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Vaginal dinoprostone versus oral misoprostol for predilatation of the cervix in first trimester surgical abortion.

Prostaglandins are effective in predilatation of the cervix prior to first trimester surgical termination of pregnancy under local analgesia. Arandomized open comparative trial was devised to compare the effectiveness and acceptability of vaginal dinoprostone with oral misoprostol. Two groups were randomized to control for age, parity and ethnicity. The operation was easier and less painful in older, parous, and Polynesian women. Both methods were effective with respect to ease of dilatation. Both were acceptable and equal with respect to the level of pain experienced by the woman during the operation. Vaginal dinoprostone is more gradual in its action, but it is more expensive, has to be refrigerated and self-insertion may sometimes cause problems. Oral misoprostol is considerably cheaper and does not require refrigeration, but it was associated with more preoperative nausea, cramping and occasional heavy bleeding.

Abortifacient Agents, Nonsteroidal↗

A randomised trial of oral versus vaginal administration of misoprostol for the purpose of mid-trimester termination of pregnancy.

A prospective randomised controlled trial was undertaken to compare the efficacy of two routes of administration, oral versus vaginal, of the prostaglandin E1 analogue misoprostol (Cytotec) to effect termination of pregnancy in the mid-trimester. Fifty-five women were recruited into the trial; 26 to receive all doses orally and 29 via the vaginal route. The dosing regimen was 400 microg as the initial dose followed by a second dose of 200 microg two hours later and then four-hourly 200 microg doses until delivery or 32 hours from commencement of treatment. If delivery had not been effected by the last dose of misoprostol, a Syntocinon infusion was started synchronously Misoprostol administered vaginally was significantly more effective than when administered orally as judged by induction-to-delivery interval and also the need or otherwise to augment therapy with a Syntocinon infusion. The average induction-to-delivery interval was 17.5 hours in the vaginal group compared to 33 hours in the oral group (p = 0.0003). The percentages of women who delivered at 24 and 48 hours were 93% and 100% in the vaginal administration group and 19% and 70% in the oral administration group (p < 0.05). No significant differences in complication rates or side effects were noted between the two groups

Abortifacient Agents↗

The nurse's role in misoprostol induction: a proposed protocol.

The use of misoprostol (PGE 1) for induction of labor has been studied in the United States since 1993. The current medical literature contains studies of this non-FDA-approved indication for misoprostol. The data reveal that misoprostol is as effective or more effective in inducing labor as are oxytocin and prostaglandin E2 (PGE 2), with less cost. Nurses need to understand the physiology of prostaglandins and management of misoprostol in labor. Nurses often must assess the safety of mother and fetus during a misoprostol induction without a protocol based on research findings. This article presents a sample protocol.

Administration, Intravaginal↗

The use of progesterone administered intravaginally and pregnant mare serum gonadotrophin given by injection in controlled breeding programs in beef and dairy cattle.

Five experiments involving 1,244 cows and heifers were carried out to investigate the factors which might influence the calving performance to fixed-time artificial insemination following intravaginal administration of progesterone (PRID) and intramuscular injection of pregnant mare serum gonadotrophin (PMSG). Factors examined were duration of PRID treatment, time of treatment after calving, time and dose PMSG and lactational status. Experiments 1, 2 and 3 were carried out on milked Friesian cows, experiment 4 on Friesian heifers and experiment 5 on suckled and dry Herefords. All cows were inseminated once with frozen/thawed semen 54 to 58 h or 46 to 50 h after completion of PRID treatment. Overall there was a progressive increase in calving rates with an increase in the duration of treatment from 12 to 14 to 16 days but there was little or no effect of time after calving (4 v 7 weeks) at which treatment was commenced. The poorer calving performance of cows treated for 12 to 14 days was associated with relatively high peripheral levels of plasma progesterone at the time of the PRID removal, suggesting the presence at the end of treatment of residual secretory luteal tissue. There was an effect on calving performance of PMSG given at the time of PRID removal but its effect varied according to the duration of PRID treatment. After 12 days treatments (experiments 1 and 5) PMSG had little effect, whereas after 14 days treatments, 0, 500 and 750 IU PMSG gave calving rates of 27%, 40% and 46% in experiment 2 and 5%, 24% and 38% in experiment 5.(ABSTRACT TRUNCATED AT 250 WORDS)

Animal Husbandry↗

Antiviral activity of Win 41258-3, a pyrazole compound, against herpes simplex virus in mouse genital infection and in guinea pig skin infection.

Win 41258-3 (4-[6-(2-chloro-4-methoxyphenoxy)hexyl]-3,5-diethyl-1H-pyrazole methane sulfonate) has in vitro and in vivo activity against herpes simplex virus types 1 and 2. In cell culture, a concentration of 2 microgram/ml produced a greater than 50% inhibition of plaque formation of herpes simplex virus type 2, and 3 microgram/ml produced a 100% reduction of herpes simplex virus type 1. Win 41258-3 was effective against herpes simplex virus types 1 and 2 in mouse genital infection after intravaginal administration. Win 41258-3 was administered to mice at 4 h postinfection with solutions containing 1.25, 2.5, 5, or 10% of the compound in saturated tampons. Therapy resulted in a high survival rate (80 to 100%) of treated animals versus 20 to 30% of placebo-treated controls. Win 41258-3 was also effective in guinea pig skin infection produced by herpes simplex virus type 1. Solutions of 2.5, 5, and 10% Win 41258-3, applied to the skin starting 24 h postinfection, resulted in rapid suppression of development of herpetic vesicles and significant reduction of the virus titers in the lesion sites.

Animals↗

Evaluations of unformulated and formulated dendrimer-based microbicide candidates in mouse and guinea pig models of genital herpes.

Prevention of sexually transmitted infections is a priority in developed and developing countries. One approach to prevention is the use of topical microbicides, and one promising approach is the use of dendrimers, highly branched macromolecules synthesized from a polyfunctional core. Three new dendrimer products developed to provide stable and cost-efficient microbicides were initially evaluated in vitro for anti-herpes simplex virus activity and then in vivo by using a mouse model of genital herpes. From these experiments one product, SPL7013, was chosen for further evaluation to define the dose and duration of protection. Unformulated SPL7013 provided significant protection from genital herpes disease and infection at concentrations as low as 1 mg/ml and for at least 1 h following topical (intravaginal) administration of 10 mg/ml. This compound was then formulated into three vehicles and further evaluated in mouse and guinea pig models of genital herpes infection. In the murine evaluations each of the formulations provided significant protection at concentrations of 10 and 50 mg/ml. Formulated compounds provided protection for at least 1 h at a concentration of 10 mg/ml. From these experiments formulation 2V was chosen for dose ranging experiments using the guinea pig model of genital herpes. The guinea pig evaluations suggested that doses of 30 to 50 mg/ml were required for optimal protection. From these studies a lead compound and formulation (2V of SPL7013) was chosen for ongoing evaluations in primate models of simian immunodeficiency virus and Chlamydia trachomatis infection.

Animals↗

Effect of lactobacillus in preventing post-antibiotic vulvovaginal candidiasis: a randomised controlled trial.

OBJECTIVE: To test whether oral or vaginal lactobacillus can prevent vulvovaginitis after antibiotic treatment. DESIGN: Randomised, placebo controlled, double blind, factorial 2x2 trial. SETTING: Fifty general practices and 16 pharmacies in Melbourne, Australia. PARTICIPANTS: Non-pregnant women aged 18-50 years who required a short course of oral antibiotics for a non-gynaecological infection: 278 were enrolled in the study, and results were available for 235. INTERVENTIONS: Lactobacillus preparations taken orally or vaginally, or both, from enrollment until four days after completion of their antibiotic course. MAIN OUTCOME MEASURES: Participants' reports of symptoms of post-antibiotic vulvovaginitis, with microbiological evidence of candidiasis provided by a self obtained vaginal swab. RESULTS: Overall, 55/235 (23% (95% confidence interval 18% to 29%)) women developed post-antibiotic vulvovaginitis. Compared with placebo, the odds ratio for developing post-antibiotic vulvovaginitis with oral lactobacillus was 1.06 (95% confidence interval 0.58 to 1.94) and with vaginal lactobacillus 1.38 (0.75 to 2.54). Compliance with antibiotics and interventions was high. The trial was terminated after the second interim analysis because of lack of effect of the interventions. Given the data at this time, the chances of detecting a significant reduction in vulvovaginitis with oral or vaginal lactobacillus treatment were less than 0.032 and 0.0006 respectively if the trial proceeded to full enrollment. CONCLUSIONS: The use of oral or vaginal forms of lactobacillus to prevent post-antibiotic vulvovaginitis is not supported by these results. Further research on this subject is unlikely to be fruitful, unless new understandings about the pathogenesis of post-antibiotic vulvovaginitis indicate a possible role for lactobacillus.

Administration, Intravaginal↗

Oral misoprostol for induction of labour at term: randomised controlled trial.

OBJECTIVE: To compare oral misoprostol solution with vaginal prostaglandin gel (dinoprostone) for induction of labour at term to determine whether misoprostol is superior. DESIGN: Randomised double blind placebo controlled trial. SETTING: Maternity departments in three hospitals in Australia. Population Pregnant women with a singleton cephalic presentation at > or = 36+6 weeks' gestation, with an indication for prostaglandin induction of labour. INTERVENTIONS: 20 mug oral misoprostol solution at ourly intervals and placebo vaginal gel or vaginal dinoprostone gel at six hourly intervals and placebo oral solution. MAIN OUTCOME MEASURES: Vaginal birth within 24 hours; uterine hyperstimulation with associated changes in fetal heart rate; caesarean section (all); and caesarean section for fetal distress. RESULTS: 741 women were randomised, 365 to the misoprostol group and 376 to the vaginal dinoprostone group. There were no significant differences between the two treatment groups in the primary outcomes: vaginal birth not achieved in 24 hours (misoprostol 168/365 (46.0%) v dinoprostone 155/376 (41.2%); relative risk 1.12, 95% confidence interval 0.95 to 1.32; P = 0.134), caesarean section (83/365 (22.7%) v 100/376 (26.6%); 0.82, 0.64 to 1.06; P = 0.127), caesarean section for fetal distress (32/365 (8.8%) v 35/376 (9.3%); 0.91, 0.57 to 1.44; P = 0.679), or uterine hyperstimulation with changes in fetal heart rate (3/365 (0.8%) v 6/376 (1.6%); 0.55, 0.14 to 2.21; P = 0.401). Although there were differences in the process of labour induction, there were no significant differences in adverse maternal or neonatal outcomes. CONCLUSIONS: This trial shows no evidence that oral misoprostol is superior to vaginal dinoprostone for induction of labour. However, it does not lead to poorer health outcomes for women or their infants, and oral treatment is preferred by women. TRIAL REGISTRATION: National Health and Medical Research Council, Perinatal Trials, PT0361.

Administration, Intravaginal↗

Managing recurrent bacterial vaginosis.

Bacterial vaginosis (BV) is the most frequently found condition of the female genital tract. It increases a woman's risk of acquiring HIV, is associated with increased complications in pregnancy, and may be involved in the pathogenesis of pelvic inflammatory disease. Yet there are many unanswered questions about its aetiology, making management of recurrent infection difficult and often idiosyncratic. This paper discusses the current knowledge and possible management of recurrent BV.

Administration, Intravaginal↗

25 mg or 50 mg of oral methotrexate followed by vaginal misoprostol 7 days after for early abortion: a randomized trial.

BACKGROUND: Several combinations of oral or intravenous methotrexate plus vaginal misoprostol have been used for early abortion with success rates varying widely. So far, any study has evaluated the efficacy and safety of lower doses of oral methotrexate followed by vaginal misoprostol for early abortion. OBJECTIVES: To evaluate the efficacy and safety of methotrexate 25 or 50 mg orally and 800 micrograms of misoprostol vaginally 7 days after the methotrexate for abortion at </=56 days of gestation. STUDY DESIGN: Three-hundred and ten pregnant women seeking elective abortion were randomly allocated to receive 25 mg (group I) or 50 mg (group II) of methotrexate orally and 800 micrograms of misoprostol vaginally 7 days after the methotrexate. The misoprostol dose was repeated 48 and 96 h later if the abortion did not occur. Outcome measures included successful abortion (complete abortion without requiring a surgical procedure), side effects and vaginal bleeding. Relative risks were used for the comparison between the outcomes from both treatment regimens. RESULTS: In group I aborted 135/148 cases (91%, 95% CI 85, 95%), and 139/154 cases (90%, 95% CI 84, 94%) aborted in group II (relative risk [RR] = 1.01, RR 95% CI 0.94, 1.09). CONCLUSIONS: The two treatment regimens showed the same efficacy and safety, so it would be advisable at least to use the smaller methotrexate dose, i.e. 25 mg.

Abortifacient Agents, Nonsteroidal↗

Misoprostol 50 microg sublingually versus vaginally for labor induction at term: a randomized study.

OBJECTIVE: To compare the efficacy of misoprostol 50 mug vaginally and 50 mug sublingually for labor induction at term. MATERIALS AND METHODS: One hundred and sixty women were randomized to receive misoprostol 50 microg vaginally (n = 80) or 50 microg sublingually misoprostol (n = 80). The doses were given every 4 h (maximum 6 doses). Primary outcome measure was number of cesarean deliveries. Induction to delivery time, delivery within 24 h, the number of misoprostol doses given; the need for oxytocin augmentation, tachysystole and uterine hyperstimulation rates and neonatal outcomes were secondary outcome measures. RESULTS: The mean induction to delivery time was 748 +/- 379 min in the vaginal group and 711 +/- 425 in the sublingual group (p = 0.56). The number of women delivering within 24 h was 73 (91.3%) in the vaginal group and 74 (92.5%) in the sublingual group (p = 0.78). The mean number of misoprostol doses required was significantly higher in the sublingual group (1.9 +/- 1.2) compared with the vaginal group (1.1 +/- 0.4; p < 0.001). More women in the sublingual group experienced tachysystole (n = 14, 17.5%) compared with the vaginal group (n = 3, 3.8%; p = 0.005). Seven cases (8.8%) in the vaginal group and 12 cases in the sublingual group (15%) required emergent cesarean delivery for fetal heart rate abnormalities (p = 0.22). Other neonatal outcomes including umbilical artery pH, Apgar scores and intensive care unit admission were similar in the two groups. CONCLUSION: Sublingual misoprostol is as efficacious as vaginal misoprostol for induction of labor. More frequent tachysystole is observed with misoprostol 50 microg sublingually, but neonatal outcomes are similar.

Administration, Intravaginal↗

Efficacy of two regimens of misoprostol for early second-trimester pregnancy termination.

OBJECTIVE: To compare the efficacy of a combined regimen of misoprostol with vaginal misoprostol for early 2nd-trimester pregnancy termination. METHODS: This is a prospective study that includes 79 pregnant women who requested legal termination of 2nd-trimester pregnancy between 13 and 22 weeks. Two regimens of misoprostol were used. Group 1: 400 microg of oral plus 400 microg vaginal misoprostol every 8 h (combined regimen) and group 2: 400 microg of vaginal misoprostol every 3 h up to a maximum of five doses (vaginal regimen). RESULTS: The induction-to-abortion interval was significantly longer in group 1 (25.5 +/- 24.45 h) than in group 2 (15 +/- 7.14 h) (p = 0.016). The abortion rate within 24 h in group 1 was of 56.8 vs. 85.7% in group 2 (p = 0.006). The hazard rate for vaginal delivery within 24 h was found to be 2.277-fold greater in the group with the combined therapy once controlled for plausible confounders. CONCLUSIONS: Our study suggests that oral misoprostol combined with vaginal misoprostol does not reduce the induction-to-abortion interval compared to an exclusively vaginal route when used for early 2nd-trimester pregnancy termination.

Abortifacient Agents, Nonsteroidal↗

Influence of vehicle on topical efficacy of 2-acetylpyridine thiosemicarbazone and related derivatives on in vivo type 2 herpes simplex virus infections.

2-Acetylpyridine semicarbazone (APSC), 2-acetylpyridine thiosemicarbazone (APTSC) and 2-acetylpyridine-4-methyl-3-thiosemicarbazonoe (APMTSC) were evaluated against type-2 herpes simplex virus (HSV-2)-induced genitalis and encephalitis in mice and guinea pigs. The antiviral activity of these compounds was compared with that of acyclovir. With 1,3-butanediol as a topical treatment vehicle, 1% APSC and APTSC showed significant activity against the genital infection in mice, as evidenced by increased survivors and decreased severity of vaginal lesions. Reduced titers of virus recovered from the lesions were also observed with APTSC treatments. Eight different commercially available vehicles were compared to determine in which topically administered 1% APTSC would be most efficacious against the vaginal disease induced in mice. Significant results were observed with Squibb cream base, Eucerin base, and K-Y jelly; these effects were essentially equivalent to using 1,3-butanediol Unibase, Aquaphor, polyethylene glycol, polyvinyl alcohol and petrolatum were less effective as carrier vehicles. The herpesvirus genital infection in guinea pigs was treated with 1% APMTSC and APTSC comparing Squibb cream, Eucerin and K-Y jelly bases; while neither compound exerted striking effects against this infection in any vehicle, 1% APMTSC in Squibb cream was effective in increasing mean survival time and reducing lesion score and titers of recoverable virus. In this experiment, treatments with 1 and 5% acyclovir in polyethylene glycol base were effective in reducing titers of virus from the vaginal area. Orally administered APTSC (12.5, 25, 50 mg/kg/day given twice daily for 7 days) caused moderate prevention of death of mice infected intraperitoneally with HSV-2; subcutaneous injection of the compound was markedly effective with efficacy comparable to that of acyclovir at 120 mg/kg/day.

Administration, Intravaginal↗

Bacteriological epidemiology and treatment of bacterial vaginosis.

One hundred symptomatic women with clinical bacterial vaginosis (BV) were enrolled in this study. The bacteriological epidemiology of BV and efficacy of oral or vaginal administration of antimicrobial agents for treatment of BV were investigated. The epidemiology of BV was investigated before antimicrobial therapy. Fifty patients were treated with oral administration of metronidazole (MTN), 500 mg twice a day, and 50 patients with 2% clindamycin (CLDM) phosphate in a vaginal cream, 5 g once a day for 7 days. The major organisms occurring were Streptococcus agalactiae, Escherichia coli, Gardnerella vaginalis, Peptostreptococcus species, Bacteroides species, Prevotella species, and Mobiluncus species and opportunistic pathogens such as Staphylococcus epidermidis and Enterococcus faecalis. The therapeutic efficacy of CLDM cream on BV appeared to be preferable to oral MTN from clinical and bacteriological aspects. The clinical and bacteriological effectiveness of MTN and CLDM in the treatment of BV suggests that anaerobes might play a major role in causing the clinical symptoms in patients with BV.

Administration, Intravaginal↗

Comparative study on vaginal or oral treatment of bacterial vaginosis.

The bacterial epidemiology of bacterial vaginosis (BV) and the efficacy of vaginal or oral treatment of BV with clindamycin (CLDM) were investigated. The epidemiology of BV was investigated in 100 symptomatic women before CLDM therapy. Two groups consisting of 50 patients each with the diagnosis of symptomatic BV were treated with either oral administration of 450 mg CLDM three times daily or 2% CLDM phosphate in vaginal cream (self-made) 5 g once a day, for 7 days. There was no significant differences in efficacy among vaginal and oral therapies with CLDM. Vulvovaginal irritation occurred in 3 patients orally treated and in 1 patient vaginally treated. Gastrointestinal disturbances were observed in 4 orally treated patients. A slight abnormal elevation of the glutamine-oxaloacetic transaminase level was also found in 1 patient orally treated. Since there were no statistically significant differences in efficacy rates between vaginal and oral CLDM treatments, we favor vaginal treatment of BV, based on less adverse effects.

Administration, Intravaginal↗