgical abortion by many women. Follow-up for medical abortion can be simplified to include only serum human chorionic gonadotropin measurements when necessary, although obtaining an ultrasound remains the criterion standard. Pain associated with medical abortion is best treated with nonsteroidal anti-inflammatory medications, possibly in combination with opioid analgesics. Medical abortion can contribute to continuity of care for women who wish to remain with their primary care providers for management of their abortion.

Early serum human chorionic gonadotropin (hCG) trends after medication abortion

OBJECTIVES

Despite increased reliance on human chorionic gonadotropin (hCG) for early pregnancy monitoring, there is limited information about hCG trends soon after medication abortion. The purpose of this study was to determine if there is a predictable decline in serum hCG values shortly after medication abortion.

STUDY DESIGN

This is a retrospective study of women with early intrauterine pregnancies who underwent medication abortion with mifepristone and misoprostol and had a serum hCG level on Day 1 (day of mifepristone) and a repeat value on Day 2 to 6. The percent hCG decline was calculated from baseline to repeat measure, with repeat values from the same patient accounted for through repeated measure analysis of variance.

RESULTS

Eighty-eight women with a mean gestational age of 5.5 weeks and median baseline hCG of 5220 IU met study criteria over a 3-year period. The mean decline (±SD) in hCG from the Day 1 baseline value was 56.9%±29.5% on Day 3, 73.5%±38.6% on Day 4, 86.1%±8.8% on Day 5, and 92.9%±3.4% on Day 6. Eighty-two women (93% of the cohort) had a complete abortion without further intervention. The least square means hCG decline among these women was 57.6% [95% confidence interval (CI): 50.3-64.9%] on Day 3, 78.9% (95% CI: 75.0-82.8%) on Day 4 and 86.2% (95% CI: 81.3-91.1%) on Day 5.

CONCLUSION

There is a rapid decline in serum hCG within the first few days after early medication abortion. Further research is needed to delineate how soon after medication abortion this decline may be specific enough to confirm abortion completion.

IMPLICATIONS

This study provides the largest cohort of patients followed with serial hCG values in the first few days after medication abortion. Our findings demonstrate the trend in hCG decline in this population, which may be predictable by Day 5.

Misoprostol Abortion: Ultrasonography versus Beta-hCG Testing for Verification of Effectiveness

BACKGROUND AND OBJECTIVE

Miscarriage is a common complication of early pregnancy with medical and psychological consequences. Dilation and Curettage are considered as two standard caring ways for early pregnancy failure. Alternatively misoprostol has been used as a single agent for termination of early pregnancy. Aim of the present study was to compare the usefulness of serum β-hCG measurement and ultrasound examination to predict complete abortion after medical induction.

METHODS

There were one hundred and thirty three patients experiencing missed abortion or blighted ovum. Ultrasound examination and serum β-hCG test were performed before treatment and during follow-up in all these patients.

RESULTS

Treatment was successful without any need for surgical intervention in 92.4% of the cases. Both methods could verify the complete abortion among all the patients at the end of the study (4(th) week). Kappa agreement coefficient for the two methods of diagnosis was 0.327 (P < 0.5).

CONCLUSION

Based on our results, β- hCG is as effective as ultrasound in confirming a successful medically induced abortion in early pregnancy, but it should be used as supplements to clinical assessments.

Medical abortion follow-up with serum human chorionic gonadotropin compared with ultrasonography: a randomized controlled trial

OBJECTIVE

To estimate whether follow-up with serum human chorionic gonadotropin (hCG) results in fewer unplanned visits and interventions than follow-up with ultrasonography.

METHODS

Women were randomized to either in-clinic serum hCG or ultrasound follow-up after medical abortion. The primary outcome, unplanned interventions and visits, was measured as a composite binary outcome including: additional clinic or emergency room visits, repeat dosing of misoprostol, and surgical evacuation of the uterus. Surveys were administered at initial follow-up and again 1 month after abortion to inquire about unscheduled visits, interventions, and patient satisfaction. Medical records were reviewed for evidence of additional interventions and visits.

RESULTS

A total of 376 patients was randomized. Most participants were white (56%), single (83%), nulliparous (63%), and had completed high school (96%). Average participant age was 26±6 years and average gestational age was 46±6 days. Within 2 weeks of abortion, there was no significant difference in the rate of unplanned interventions and visits between arms, 8.2% (13/159) in the serum hCG arm compared with 6.6% (10/151) in the ultrasound arm (relative risk 1.23, 95% confidence interval [CI] 0.56-2.73, P=.60). By 4 weeks postabortion, 4.4% (6/135) in the ultrasound arm and 1.4% (2/142) in the hCG arm had undergone surgical evacuation (relative risk 0.32, 95% CI 0.07-1.54, P=.16). The majority in both the serum hCG (88%) and ultrasound (95%) arms was satisfied with their assigned follow-up method.

CONCLUSION

Medical abortion follow-up with serum hCG does not reduce the rate of unplanned interventions and visits compared with ultrasonography. Overall, the number of unplanned interventions is low and both methods of follow-up are acceptable to women.

Alternatives to ultrasound for follow-up after medication abortion: a systematic review

BACKGROUND

Requiring a follow-up visit with ultrasound evaluation to confirm completion after medication abortion can be a barrier to providing the service.

STUDY DESIGN

The PubMed (including MEDLINE), Cochrane Central Register of Controlled Trials and POPLINE databases were systematically searched in October and November 2009 for studies related to alternative follow-up modalities after first-trimester medication abortion to diagnose ongoing pregnancy or retained gestational sac. We calculated the sensitivity, specificity, positive predictive value and negative predictive value compared with ultrasound or clinician's exam. We also calculated the proportion of cases in each study with a positive screening test.

RESULTS

Our search identified eight articles. The most promising modalities included serum human chorionic gonadotropin measurements, standardized assessment of women's symptoms combined with low-sensitivity urine pregnancy testing and telephone consultation. These follow-up modalities had sensitivities ≥90%, negative predictive values ≥99% and proportions of "screen-positives" ≤33%.

CONCLUSIONS

Alternatives to routine in-person follow-up visits after medication abortion are accurate at diagnosing ongoing pregnancy. Additional research is needed to demonstrate the accuracy, acceptability and feasibility of alternative follow-up modalities in practice, particularly of home-based urine testing combined with self-assessment and/or clinician-assisted assessment.