Misoprostol Archives - Revista Brasileira de Ginecologia e Obstetrícia

  • Artigos Originais

    Misoprostol in substitution at uterine curettage in early pregnancy failure

    Revista Brasileira de Ginecologia e Obstetrícia. 2011;33(6):276-280

    Summary

    Artigos Originais

    Misoprostol in substitution at uterine curettage in early pregnancy failure

    Revista Brasileira de Ginecologia e Obstetrícia. 2011;33(6):276-280

    DOI 10.1590/S0100-72032011000600003

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    PURPOSE: To evaluate the effectiveness of misoprostol administered vaginally for uterine evacuation in interrupted early pregnancies and the time between the administration and emptying correlated with gestational age. METHODS: Clinical trial with 41 patients with pregnancies interrupted between the 7th and the 12th gestational weeks. The mean age was 27.3 (±6.1) years. Mean parity was 2.2 (±1.2) deliveries. The average number of previous abortions was 0.2 (± 0.5). Misoprostol was administered vaginally in a single 800 µg dose and transvaginal ultrasound was performed after 24 hours. Abortion was considered complete when the anteroposterior diameter of the endometrial cavity measured <15 mm. Patients whose diameter remained was larger than 15 mm underwent uterine curettage. Two groups (<8 and >8 weeks of gestational age) were compared using the binomial test and Student's t test regarding outcome: frequency of complete abortion and the interval between administration of misoprostol and abortion (in minutes). The level of significance was 5%. RESULTS: The mean gestational age at diagnosis was 8.5 weeks (SD=1.5). The intervals between administration of misoprostol and uterine contractions and between the administration and abortion were 322.5±97.0 minutes and 772.5±201.0 minutes, respectively. There was complete abortion in 80.3%. The success rate was 96.2% for the first group and 53.3% for the second (p<0.01). We observed a statistically significant difference in time between administration and uterine evacuation (676.2±178.9 vs. 939.5±105.7 minutes, p<0.01). The side effects observed were hyperthermia (12.1%), nausea (7.3%), diarrhea or breast pain (2.4%). No case of genital infection was observed. CONCLUSIONS: The use of vaginal misoprostol is a safe and effective alternative to curettage for interrupted early pregnancies, being better in pregnancies up to the 8th week. The time interval until emptying was lower in pregnancies that were interrupted earlier.

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  • Artigos Originais

    Efficacy of dinoprostone and misoprostol for labor induction in nulliparous women

    Revista Brasileira de Ginecologia e Obstetrícia. 2011;33(3):118-122

    Summary

    Artigos Originais

    Efficacy of dinoprostone and misoprostol for labor induction in nulliparous women

    Revista Brasileira de Ginecologia e Obstetrícia. 2011;33(3):118-122

    DOI 10.1590/S0100-72032011000300003

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    PURPOSE: to determine the efficacy and safety of dinoprostone and misoprostol for the induction of vaginal childbirth, with or without the use of oxytocin in nulliparous women. METHODS: in this retrospective observational study, 238 patients were subjected to the induction of delivery from January 2008 to February 2010 with the use of misoprostol 25 mcg by the vaginal route or a pessary containing 10 mg of dinoprostone. A total of 184 patients were selected, with the following characteristics: nulliparous, gestational age of 37-42 weeks, singleton pregnancies, cephalic presentation, intact membranes, and Bishop score < 3. Obstetric and neonatal data were analyzed and compared between groups. The Student t-test, chi-square test and Fisher's exact test were used for statistical analysis, with the level of significance set at p<0.05. RESULTS: the rate of vaginal childbirth did not differ significantly in patients who used misoprostol and dinoprostone (43.2% versus 50%; p = 0.35, respectively). The ripening of cervix was higher in the group treated with misoprostol (87.3% versus 75.6%, p=0.04). The use of oxytocin was necessary in 58.8% of the misoprostol group and 57.3% in the dinoprostone group after the ripening of cervix. Failed induction was the primary indication of caesarean section delivery in both groups, with no significant difference between them. Fetal and maternal adverse events, such as tachysystole and Apgar scores were similar. CONCLUSION: dinoprostone and misoprostol are both effective for vaginal childbirth induction, although they need to be combined with oxytocin. They showed a similar safety profile, with misoprostol being more efficient regarding cervical ripening.

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  • Artigos Originais

    Cervical Foley catheter versus vaginal misoprostol for cervical ripening and induction of labor: a randomized clinical trial

    Revista Brasileira de Ginecologia e Obstetrícia. 2010;32(7):346-351

    Summary

    Artigos Originais

    Cervical Foley catheter versus vaginal misoprostol for cervical ripening and induction of labor: a randomized clinical trial

    Revista Brasileira de Ginecologia e Obstetrícia. 2010;32(7):346-351

    DOI 10.1590/S0100-72032010000700007

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    PURPOSE: to compare the effectiveness of the Foley balloon with vaginal misoprostol for cervical ripening and labor induction. METHODS: randomized clinical trial, not blind, conducted from January 2006 to January 2008. A total of 160 pregnant women with indication for induction of labor were included and divided into two groups, 80 for Foley and 80 for vaginal misoprostol. Inclusion criteria were: gestational age of 37 weeks or more, a live single fetus with cephalic presentation and a Bishop score of four or less. We excluded patients with a uterine scar, ruptured membranes, estimated fetal weight greater than 4000 g, placenta previa, chorioamnionitis and conditions that imposed the immediate termination of pregnancy. Statistical tests employed were Mann-Whitney, χ2 test or Fisher's exact test, and p value was significant if less than 0.005. RESULTS: misoprostol triggered more frequently spontaneous delivery (50.0 versus 15.0% for Foley, p<0.001) and required less use of oxytocin (41.2 versus 76.2%), and this group presented more tachysystole (21.2 versus 5.0%). The Foley catheter caused more discomfort to the patient (28.7 versus 1.2%). There were no differences in the time required for development of the Bishop score (20.69 versus 21.36 hours), for triggering delivery (36.42 versus 29.57 hours) or in rates of cesarean delivery (51.2 versus 42.5%). There were no significant differences in perinatal performance, with similar rates of abnormal cardiotocography (20.0 versus 21.2%), presence of meconium (13.7 versus 17.5%) and need for neonatal intensive care unit (3.7 versus 6.2%). CONCLUSIONS: the use of the Foley catheter was as effective as misoprostol for cervical ripening, but less effective in triggering spontaneous labor. Our results support the recommendation of its use for cervical ripening, especially in patients with cesarean scar.

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  • Artigos Originais

    Titrated oral solution of misoprostol for labour induction: a pilot study

    Revista Brasileira de Ginecologia e Obstetrícia. 2010;32(5):208-213

    Summary

    Artigos Originais

    Titrated oral solution of misoprostol for labour induction: a pilot study

    Revista Brasileira de Ginecologia e Obstetrícia. 2010;32(5):208-213

    DOI 10.1590/S0100-72032010000500002

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    PURPOSE: to test effectiveness and safety of the oral administration of a new misoprostol formulation in titrated doses for the induction of delivery of a live fetus at term. METHODS: an open pilot multicenter, non-randomized clinical trial was conducted from July to December 2008. A total of 30 patients with indications for induction of labor were included. The patients had a live fetus, Bishop score <6, vertex presentation, fetal weight <4,000g estimated by ultrasonography and amniotic fluid index >5. Exclusion criteria were previous uterine scar, non-reassuring fetal heart rate tracing, multiple pregnancy, fetal growth restriction, genital hemorrhage and presence of genital tumors, ulcerations or malformations. An initial dose of 20µg/hour of the oral misoprostol solution was used in the first 6 hours, and was increased progressively to 20µg/hour every 6 hours if labor did not start, up to a maximum dose of 80µg/h in the first 24 hours, maintained for additional 24 hours if necessary. RESULTS: labor was satisfactorily induced in 96.7% of patients. The interval between the first dose and the beginning of uterine contractions was 3.8±1.8 hours. The interval between the initial dose and delivery varied from 6 to 24 hours. The frequency of vaginal delivery was 80% (24 cases). Most of the patients (60%; n=18) initiated labor with a dose of 20mg/hour. Tachysystole occurred in 13.3% of women and meconium-stained fluid was detected in 20% of cases. There were two cases of Apgar scores <7 in the first minute and no Apgar score <7 in the fifth minute. CONCLUSIONS: the oral solution of misoprostol was effective and safe for the induction of labor. However, further randomized controlled trials are needed to compare this new formulation with misoprostol administered by the vaginal route.

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  • Artigos Originais

    Evaluation of the teratogenic risks in gestations exposed to misoprostol

    Revista Brasileira de Ginecologia e Obstetrícia. 2010;32(1):19-35

    Summary

    Artigos Originais

    Evaluation of the teratogenic risks in gestations exposed to misoprostol

    Revista Brasileira de Ginecologia e Obstetrícia. 2010;32(1):19-35

    DOI 10.1590/S0100-72032010000100004

    Views1

    PURPOSE: failed attempted abortions with the use of misoprostol (Cytotec®) without medical indication have been associated with the occurrence of congenital malformations. The objective of the present study was to identify, in newborns with malformations and in normal controls, the frequency of exposure to misoprostol and the spectrum of associated malformations. METHODS: this was a case-control study involving a daily survey at four public maternities in Fortaleza (CE) for the identification of newborns with malformations and paired controls (1:1) during the period from July to November 2005. The sample comprised 252 parturients interviewed by a trained team by means of a structured questionnaire based on the Latin American Collaborative Study of Congenital Malformations (Estudo Colaborativo Latino-Americano de Malformações Congênitas, ECLAMC). The questionnaire was used to obtain sociodemographic data and a family history of malformations, as well as to identify diverse forms of exposure during pregnancy, including misoprostol. Bivariate analysis and the chi-square test were used to compare cases and controls regarding their characteristics and factors associated with malformation, and the Odds Ratio was calculated to determine the chance of the Case Group to present malformations as compared to the Control Group after exposure to misoprostol. RESULTS: there were no significant differences between groups regarding most of the risk factors for malformations investigated. Attempted abortion was reported by 6.8% of the mothers, with a higher exposure to misoprostol during pregnancy resulting in a greater proportion of malformed newborns, Odds Ratio (OR)=3.65 (95%CI=0.74-17.91). The spectrum of congenital defects encountered with exposure to misoprostol included defects of the central nervous, musculoskeletal, urogenital and cardiovascular systems, in agreement with literature data. CONCLUSION: the findings of this study suggest that fetuses exposed to misoprostol tend to be at higher risk of developing congenital malformations in comparison to non-exposed fetuses. Other studies should be encouraged for a better identification of the damage caused by the improper use of misoprostol, especially in countries where the control of medication is inadequate.

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  • Artigos Originais

    Low-dose vaginal misoprostol (12.5 versus 25 µg) for induction of labor at term

    Revista Brasileira de Ginecologia e Obstetrícia. 2007;29(12):639-646

    Summary

    Artigos Originais

    Low-dose vaginal misoprostol (12.5 versus 25 µg) for induction of labor at term

    Revista Brasileira de Ginecologia e Obstetrícia. 2007;29(12):639-646

    DOI 10.1590/S0100-72032007001200007

    Views0

    PURPOSE: to compare the effectiveness of low doses of vaginal misoprostol (12.5 versus 25 µg) for induction of labor. METHODS: a double-blind, randomized, controlled clinical trial was performed in Santa Casa de Misericórdia de Sobral, from May 2005 to April 2006. Sixty-two term pregnant women, with intact membranes and with indication for labor induction, were included. They randomly received 25 µg (32) or 12.5 µg (30) of vaginal misoprostol each four hours, until the maximum of eight doses. Mode of delivery, time between induction and delivery, perinatal complications, and maternal side effects were studied. The control variables were maternal and gestational ages, parity and Bishop score. The statistical tests used were average calculations, shunting line-standards and Student t-test (numerical continuous variables), chi2 (categorical variables) and Mann-Whitney test (discrete variables). RESULTS: the two groups, 12.5 and 25 µg, did not differ in relation to the interval of time between the induction onset and delivery (1524 versus 1212 min, p=0.333), in the frequency of vaginal delivery (70 versus 71.8%, p=0.720), Apgar scores below seven at the fifth minute (3,3 versus 6,25%, p=0.533) and tachysystole frequency (3.3 versus 9.3%, p=0.533). The average of total dose administered was significantly higher in the 25 µg group (40 versus 61.2 µg, p=0.03). CONCLUSIONS: vaginal misoprostol in the dose of 12.5 µg was efficient, with collateral effects similar, to the 25 µg of vaginal misoprostol, for induction of labor at term.

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  • Artigos Originais

    Sublingual versus vaginal misoprostol for labor induction of term pregnancies

    Revista Brasileira de Ginecologia e Obstetrícia. 2005;27(1):24-31

    Summary

    Artigos Originais

    Sublingual versus vaginal misoprostol for labor induction of term pregnancies

    Revista Brasileira de Ginecologia e Obstetrícia. 2005;27(1):24-31

    DOI 10.1590/S0100-72032005000100006

    Views1

    PURPOSE: to compare the effectiveness and safety of sublingual misoprostol (25 µg) versus vaginal misoprostol (25 µg) (Prostokos®) for labor induction with gestational age > 37 weeks and unripe cervices. METHODS: a randomized controlled clinical trial was performed at the Maternidade Monteiro de Morais (CISAM-UPE), in Recife - PE, Brazil, from October 2003 to February 2004. One hundred and twenty-three women with gestational age > 37 weeks, Bishop score <8, not in labor and with medical indication for interruption of pregnancy were included in this study. The women received randomly 25 µg sublingual misoprostol or 25 µg vaginal misoprostol every 6 h, not exceeding eight doses. In order to evaluate the differences between the groups, means, standard deviations, Student's t-test, c² trend and Mann-Whitney test were used. The statistical significance was considered to be 5%. RESULTS: there were no significant differences between the number of women with vaginal delivery in the sublingual group as compared with the vaginal group (65.5 vs 75.8%, p<0.22), or in the interval of time between the induction onset and delivery (24 h and 42 min vs 20 h and 37 min respectively, p=0.11). The two groups, sublingual and vaginal, also did not differ as to the hyperstimulation syndrome (1.7 vs 3.2%, p=0.95), meconium incidence (5.2 vs 4.8%, p=0.74), Apgar score <7 at 5 min (3.4 vs 4.8%, p=0.98) and other adverse effects. CONCLUSION: twenty-five micrograms of sublingual misoprostol every six h presented the same effectiveness and safety as an equal vaginally administered dose of this substance. Sublingual misoprostol seems to be acceptable and is another option to be considered for labor induction.

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    Sublingual versus vaginal misoprostol for labor induction of term pregnancies
  • Trabalhos Originais

    Association of the Use of Abortifacient Drugs with Congenital Malformations

    Revista Brasileira de Ginecologia e Obstetrícia. 2001;23(8):517-521

    Summary

    Trabalhos Originais

    Association of the Use of Abortifacient Drugs with Congenital Malformations

    Revista Brasileira de Ginecologia e Obstetrícia. 2001;23(8):517-521

    DOI 10.1590/S0100-72032001000800006

    Views6

    Purpose: to verify the association of the use of abortifacient drugs during the first 3 months of gestation with the occurrence of congenital malformations in live births. Patients and Methods: population-based case-control study through selection of the first six live births on a day, over the period of a year, at a public maternity in Salvador, Bahia, with a total of 800 cases. Studies were performed through investigation of birth records in the search of congenital malformation data, observation of selected malformed newborns, followed by interview with the mothers for collection of anamnesis data, by application of a questionnaire. Later on data were statistically evaluated by Epi-Info 5.0 software. Results: puerperae came from a low socialeconomic class (74.8%), without any or almost any schooling (61.1%). The general percentage of birth defects was estimated at 4.7%. Out of 800 puerperae, 16% reported abortifacient drug intake during the first 3 months of gestation and 10.9% of them had malformed babies. This incidence was 3.6% in children whose mothers denied the intake of any abortifacient drugs. Agents most commonly taken in those unsuccessful abortive attempts were misoprostol (Cytotec) and herbs, specially "alumã" (Vermonia baiensis Tol) and "espinho cheiroso" (Kanthoxilum shifolium Lam), which, according to the literature, do not really have any abortive effect. Conclusion: the study revealed the extension of intentional miscarriage in a low income population and showed that the occurrence of birth defects could be related to gestational exposure to misoprostol and herbal medicine intake.

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    Association of the Use of Abortifacient Drugs with Congenital Malformations

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