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Results for “Abortion, Selective”

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PubMed1995

Toxoplasmosis as a cause of repeated abortion.

The extent to which toxoplasmosis causes habitual abortion is still controversial. The present study was carried out on 100 cases of repeated abortions, and 40 multiparous pregnant women at 20th week gestation as a control. Tests for the presence of toxoplasma IgG and/or IgM antibodies were done for both groups. It was found that 19% of the selected cases, and 7.5% of the control were seropositive for IgM. The difference was statistically insignificant, therefore acute toxoplasmosis, most probably, is not related to habitual abortions, whereas 37% of the selected cases and only 10% of the control group were seropositive at high dilution for IgG antibody, this statistical significant difference indicates that chronic toxoplasmosis, most probably is a significant cause of repeated abortion. Also it has been found that toxoplasmosis has a significant relation to abortion at first trimester.

Abortion, Habitual↗

PubMed1995

[The detection of Toxoplasma gondii in abortion tissues of sheep using the polymerase chain reaction].

A polymerase chain reaction was applied to detect Toxoplasma gondii DNA in placental and fetal tissue samples of 47 unselected ovine abortions of the lambing season 1990/91 (Baden-Württemberg, Rhineland, Hesse). For the amplification a 190 bp or 223 bp sequence of the B1-gene of T. gondii was selected as the target sequence. Both sequences were detected in five abortions. All positive results were immunohistochemically confirmed using the peroxidase antiperoxidase technique (PAP-staining). Thus, in Germany, too, T. gondii infection in sheep during pregnancy should be considered as a possible cause of abortions, particularly in case of abortions of unknown genesis.

Abortion, Veterinary↗

PubMedDate not supplied

Immunological evaluation of patients with recurrent abortion.

In a prospective study, we performed immunological tests in patients with recurrent abortion. Nine couples with two or more fetal losses of no apparent cause were selected as the patient group, and nine volunteer couples with at least two children and without a history of abortion were used as controls. The frequency of major histocompatibility complex (human leukocyte antigens, HLA) antigen sharing was determined by serological methods, antipaternal antibodies by microlymphocytotoxicity, lymphocyte phenotypes (CD4, CD8, CD19, CD16, CD56 and HLA-DR positive cells) by flow cytometry and natural killer (NK) cytotoxicity by (51)Cr release. NK activity was correlated to the degree of HLA-C sharing and to the percentage of CD16+ and CD56+ cells and to progesterone levels measured by radioimmunoassay. No difference in class I or class II HLA antigen sharing was detected between couples with and without recurrent abortion. Antipaternal antibodies were not found in the serum of any woman of the study. A higher absolute number of CD8+ cells (P=0.01) and a trend to increased CD19+ cells (P=0.05) were observed among patients. NK activity did not differ between the two groups when expressed as specific cytotoxicity and it was reduced among patients with recurrent abortion when expressed as lytic units/10(7) cells (P=0.04). There was correlation between NK activity and the percentage of CD16+ and CD56+ cells but not with progesterone levels in patients with recurrent abortion. Our data suggest that an increased NK activity may not play a role in the occurrence of repeated abortion. On the other hand, an increase in circulating CD8+ T cells was observed in patients suggesting that antifetal cytotoxicity in recurrent abortion may be mediated by T cells and not by NK cells.

Abortion, Habitual↗

PubMed2003

Viability selection at three early life stages of the tropical tree, Platypodium elegans (Fabaceae, Papilionoideae).

Given the enormous number and high mortality of fertilized ovules in plants, it is possible that selection during the earliest stages of the life cycle plays an important role in shaping the genetic composition of plant populations. Previous research involving selection component analyses found strong evidence for viability selection in annual plant species. Yet despite this evidence, few attempts have been made to identify the magnitude and timing of viability selection as well as the mechanisms responsible for mortality among genotypes. Platypodium elegans, a Neotropical tree with high rates of early fruit mortality, represents an opportunity to study viability selection at a level of discernment not previously possible. Microsatellite markers were used to analyze the genetic composition of aborted embryos, as well as mature seeds and seedlings of the same cohort. While selection resulted in an overall decrease in self-fertilized progeny across each life stage, the greatest change in the genetic composition of progeny occurred between mature seeds and established seedlings. This suggested that inbreeding depression, and not late-acting self-incompatibility, was responsible for early selection. An investigation of the mature seed stage revealed that self-fertilized seeds weigh significantly less than outcrossed seeds. The result of this early selection conceals the mixed-mating system and high levels of inbreeding depression in Platypodium elegans, resulting in an apparently outcrossed adult population that does not differ significantly from Hardy-Weinberg expectations.

Alleles↗

PubMed2001

Ordeal of women for induced abortion in a rural area of Bangladesh.

The study was carried out to document the context of induced abortion, nature of its management, and post-abortion complications in Matlab, Bangladesh. The study included all 91 cases of induced abortion that took place in the study area from July to October 1995. Information was collected from women within 60 days after the abortion. A physician carried out in-depth interviews and physical examinations of 20 randomly-selected cases. The findings depicted a complex context, within which the women had to go for an abortion. In most cases, the complete lack of use or lack of use-effectiveness of family-planning methods resulted in unwanted pregnancies. The women in desperation sought abortion services from traditional sources first. When their conditions worsened, they contacted the available modern service facilities. At times, it was too late and led to serious health consequences. Limited access to safe abortion services, together with an absence of social support, put women in a life-threatening situation. Prevention of unwanted pregnancies and access to safe abortion services are needed to improve the situation.

Abortion, Induced↗

PubMed2004

Knowledge, behaviour and attitudes on induced abortion and family planning among Sri Lankan women seeking termination of pregnancy.

INTRODUCTION: In Sri Lanka over 500 induced abortions are done daily in spite of restrictive legislation. Experiences in other countries show that liberal laws alone have not solved the issues of induced abortions which may harm a woman's physical and mental health. OBJECTIVE: To determine the socio-demographic features of women seeking termination of pregnancy, and their knowledge, attitude and behaviour with respect to induced abortion and family planning. METHODS: A prospective study on a randomly selected group of 210 women attending a clinic in Colombo requesting termination of pregnancy. A pre-tested interviewer-administered questionnaire was used for data collection. RESULTS: Over 80% of women seeking abortion were between 20 and 40 years of age. All religions were represented. 13% were single and 10% wanted to postpone a pregnancy. 38.6% had three or more children. In 90% the period of gestation was less than 10 weeks. Presence of a young child was the commonest reason for termination, followed by poverty. Only 0.9% were due to incest and foetal abnormality. 96% were not aware of adverse effects of abortion. 91% thought that induced abortion was immoral and 94% did not know that it was illegal. 29% had previous terminations and post-abortion contraception counselling was poor. Although 78% were knowledgeable on at least one method of contraception, only 16.3% were using it regularly. DISCUSSION: A majority used induced abortion as a family planning method. Improving accessibility and the quality of family planning services is of paramount importance. Every encounter of a woman with a health care worker should be an opportunity for counselling.

Abortion, Induced↗

PubMed1978

Therapeutic abortion in late first trimester. Prostaglandin pretreatment compared with primary surgery.

One hundred randomly selected nulliparous women, 10-11 weeks pregnant, were submitted to either primary surgery (50 cases) or pretreatment overnight with vaginal suppositories of 15(S)15 methyl prostaglandin F2 alpha methyl ester (50 cases) followed by vacuum aspiration. No peroperative complications were recorded in either of the two groups. Thirtyfive of the 50 pretreated women aborted during the pretreatment period and a variable cervical dilatation was observed in the remaining 15 women of this group. The incidence of early postoperative pelvic infection tended to be less in the pretreated group as compared with the other group.

Abortifacient Agents, Nonsteroidal↗

PubMedDate not supplied

Induced abortion and social factors in wild horses.

Much evidence now suggests that the postnatal killing of young in primates and carnivores, and induced abortions in some rodents, are evolved traits exerting strong selective pressures on adult male and female behaviour. Among ungulates it is perplexing that either no species have developed convergent tactics or that these behaviours are not reported, especially as ungulates have social systems similar to those of members of the above groups. Only in captive horses (Equus caballus) has infant killing been reported. It has been estimated that 40,000 wild horses live in remote areas of the Great Basin Desert of North America (US Department of Interior (Bureau of Land Management), unpublished report), where they occur in harems (females and young) defended by males. Here I present evidence that, rather than killing infants directly, invading males induce abortions in females unprotected by their resident stallions and these females are then inseminated by the new males.

Abortion, Induced↗

PubMed2000

Immediate post-abortal insertion of intrauterine devices.

OBJECTIVES: To assess the safety and efficacy of IUD insertion immediately after spontaneous or induced abortion. SEARCH STRATEGY: We used Medline, Popline, and EMBASE computer searches, supplemented by review articles and contacts with investigators. SELECTION CRITERIA: We sought all randomized controlled trials that had at least one treatment arm that involved IUD insertion immediately after an induced abortion or after curettage for spontaneous abortion. We identified 12 trials which described random assignment but excluded three from this review. Two of these revealed unethical research conduct, and one used alternate assignment to treatments. DATA COLLECTION AND ANALYSIS: We evaluated the methodological quality of each report and abstracted information onto a data collection form. We focused on gross discontinuation rates (single-decrement life table analysis) for accidental pregnancy, perforation, expulsion, and pelvic inflammatory disease. We entered the data into RevMan 3.1 for analysis of Peto odds ratios. MAIN RESULTS: In large multicenter trials, the TCu 220C device proved superior to either the Lippes Loop D or the Copper 7 IUDs for immediate post-abortal insertion. The Peto OR for discontinuation for pregnancy was 0.4 (95% CI 0.2-0.7) compared with the Lippes Loop D and 0.5 (95% CI 0.3-0.8) compared with the Copper 7. Expulsions were also significantly less common with the TCu 220C than with the other two IUDs. In single-center trials, the Nova T IUD had a signicantly higher discontinuation rate for pregnancy than did the Multiload 250 (OR 4.5; 95% CI 1.0-19.8), while the Nova T had a significantly lower discontinuation rate for pregnancy than did the TCu 200 (OR 0.3; 95% CI 0.1-0.9). Only one trial compared immediate vs. delayed insertion. In this trial, the performance of the Copper 7 IUD inserted immediately after abortion was inferior to that after interval insertion (remote from pregnancy), although the differences were not statistically significant. Addition of copper sleeves to a Lippes Loop D improved its performance, but addition of a topical hydrogel to a Spring Coil did not offer benefit. Overall, rates of perforation and pelvic inflammatory disease were low. REVIEWER'S CONCLUSIONS: Insertion of an IUD immediately after abortion is both safe and practical. This was true for both induced and reported "spontaneous" abortions, many of which may have been induced under clandestine circumstances. IUD expulsion rates were higher after second-trimester abortions than after earlier abortions, so delaying insertion may be advisable after later abortions. Although Copper 7 devices inserted unrelated to pregnancy may perform better than those inserted after abortion, many women who express interest in intrauterine contraception do not return for the scheduled insertion. These women may remain unprotected against unintended pregnancy. However, evidence is inadequate to compare the safety and efficacy of IUD insertion immediately after abortion vs. insertion some weeks later.

Abortion, Induced↗

PubMed1986

[Population genetics study of the differential fertility in urban populations].

In an urban population with widespread birth control practice the distribution of the number of pregnancies, births and abortions was studied in a cohort of women of completed fertility. The mean number of pregnancies per woman was 4.03 +/- 0.08 (sigma = = 2.98); the mean number of births - 1.12 +/- 0.02 (sigma = 0.77). 7.4% of women which had completed their reproductive performance had no pregnancies and 19.5% - no births. The Crow's Index of the Opportunity for Selection and its components connected with differential fertility and differential mortality were estimated. In the population under study two components of selection - selection at the prenatal stages and selection associated with infertility - are shown to be still significant. Such type of selection is exemplified by investigation of couples suffering from repeated spontaneous abortions.

Abortion, Habitual↗

PubMed2003

Contraception: from accessibility to efficiency.

BACKGROUND: Despite the widespread use of medical contraception in France, the prevalence of abortion remains stable. A cross-sectional population-based survey was designed to study the characteristics of current contraceptive use in France, the different types of contraceptive failure, and the reasons reported for not using contraception. METHODS: A representative sample of 14 704 French households was randomly selected from the telephone directory. All women who in the last 5 years had had an abortion or whose last pregnancy was unintended were selected (n = 1034), whilst a fraction (n = 1829) of the other women were randomly selected. Altogether, 2863 women answered the questionnaire. RESULTS: Only 2.7% of the women aged 18-44 years who did not wish to conceive and were sexually active did not use any contraception. However, 33% of pregnancies were estimated to be unplanned, of which 50% ended in an abortion. A total of 65% of the reported unplanned pregnancies occurred among women using contraception (21% the pill, 9% IUD, 12% condoms, 23% other method). The main reasons given for these contraceptive failures were the misuse of the methods or the failure of the partner to withdraw. Reasons for not using any contraception go beyond a simple lack of information. CONCLUSIONS: The importance of-and the reasons mentioned for-contraceptive failure show a misadaptation between women's contraceptive needs and the method they use. Improving the training of family planning providers remains a major goal to ensure that women use a contraceptive method that fits their social and sexual lifestyle.

Abortion, Induced↗

PubMed1998

Patterns of induced abortion in urban area of southeastern region, Brazil.

OBJECTIVE: To assess the behavior of induced abortion as a function of certain demographic variables, for the population of fertile women (15 to 49 years old) residing in the Vila Madalena subdistrict S. Paulo (Brazil). MATERIAL AND METHOD: Two population samples were selected. One sample, with 996 women, investigated the incidence of induced abortions during 1987, using the RRT. In the other, involving 1,004 women, the same information was detected through a conventional approach. In both samples, the induced abortion occurring during the reproductive life was recorded in direct fashion. Though this analysis refers only to information about past abortions, that is by 2,000 women-, it should be noted that it is exactly the RRT that lends credibility to the found or results given results. CONCLUSION: The analysis furnishes evidence showing that single women, young women between the ages of 15 and 19, women who have not had live births, women who have a number of children below the expected ideal, women who use contraceptive methods (especially inefficient ones) and women who do not have any restrictions as to abortion constitute the categories most inclined to resort to induced abortion. This grouping suggests the existence of interrelationships between categories, that is, each of these categories is probably composed primarily of the same women, those who are at the beginning of their reproductive lives.

Abortion, Illegal↗

PubMed1978