Abstract:
:Plasma concentrations of levonorgestrel, progesterone, estradiol, FSH and LH were measured in seven volunteers who had a levonorgestrel-releasing IUD inserted postmenstrually. Blood samples were collected twice weekly during a mean of 93 days immediately postmenstrually and during a mean of 41 days over the twelfth to fifteenth month of treatment. Patterns of bleeding were studied during the first year of treatment. The IUDs used were designed to release 25 micrograms/day of levonorgestrel. The mean +/- SD plasma concentration of levonorgestrel for all subjects during the first three months was 260 +/- 68 pg/ml, and 129 +/- 28 pg/ml after one year of treatment. During the initial period of blood sampling only two of the subjects ovulated, while only two did not ovulate after one year of treatment. Intermenstrual spotting occurred during the first sixty days of treatment. Three subjects developed amenorrhea at the end of the first year. All the subjects continued the use of the IUD and no pregnancies occurred. :Steroid profiles of women wearing levonorgestrel-containing IUDs during the first 3 months of treatment were compared with those from the same subject after 1 year of treatment. Bleeding patterns were also studied in the 7 volunteers in this study. Plasma concentrations of levonorgestrel, progesterone, estradiol, follicle stimulating hormone, and luteinizing hormone were assayed in blood samples collected 2 times/week during a mean of 93 days immediately postmenstrually and during a mean of 41 days over the 12th-15th month of treatment. The medicated IUDs were designed to release 25 mcg of steroid per day. Steroid profiles showed that during the initial period of blood sampling only 2 subjects ovulated, but by 1 year only 2 of 7 had not ovulated. Levonorgestrel concentrations (mean) were 260+ or -68 pg/ml during the first 3 months and 129+ or -28 pg/ml at the end of 1 year of treatment. After the 1-year trial, all subjects continued using the medicated IUD and no pregnancies have occurred. Bleeding side effects were mostly spotting and intermenstual bleeding during the first 60 days of treatment; however, 3 subjects had developed amenorrhea by the end of the first year of treatment.
journal_name
Contraceptionjournal_title
Contraceptionauthors
Nilsson CG,Lähteenmäki P,Luukkainen Tdoi
10.1016/0010-7824(80)90003-7subject
Has Abstractpub_date
1980-03-01 00:00:00pages
225-33issue
3eissn
0010-7824issn
1879-0518pii
0010-7824(80)90003-7journal_volume
21pub_type
杂志文章相关文献
CONTRACEPTION文献大全abstract:OBJECTIVE:The gold standard for measuring oral contraceptive (OC) pharmacokinetics is the 24-h steady-state area under the curve (AUC). We conducted this study to assess whether limited sampling at steady state or measurements following use of one or two OCs could provide an adequate proxy in epidemiological studies fo...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/j.contraception.2016.12.007
更新日期:2017-04-01 00:00:00
abstract::This randomized, double-blind, placebo-controlled exploratory study examined the efficacy and safety of a low-dose oral contraceptive (Mircette), desogestrel/ethinyl estradiol [DSG/EE] and ethinyl estradiol [EE]) in relieving the symptoms of dysmenorrhea. Twenty-three clinics in the United States enrolled 77 women (ag...
journal_title:Contraception
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0010-7824(02)00414-6
更新日期:2002-12-01 00:00:00
abstract:BACKGROUND:We sought to determine whether there are differences in subject's motivation to participate in hormonal and barrier method contraceptive efficacy studies. STUDY DESIGN:All women presenting for screening appointments for either barrier or hormonal contraceptive efficacy trials were asked to complete a survey...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/j.contraception.2009.03.015
更新日期:2009-09-01 00:00:00
abstract:BACKGROUND:In response to concerns about serious infections following medical abortion, in early 2006 the Planned Parenthood Federation of America changed the route of misoprostol administration from vaginal to buccal and required either routine antibiotic coverage or universal screening and treatment for chlamydia; in...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/j.contraception.2010.08.022
更新日期:2011-04-01 00:00:00
abstract::The aim of this study was to determine the effect of a short-term ethinyl estradiol/levonorgestrel medication on blood flow in the uterine arteries in postmenopausal women in a prospective placebo-controlled double-blind study. Twenty-one healthy postmenopausal woman at least 2 years after menopause received 60 microg...
journal_title:Contraception
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0010-7824(97)00122-4
更新日期:1997-09-01 00:00:00
abstract:OBJECTIVE:To compare the effectiveness of outpatient medical abortion with mifepristone 200 mg and two misoprostol 800 mcg doses at 64-70 and 71-77 days of gestation. STUDY DESIGN:We conducted a retrospective chart review of medical abortion outcomes among clients with 64-77 day gestations at a Mexico City public clin...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/j.contraception.2020.05.012
更新日期:2020-08-01 00:00:00
abstract::The temporal effects of oral administration of cyproterone acetate (CPA), a progestational androgen receptor blocker, were studied on the fertility of adult male rat sires, at a dose of 20 mg kg-1 day-1 after 15 days of gavage. The treatment reduced the fertility and weights of accessory sex glands, without altering t...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/j.contraception.2004.11.003
更新日期:2005-05-01 00:00:00
abstract:BACKGROUND:Globally, 14.3% of women of reproductive age use intrauterine contraception (IUC), but the distribution of IUC users is strikingly nonuniform. In some countries, the percentage of women using IUC is <2%, whereas in other countries, it is >40%. Reasons for this large variation are not well documented. The aim...
journal_title:Contraception
pub_type: 杂志文章,评审
doi:10.1016/j.contraception.2013.11.011
更新日期:2014-03-01 00:00:00
abstract:OBJECTIVE:To describe the role of worksite characteristics, job role and abortion stigma in clinical abortion workers' occupational stress. STUDY DESIGN:We recruited nurses, medical assistants and counseling staff who provide abortion care at five hospitals and four freestanding clinics in Massachusetts. Study instrum...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/j.contraception.2018.07.003
更新日期:2018-12-01 00:00:00
abstract::The use of multiple clips for the occlusion of the Fallopian tubes has been reported in interval laparoscopic sterilization, but the circumstances leading to the performance of the multiple-clip procedure and its effects on safety and efficacy have not been carefully studied. A data set from international multi-center...
journal_title:Contraception
pub_type: 临床试验,杂志文章
doi:10.1016/0010-7824(94)90058-2
更新日期:1994-11-01 00:00:00
abstract::This report combines the data obtained in three multicenter efficacy studies with a new triphasic oral contraceptive combination containing desogestrel (DSG) and ethinyl estradiol (EE). The studies were conducted at 40 investigational sites in the United States (38 centers) and Canada (2 centers) in support of the FDA...
journal_title:Contraception
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1016/0010-7824(93)90078-l
更新日期:1993-10-01 00:00:00
abstract:OBJECTIVE:To explore perspectives on family planning among young people who perceive they are infertile or will have difficulty carrying a pregnancy to term owing to medical conditions or procedures. METHODS:This exploratory analysis examined pregnancy plans and contraceptive behavior among 12 young adults with a diag...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/j.contraception.2019.03.046
更新日期:2019-07-01 00:00:00
abstract::The objective of this study was to compare cycle control, efficacy and tolerance of an oral contraceptive containing 20 microg ethinylestradiol and 150 microg desogestrel with a preparation containing 30 microg ethinylestradiol combined with 75 microg gestodene. This study involved 342 women and 4104 cycles use in Arg...
journal_title:Contraception
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1016/s0010-7824(00)00153-0
更新日期:2000-09-01 00:00:00
abstract:BACKGROUND:Ethinyl estradiol (EE) and progestins have the ability to alter endothelial function. The type of progestin and the ratio of EE to progestin used in oral contraceptive pills (OCPs) may determine how they affect the arterial vasculature. STUDY DESIGN:In this study, we investigated endothelial function across...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/j.contraception.2008.07.025
更新日期:2009-01-01 00:00:00
abstract::9-Deoxo-16, 16-dimethyl-9-methylene-PGE2 is a new prostaglandin analogue which is stable in suppository form. Estimates of potential for gastrointestinal side effects in monkey in vivo indicated that the frequency of diarrhea was low with retention of uterine stimulating potency. In the present study the effect of the...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/0010-7824(80)90059-1
更新日期:1980-08-01 00:00:00
abstract:BACKGROUND:The benefits of social support in post-surgical recovery are well documented; social support decreases preoperative stress and postoperative recovery time. However, a paucity of studies have examined the effect of social support in the context of pregnancy termination. This study is the first to examine the ...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/j.contraception.2010.07.019
更新日期:2011-03-01 00:00:00
abstract:OBJECTIVE:To understand knowledge, current practices, barriers and facilitators for pharmacists prescribing emergency contraception (EC). STUDY DESIGN:We conducted a cross-sectional survey among California community pharmacists. We distributed the online survey, consisting of 34 close-ended questions, to members of th...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/j.contraception.2019.08.012
更新日期:2019-12-01 00:00:00
abstract::Blood pyrodoxine hydrochloride (vitamin-B6) concentration was determined in 50 women using combined oral contraceptives (OCs), 24 women who received an intramuscular injection of 150 mg medroxyprogesterone acetate (MPA) every 12 weeks, and in 14 women who used an intrauterine device (IUD) at the out-patient contracep...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/0010-7824(74)90078-x
更新日期:1974-04-01 00:00:00
abstract::A polymeric controlled release vaginal delivery system was developed for 15(S)15-methyl PGF2 alpha methyl ester. This delivery system is a reservoir-type device consisting of laminated membranes that are mounted on an inert holder. The delivery systems were designed to have in vitro steady-state release rates of 50 or...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/0010-7824(83)90085-9
更新日期:1983-02-01 00:00:00
abstract::A prospective randomized trial was conducted in 140 women to compare the efficacy of vaginal gemeprost with vaginal misoprostol for termination of second trimester pregnancy. Women requesting termination of second trimester pregnancy were randomized into two groups. Group A women were given 1 mg vaginal gemeprost ever...
journal_title:Contraception
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0010-7824(98)00099-7
更新日期:1998-10-01 00:00:00
abstract::Ovarian function, bleeding patterns and serum lipoproteins were studied in women using contraceptive vaginal rings (CVRs) of dimethyl-polysiloxane impregnated with steroids. The different CVRs were used for about 10 cycles each. The following groups were studied, with the daily steroid dosage given in parentheses. Wom...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/0010-7824(83)90033-1
更新日期:1983-10-01 00:00:00
abstract::A 10% sample of the data from East China from the two-per-thousand fertility and contraception survey of the Chinese State Family Planning Committee was analysed to study determinants of contraceptive choice in three situations: after first surviving delivery; before first abortion after first surviving delivery; and ...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/0010-7824(93)90022-y
更新日期:1993-06-01 00:00:00
abstract::First year results of a randomized study of 1509 users of the Copper T380Ag with a silver core or of an IUD releasing 20 mcg day of levonorgestrel are reported. The cumulative gross pregnancy rate for each device was 0.3 per 100 at one year, with more than 490 women having one year of use with each device. The levonor...
journal_title:Contraception
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/0010-7824(84)90036-2
更新日期:1984-11-01 00:00:00
abstract::New studies linking use of oral contraceptives (OCs) containing a third generation progestogen with venous thromboembolism (VTE) have stirred controversy. Epidemiologists face the task of separating a direct effect of the OC from the confounding effect of a pre-existing factor (e.g., smoking). Only 1-2% of VTE cases...
journal_title:Contraception
pub_type: 评论,社论
doi:10.1016/0010-7824(96)00111-4
更新日期:1996-07-01 00:00:00
abstract::This prospective, open-label, randomized trial of healthy adult women up to 9 weeks pregnant compared mifepristone 200 mg followed 2 days later with misoprostol 400 microg orally versus misoprostol 800 microg vaginally. The study was interrupted after the oral misoprostol group experienced a higher than expected failu...
journal_title:Contraception
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1016/s0010-7824(02)00366-9
更新日期:2002-10-01 00:00:00
abstract::Cancer incidence in countries representative of three patterns of reproductive cancer and age-specific mortality was used to estimate the effect of oral contraceptive use on the lifetime probability of reproductive cancer under three sets of assumptions about the effects of oral contraceptives. Under the set of assump...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/0010-7824(92)90043-s
更新日期:1992-02-01 00:00:00
abstract:OBJECTIVE:Previous survey research indicates that women and men experience reduced sexual pleasure when using condoms, especially compared to nonbarrier family planning methods. This study seeks to explore those experiences of reduced pleasure in-depth and how they affect contraceptive method decisions and use. STUDY ...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/j.contraception.2013.11.012
更新日期:2014-04-01 00:00:00
abstract:BACKGROUND:There has been some study of women's emotional and psychological well-being after an abortion but no research into women's expectations, at the time of seeking an abortion, of how they will cope after the abortion. STUDY DESIGN:We abstracted counseling needs assessment forms of 5109 women who sought an abor...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/j.contraception.2011.11.002
更新日期:2012-07-01 00:00:00
abstract::The contraceptive efficacy of breastfeeding was assessed in 236 healthy urban women who were followed at monthly intervals during the first postpartum year. Proportional hazard models were used to evaluate the influence of time postpartum, menstrual status and breastfeeding pattern upon the risk of pregnancy. Time and...
journal_title:Contraception
pub_type: 杂志文章
doi:10.1016/0010-7824(91)90072-n
更新日期:1991-04-01 00:00:00
abstract:OBJECTIVE:The objective of this investigation was to assess the potential effect of obesity on the effectiveness of hormonal contraceptives (HCs). STUDY DESIGN:A meta-analysis was conducted using individual participant data directly from the Phase 3 clinical trials of combination oral contraceptives (COCs) rather than...
journal_title:Contraception
pub_type: 杂志文章,meta分析
doi:10.1016/j.contraception.2015.07.016
更新日期:2015-11-01 00:00:00