Comparison of misoprostol and manual vacuum aspiration for the treatment of incomplete abortion

OBJECTIVE

To compare the safety, efficacy, and acceptability of misoprostol versus manual vacuum aspiration (MVA) for treatment of incomplete abortion in Maputo, Mozambique.

METHODS

A total of 270 women with clinically diagnosed incomplete abortions of up to 12 weeks of gestation were randomized to either 600 mug oral misoprostol or MVA. Women were followed-up seven days later to evaluate whether the abortion was complete.

RESULTS

Success was high for both MVA and misoprostol groups (100% vs 91%, P=0.002). Women in the MVA arm reported fewer side effects but higher pain scores. Women who received misoprostol were significantly more likely to be "very satisfied" with the treatment and willing to choose the method again.

CONCLUSION

Although oral misoprostol was less effective than MVA in this study, it was more acceptable to women. Misoprostol is well-suited for use in low-resource settings, and should be promoted as an option for the treatment of incomplete abortion.

Medical management of early pregnancy failure in a patient with coronary artery disease

OBJECTIVE

To describe a case of early pregnancy failure in a patient who was not an optimal candidate for suction aspiration because of her body habitus and history of a myocardial infarction that was treated medically with misoprostol.

DESIGN

Case report.

SETTING

Academic tertiary-care hospital.

PATIENT

A 43-year-old woman with morbid obesity, coronary artery disease, previous myocardial infarction, obstructive sleep apnea, and other medical problems who presented with an early pregnancy failure.

INTERVENTION

Medical management with 800 microg of vaginal misoprostol in an inpatient setting with cardiac monitoring.

MAIN OUTCOME MEASURE(S)

Ultrasonographic resolution of intrauterine pregnancy, vaginal bleeding, and cardiac events.

RESULT(S)

No gestational sac was visualized by ultrasound on the second hospital day, the patient's hemoglobin value at discharge was 12.1 mg/dL, and no adverse cardiac events occurred.

CONCLUSION(S)

Medical management with misoprostol on an inpatient basis is a possible alternative to dilation and curettage in patients with complex medical problems and early pregnancy failure.

Clinical indicators for success of misoprostol treatment after early pregnancy failure

OBJECTIVE

To identify clinical indicators for success of misoprostol treatment after early pregnancy failure.

METHODS

A total of 473 women with early pregnancy failure received 800 microg of vaginal misoprostol on treatment day 1. At the follow-up visit on day 3, a second dose was given if expulsion was incomplete. On day 8, vacuum aspiration was offered if expulsion had not occurred. Ultrasonography was used as gold standard for success. A Classification and Regression Tree analysis was undertaken to derive two decision trees for the success of misoprostol treatment on study days 3 and 8.

RESULTS

Heavy bleeding after the first dose and an open cervical os were identified as clinical indicators of treatment success on day 3. Treatment success occurred in 84% of women with either or both indicators. Reporting passage of tissue after a second misoprostol dose and old blood in the vagina were potential indicators of treatment success or failure on day 8. A woman with either of these indicators has a 65% chance of treatment success after the second dose. Conversely, a woman with neither indicator on day 8 has a 94% chance of treatment failure.

CONCLUSION

Standard clinical findings may be useful as indicators for success or failure of medical management of early pregnancy failure in settings with limited or no access to ultrasonography. More research to identify even better indicators is warranted.

Surgical management of early pregnancy failure: history, politics, and safe, cost-effective care

Early pregnancy failure and induced abortion are often managed differently, even though safe uterine evacuation is the goal in both. Early pregnancy failure is commonly treated by curettage in operating room settings in anesthetized patients. Induced abortion is most commonly managed by office vacuum aspiration in awake or sedated patients. Medical evidence does not support routine operating room management of early pregnancy failure. This commentary reviews historical origins of these different care standards, explores political factors responsible for their perpetuation, and uses experience at University of Michigan to dramatize the ways in which history, politics, and biomedicine intersect to produce patient care. The University of Michigan initiated office uterine evacuations for early pregnancy failure treatment. Patients previously went to the operating room. These changes required faculty, staff, and resident education. Our efforts blurred the lines between spontaneous and induced abortion management, improved patient care and better utilized hospital resources.

The use of misoprostol for early pregnancy failure

PURPOSE OF REVIEW

This paper reviews the current management of early pregnancy failure with particular emphasis on the use of misoprostol.

RECENT FINDINGS

Medical management using misoprostol is effective for the management of miscarriages. The success rate ranged from 84 to 93% depending on the regimen of misoprostol, the duration of waiting period and the types of miscarriage.

SUMMARY

Miscarriages occur in 10 to 20% of all pregnancies. Surgical evacuation has been used to empty the uterus. Recently, medical treatment using misoprostol has been studied for the management of miscarriage. It avoids surgery and its associated complications. Compared to expectant management, the success rate is higher. Nonsurgical management takes a longer period to reach the endpoint and medical management is associated with side effect of medication. Studies have shown that medical management is safe and acceptable to women. The optimal regimen of medical management, however, is yet to be determined.

Factors related to successful misoprostol treatment for early pregnancy failure

OBJECTIVE

To identify potential predictors for treatment success in medical management with misoprostol for early pregnancy failure.

METHODS

We conducted a planned secondary analysis of data from a multicenter trial that compared medical and surgical management of early pregnancy failure. Medical management consisted of misoprostol 800 mug vaginally on study day 1, with a repeat dose if indicated on day 3. Women returned on days 3 and 15, and a telephone interview was conducted on day 30. Failure was defined as suction aspiration for any reason within 30 days. Demographic, historical, and outcome variables were included in univariable analyses of success. Multivariable analyses were conducted using clinical site, gestational age, and variables for which the univariable analysis resulted in a P < .1 to determine predictors of overall treatment success and first-dose success.

RESULTS

Of the 491 women who received misoprostol, 485 met the criteria for this secondary analysis. Lower abdominal pain or vaginal bleeding within the last 24 hours, Rh-negative blood type, and nulliparity were predictive of overall success. However, only vaginal bleeding within the last 24 hours and parity of 0 or 1 were predictive of first-dose success. Overall success exceeds 92% in women who have localized abdominal pain within the last 24 hours, Rh-negative blood type, or the combination of vaginal bleeding in the past 24 hours and nulliparity.

CONCLUSION

Misoprostol treatment for early pregnancy failure is highly successful in select women, primarily those with active bleeding and nulliparity. Clinicians and patients should be aware of these differences when considering misoprostol treatment.

LEVEL OF EVIDENCE

II-2.

A randomized trial of misoprostol compared with manual vacuum aspiration for incomplete abortion

OBJECTIVE

To compare the safety, efficacy, and acceptability of misoprostol and manual vacuum aspiration for the treatment of incomplete abortion in a hospital setting in Kampala, Uganda.

METHODS

Three hundred seventeen women with clinically diagnosed incomplete first-trimester abortions were randomized to treatment with either manual vacuum aspiration or 600 mug misoprostol orally to complete their abortions. All women received antibiotics posttreatment and were followed up 1-2 weeks later.

RESULTS

Regardless of treatment allocation, nearly all women in this study successfully completed their abortions with either oral misoprostol or manual vacuum aspiration (96.3% versus 91.5%, relative risk 1.05, 95% confidence interval 0.98-1.14). Complications were less frequent in those receiving misoprostol than those having manual vacuum aspiration (0.9% versus 9.8%, relative risk 0.1, 95% confidence interval 0.01-0.78). In the 6 hours after treatment, women using misoprostol reported heavier bleeding but lower levels of pain than those treated with manual vacuum aspiration. Rates of acceptability were similarly high among women in the 2 treatment groups, with 94.2% and 94.7% of women reporting that their treatment was satisfactory or very satisfactory in the misoprostol and manual vacuum aspiration groups, respectively.

CONCLUSION

For treatment of first-trimester uncomplicated incomplete abortion, both manual vacuum aspiration and 600 microg oral misoprostol are safe, effective, and acceptable treatments. Based on availability of each method and the wishes of individual women, either option may be presented to women for the treatment of incomplete abortion.

LEVEL OF EVIDENCE

I.

A randomised double blind trial comparing misoprostol or placebo in the management of early miscarriage

OBJECTIVES

To study if misoprostol 400 microg, administered vaginally, increased the successful resolution of early miscarriage compared with placebo.

DESIGN

Randomised, double blind placebo controlled study.

SETTING

Sahlgrenska University Hospital, Göteborg, Sweden.

SAMPLE

One hundred and twenty-six women seeking medical attention for early miscarriage.

METHOD

Women with a non-viable, first trimester miscarriage were randomised to vaginal administration of misoprostol 400 microg or placebo.

MAIN OUTCOME MEASURES

Main outcome measure was the proportion of successful complete resolution of miscarriage. Secondary outcomes were incidence of infection, bleeding, gastrointestinal side effects, pain, use of analgesics and length of sick leave between groups.

RESULTS

Sixty-four patients were randomised to misoprostol and 62 to placebo. Eighty-one percent in the misoprostol and 52% in the placebo group had a complete miscarriage within one week of the primary visit (RR 1.57; 95% CI 1.20-2.06). Patients in the misoprostol group reported more pain as assessed on a visual analogue scale (60.4 [31.0] vs 43.8 [37.1] mm; P < 0.007) and required analgesics more often (83%vs 61%, RR 1.35; 95% CI 1.08-1.70). There were no significant differences in the occurrence of gastrointestinal side effects, infection, reduction in haemoglobin or sick leave between the groups.

CONCLUSIONS

Treatment with 400 mug misoprostol administered vaginally increased the success rate of resolvement of uncomplicated early miscarriages compared with placebo. However, women who received misoprostol experienced more pain and required more analgesics than those who did not.

A randomized controlled study comparing 600 versus 1,200 microg oral misoprostol for medical management of incomplete abortion

OBJECTIVES

Although a number of studies have shown misoprostol's promise as a nonsurgical treatment for incomplete abortion, few have systematically examined treatment protocols. This study documents the effectiveness of 600 versus 1,200 microg oral misoprostol for this indication.

METHODS

From May 2002 to January 2003, 300 women with incomplete abortion were recruited at a large tertiary facility in Vietnam and randomized to either a single-dose (600 microg) or a repeated-dose (600 microg x 2) regimen of oral misoprostol for the treatment of their condition.

RESULTS

Misoprostol effectively evacuated the uterus for nearly all women (94.6%; n=279), with most reporting bleeding for 4 days (+/-2.3) and pain/cramps lasting 1 day (+/-1.0). Women indicated that the side effects were tolerable (96%) and that their experience was satisfactory (95%).

CONCLUSIONS

Oral misoprostol (600 or 1,200 microg) offers a safe, effective and acceptable treatment for incomplete abortion. Larger studies to assess the advantages and disadvantages of misoprostol as compared with standard surgical care are needed to assess its role in postabortion care programs worldwide.

Endometrial thickness after misoprostol use for early pregnancy failure

OBJECTIVES

To assess if there was any potential relationship between endometrial thickness and final treatment outcome in women successfully treated with misoprostol for a first trimester anembryonic gestation, embryonic demise or fetal demise.

METHODS

Eighty women were treated with up to two doses of misoprostol 800 microg vaginally for early pregnancy failure. Subjects were scheduled to return 2 (range 1-4), 7 (range 5-9) and 14 (range 12-17) days after treatment. Transvaginal ultrasonography was performed at each follow-up visit.

RESULTS

The median endometrial thickness at each of the follow-up visits for women who had expelled the gestational sac was 14 mm, 10 mm, and 7 mm, respectively. The endometrial thickness at the first follow-up visit exceeded 15 mm in 20 subjects (36%) and 30 mm in four subjects (7%). Only three women had a suction aspiration for bleeding after documented expulsion. The endometrial thickness for these women was 11, 13, and 14 mm at the first follow-up visit.

CONCLUSIONS

There is no obvious relationship between increasing endometrial thickness and the need for surgical intervention in women treated with misoprostol for early pregnancy failure.

Comparative study between single dose 600 μg and repeated dose of oral misoprostol for treatment of incomplete abortion

OBJECTIVE

To evaluate and compare the effectiveness and side effects of two regimens of oral misoprostol, single dose (600 microg) and repeated dose (1200 microg), in the treatment of incomplete abortion.

METHODS

A prospective randomized controlled trial was conducted. One-hundred women who had incomplete abortion (gestational age < 20 weeks) and consented to randomization by computer-generated randomization model prior to treatment. A single oral 600-microg dose or repeated oral dose after 4 h (total 1200 microg) was given to the randomized women.

RESULTS

The overall incidence of complete abortion was 86.9%. This incidence was not statistically different between the single-dose and repeated-dose groups (81.6% vs. 92%, p > 0.05). However, there was a significantly decreased incidence of diarrhea (18.4% vs. 40%, p < 0.05) with the use of single-dose treatment. Overall rate of acceptability and tolerable side effects were 88.9% and 97.9%, respectively. These rates were similar in both groups (87.8% vs. 90% and 98% vs. 98%, p > 0.05).

CONCLUSIONS

Oral misoprostol may be a practical alternative in the management of incomplete abortion. Oral misoprostol is acceptable and tolerable to women. Single-dose regimen is as effective as repeated-dose regimen, with a reduction in the incidence of diarrhea.

Two regimens of misoprostol for treatment of incomplete abortion

OBJECTIVES

Misoprostol shows promise for treatment of incomplete abortion. We evaluated 2 simple misoprostol regimens to estimate whether they were effective in treating incomplete abortion.

METHODS

A total of 169 women was randomly assigned to either a single or double dose of 600 microg misoprostol. The women, who would have received a surgical evacuation of the uterus for incomplete abortion, were patients at 2 hospitals in Bangkok, Thailand. The 2 groups of women were compared for success of treatment (no need for surgical evacuation), side effects, and acceptability.

RESULTS

Sixty-six percent of women in the single-dose group and 70% of women in the double-dose group had complete abortions with misoprostol. More than 90% of women in the single- and double-dose groups reported that the side effects were tolerable; frequency of side effects was similar between the 2 groups. Women found the treatment acceptable. Approximately 90% of women in both groups would recommend the treatment to a friend. Acceptability and efficacy were different at the 2 participating clinics.

CONCLUSION

Misoprostol is an effective treatment for incomplete abortion. Simple regimens may be as effective as more complicated ones and a single dose of 600 microg should be further evaluated in larger trials.

Bleeding patterns after vaginal misoprostol for treatment of early pregnancy failure

BACKGROUND

Dilatation and curettage (D&C) has been the usual treatment for early pregnancy failure (EPF). Medical management with misoprostol may be an effective alternative. Bleeding patterns during and after medical management of EPF are unknown.

METHODS

A prospective cohort study was conducted at University-based clinics and physician offices. Eighty women <11 weeks estimated gestational age with a diagnosis of missed abortion or fetal demise were enrolled. Treatment consisted of either 800 micro g of moistened (2 ml of saline) or dry vaginal misoprostol. Self-reported bleeding and sanitary product usage were recorded in a daily 2 week diary. Haemoglobin was assessed at enrollment and 2 weeks later.

RESULTS

After misoprostol treatment, patients reported bleeding or spotting every day for the 14 days observed. Self-assessed heavy bleeding days were few (median 3) and usually occurred immediately after treatment. Sanitary pad use was highly variable (mean 30.5, range 2-125 pads over the 2 week period) and not related to changes in haemoglobin. The mean decrease in haemoglobin was 0.5 g/dl (SD 1.2). Complete expulsion without D&C occurred in 85% of subjects.

CONCLUSIONS

Bleeding for at least 2 weeks after vaginal misoprostol for EPF is common. Heavy bleeding is usually limited to a few days after treatment. Clinically important changes in haemoglobin are rare.

Misoprostol for uterine evacuation in patients with early pregnancy failures

OBJECTIVE

The purpose of this study was to evaluate the effectiveness of misoprostol that is administered intravaginally for uterine evacuation in patients with early pregnancy failures.

STUDY DESIGN

From March 2001 through March 2003, we treated 41 patients who had early pregnancy failures with vaginal misoprostol, 800 microg. A second course of misoprostol was administered if uterine evacuation did not occur in 24 hours. Patients who had no response to misoprostol underwent a surgical curettage. Our principal outcome measures were the percentage of patients who had successful evacuation of the products of conception and the frequency of adverse drug effects.

RESULTS

Twenty-six patients had successful uterine evacuation with a single course of misoprostol; 6 patients required a second course. The overall success rate was 78% (95% CI, 63, 88). No patient experienced a serious adverse drug effect.

CONCLUSION

Intravaginal misoprostol is a safe, effective alternative to surgical curettage for the treatment of early pregnancy failure.

[Use of misoprostol in the termination of missed abortion]

The efficiency of misoprostol in the termination of missed abortion was estimated. The group of 66 patients aged 19 - 37, who received 400 microg of vaginal misoprostol for termination of missed abortion was subjected. The overall success rate for a complete abortion was 30.3%, for incomplete abortion 25.8% and in a group of 27.2% women there was no need for cervix canal dilatating during the excochleation of uterus cavity. 16.7% cases failed. The results obtained in this study led us to the conclusion that 400 microg of vaginal misoprostol can induce the termination of missed abortion or dilatation of the uterus' canal.

Incomplete miscarriage: a randomized controlled trial comparing oral with vaginal misoprostol for medical evacuation

BACKGROUND

A prospective randomized controlled trial was conducted to compare the efficacy and side-effects of vaginal versus oral misoprostol in the medical management of incomplete miscarriage.

METHODS

Two hundred and one patients who miscarried consented to randomization using computer-generated randomization model prior to treatment. A total of 800 microg of misoprostol was given either vaginally or orally to the randomized subjects. A second dose was repeated 4 h later if the product of conception had not been passed.

RESULTS

The incidence of complete uterine evacuation following vaginal and oral misoprostol was similar [(58/95) 61.1% versus (67/103) 64.4%]. There was a significantly decreased incidence of diarrhoea [(12/95) 13.6% versus (62/103) 65.3%, P < 0.01] with the use of vaginal misoprostol.

CONCLUSIONS

Vaginal misoprostol was as effective as oral misoprostol in medical uterine evacuation in patients with incomplete miscarriage. There was also a reduction in the incidence of diarrhoea with the use of vaginal misoprostol.

The treatment of incomplete miscarriage with oral misoprostol

In a retrospective study of 112 women, the effectiveness of three sequential oral doses of misoprostol was evaluated for the treatment of incomplete miscarriage. We report our experience with this regimen, which achieved a complete miscarriage rate of 85%. Surgical intervention was required in 17 women (15%). The regimen appears to be effective in terms of a high rate of complete miscarriage, and it is safe.

A prospective randomized control trial comparing medical and surgical treatment for early pregnancy failure

A prospective randomized control trial was designed to assess the effectiveness of single dose, 800 microg misoprostol administered p.v. compared with surgical evacuation for the treatment of early pregnancy failure. A total of 80 women with a diagnosis of early pregnancy failure were randomized to study (vaginal misoprostol) and control (surgical curettage) groups. Success of treatment, side-effects as assessed during, immediately after and 10 days after treatment, and patient satisfaction were compared. Intravaginal misoprostol was successful in 82.5% (33 out of 40) of the patients. None of the control group patients required a repeat evacuation. The number of patients who experienced significant abdominal pain following treatment did not differ between the groups. The duration of pain was shorter in the control group; however, they required more analgesics during this short period. The number of patients with significant vaginal bleeding, the duration or severity of bleeding did not show any significant difference between the groups. All 33 patients in the study group who had successful treatment expressed satisfaction, whereas only 58% of the control group did so. In conclusion this randomized control study demonstrated the efficacy and safety of the administration of 800 microg of misoprostol p.v. for the management of early pregnancy failure.

Medical management of non-viable early first trimester pregnancy

OBJECTIVE

To compare the efficacy of intramuscular methotrexate plus vaginal misoprostol to vaginal misoprostol alone in completing abortion in women with non-viable early first trimester pregnancy.

METHOD

Twenty-one women with non-viable pregnancy up to 49 days gestation were randomized to receive intramuscular methotrexate, followed 2 days later by vaginal misoprostol or misoprostol alone. We also collected patient satisfaction information.

RESULT

Complete abortion occurred in all 12 (100%) women in the combined group and eight of nine (89%, RR = 1.13, CI 0.89-1.42) women in the misoprostol only group. Of the women, 75% rated their experience as good and would choose medical management again.

CONCLUSION

Either methotrexate plus misoprostol or misoprostol alone effectively completed abortion in women with non-viable early pregnancy and represent acceptable medical alternatives to surgery or expectant management.

Spontaneous abortion: a randomized, controlled trial comparing surgical evacuation with conservative management using misoprostol

OBJECTIVE

To compare the efficacy of surgical evacuation of the uterus with medical evacuation using misoprostol in cases of spontaneous abortion.

DESIGN

A prospective, randomized, controlled trial.

SETTING

A university teaching hospital.

PATIENT(S)

Six hundred thirty-five women who aborted spontaneously and who consented to pretreatment randomization.

INTERVENTION(S)

Routine surgical evacuation or medical evacuation of the uterus using misoprostol.

MAIN OUTCOME MEASURE(S)

Immediate, short-term (2-3 weeks), and medium-term (6 months) medical complications.

RESULT(S)

There was a significantly lower incidence of immediate and short-term complications in the group treated with misoprostol compared with the surgically treated group. There were also fewer major complications in the 6 months after treatment in the medically treated group. Approximately 50% of the medically treated group subsequently required surgical evacuation, and these subjects required significantly more analgesia.

CONCLUSION(S)

Treatment with misoprostol can reduce the demand for surgical evacuation in cases of spontaneous abortion, and its use is associated with fewer medical complications.

[Embryo expulsion induction in first trimester miscarriages. Use of mifepristone (RU 486) in a double blind prospective randomized study]

We investigated the use of oral mifepristone (RU486) for the induction of natural expulsion in women with spontaneously interrupted pregnancy in the first trimester in a double blind placebo controlled study against placebo. 46 women consulting for interrupted pregnancy diagnosed at ultrasound with no clinical sign of miscarriage were included in the trial. Main outcome measures were occurrence of natural expulsion, frequency of complete expulsion need for subsequent surgical evacuation, analgesia and need for transfusion. Natural expulsion occurred within 5 days in 82% patients receiving treatment versus 8% placebo treated patients (p < 0.001). All patients experienced bleeding after RU486 and 2 needed emergency aspiration for haemorrhagic expulsion. The treatment failed in 4 patients who underwent evacuation under local anesthesia. In the control group 19 patients underwent evacuation under local (n = 9) or general (n = 11) anesthesia.

CONCLUSION

A standard oral pilot dose of 600 mg of Mifepristone induces natural expulsion in 82% women with non developing first trimester intra-uterine pregnancies.

Use of intramuscular prostaglandin for failure of mid-trimester abortion by another method

Eight investigators, using a common protocol, studied the use of intramuscular (15S)-15-methyl prostaglandin F2 alpha to abort midtrimester pregnancies which had failed treatment by other methods in 398 cases. Results of treatment of 3 subgroups, defined by reason for primary treatment failure, are presented. The combined efficacy rate was 96.2% with 79.6% of the abortions being complete. The mean time from starting intramuscular therapy to successful abortion was 7.35 hours. The incidence of gastrointestinal side-effects was lower than that previously reported for systemically administered prostaglandins. Serious complications were not appreciably different from those reported for commonly used methods of second trimester abortion except for a slightly higher incidence of excessive bleeding requiring blood replacement. Advantages of this method over currently used methods of treating failures of primary attempts to induce midtrimester abortion by pharmacologic means are discussed.