Publications by authors named "Ravnikar V"

We report a case of ovarian hyperstimulation syndrome associated with fetal trisomy 21. A primigravida presented at 17 1/7 weeks of gestation with abdominal pain because of enlarged ovaries. Multiple fetal abnormalities were seen on pregnancy ultrasound.

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Hysterectomies. Where are the indications?

Obstet Gynecol Clin North Am

June 1994

This article reviews the major reasons for hysterectomies and critiques some of the alternative practices, such as medical therapy to shrink fibroids, and new surgical techniques, such as laparoscopic-assisted hysterectomies. Perhaps in response to the increased attention and the new procedures and drugs that allow more conservative management, the rate of hysterectomies has actually decreased.

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This article reviewed conservative measures in dealing with issues of osteoporosis and cardiovascular disease prevention. The scientific evidence for each singular intervention is difficult to extract because there are so many confounding parameters. Moreover, improvement in nutrition and diet has its greatest impact on premenopausal women.

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We evaluated the influence of dietary, anthropomorphic, and hormonal factors on bone density in a cross-sectional sample of 281 pre- and perimenopausal women age 50-60 years living in Massachusetts. The sample included only women who had intact ovaries and were not currently using estrogen. Information on diet was obtained through a semiquantitative food frequency questionnaire.

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Background: Postmenopausal estrogen-replacement therapy may reduce the risk of cardiovascular disease, and this beneficial effect may be mediated in part by favorable changes in plasma lipid levels. However, the effects on plasma lipoprotein levels of postmenopausal estrogens in the low doses currently used have not been precisely quantified, and the mechanism of these effects is unknown.

Methods: We conducted two randomized, double-blind crossover studies in healthy postmenopausal women who had normal lipid values at base line.

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Because the long-term effects of estrogen replacement in adolescents with ovarian failure and hypothalamic amenorrhea have not been previously studied, we conducted a 2-year study of 35 patients to determine factors contributing to baseline bone density measures (bone density, bone mineral content, and bone width) and the response to estrogen therapy. Estrogen-deficient patients were often profoundly osteopenic by single-photon absorptiometry of the radius and dual-photon absorptiometry of the spine, despite estrogen replacement. Variables that were significant predictors of better initial single-photon absorptiometry measurements included increased age, increased body mass index, spontaneous pubertal development, lack of radiation therapy, and lower serum osteocalcin.

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Objective measures of vasomotor flushes have clarified their biologic basis and have established the peripheral reactions as compensatory mechanisms for hypothalamic thermoregulatory instability. Subsequently, investigations into the pathogenesis of flushes pointed to increasingly higher levels of control. The observed relationship between estrogen deprivation and vasomotor instability led to the hypothesis of a cause-effect relationship with LH and FSH.

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A retrospective study of radiologic findings from 50 postmenopausal women who underwent hormone replacement therapy was performed to determine the frequency and distribution of changes in the screen-film mammographic appearance of breast tissue between pretreatment and posttreatment mammography. Twelve (24%) of the women developed increased parenchymal density during a median follow-up of 18 months (range, 6-39 months). Mammographic changes included diffuse increase in density in seven (14%) of the women; increased multifocal, asymmetric densities in two (4%); and cyst formation in three (6%).

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A variety of nutritional factors influence the bioavailability of calcium and increase a woman's risk of osteoporosis. Eight healthy women completed an 8-week metabolic study designed to investigate the effect of nonalcoholic carbonated beverage consumption on calcium metabolism. Compared with women receiving a control diet, women consuming a diet high in nonalcoholic carbonated beverages demonstrated similar mean serum levels of calcium, ionized calcium, phosphorus, alkaline phosphatase, parathyroid hormone, 1,25-dihydroxyvitamin D3, and osteocalcin.

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The purpose of this study was to examine the effects of baseline ovarian cysts on the clinical response to controlled ovarian hyperstimulation (COH) in an in vitro fertilization (IVF) program. Patients were divided into two groups: group 1 (n = 21) had cysts with mean diameters between 10 and 45 mm on their baseline ultrasound before COH, and group 2 (n = 76) had no ovarian cysts on their baseline ultrasound. There was no statistically significant difference between the groups in maximum serum estradiol, the number of follicles greater than or equal to 10 mm on the day of human chorionic gonadotropin (hCG) injection, the number of follicles greater than or equal to 15 mm on the day of hCG injection, the number of oocytes retrieved, and the number of embryos transferred.

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An IVF patient who was placed on leuprolide therapy prior to ovulation induction to improve ovarian response developed moderate ovarian hyperstimulation from the sole use of the GnRH agonist. Clinicians should be aware of this possible outcome.

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The presence of other organ-specific autoimmune disorders in some patients with premature menopause has supported the concept of an autoimmune etiology. The authors analyzed the peripheral blood of 23 women with the diagnosis of premature menopause to detect the presence of monoclonal antibody-defined T-lymphocyte abnormalities and/or antiovarian antibodies. All subjects were less than 40 years of age with the duration of menopause ranging from less than 1 year to 11 years at the time of study.

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Ovulation induction was achieved in a woman with premature ovarian failure using a regimen of high-dose clomiphene citrate in combination with prednisone and oral micronized estradiol-17 beta.

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Seventeen healthy postmenopausal women who had subjectively noted eight or more hot flashes per day and who objectively demonstrated four or more vasomotor flushes of 1.0C or more during eight hours of continuous thermography were studied. They were randomly allocated in a double-blind fashion to either 50 micrograms/day of transdermal estradiol (E2) patch or placebo.

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To further investigate the relationship between insulin and androgen secretion in hyperandrogenic women, the authors measured the response of serum insulin and androgen concentrations to an 8 A.M. oral glucose tolerance test (OGTT) in ten hyperandrogenic (HA) women and seven midfollicular phase control subjects.

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The activity and electrophoretic pattern of galactose-1-phosphate uridyl transferase (transferase), a key enzyme in galactose metabolism, were analyzed in four patients with Müllerian aplasia (Rokitansky-Küster-Hauser syndrome) and their mothers. Mothers of two of the patients had genetic variations of their transferase enzymes with activities below the normal range. Affected daughters from these two mothers also had genetic variations of the transferase enzyme.

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Compliance with hormone therapy.

Am J Obstet Gynecol

May 1987

The analysis of compliance with hormonal replacement therapy in postmenopausal women must take into account the physician's knowledge of and willingness to prescribe such treatment and the patient's acceptance of the risks and benefits. Studies have shown that most women receiving oral therapy take their medication only sporadically, and those who discontinue treatment usually do so because of the fear of endometrial cancer. Both physicians and patients should be made aware that the addition of progestogen can greatly lessen this risk.

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Morning serum steroid levels were determined in postmenopausal chronic smokers and nonsmokers. Postmenopausal smokers (n = 9) had significantly elevated levels of cortisol, progesterone (P), 17-hydroxyprogesterone (17-OHP), androstenedione, and testosterone compared with nonsmokers (n = 16). The increases were most significant for cortisol (P less than 0.

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To evaluate our results with induction of ovulation with human menopausal gonadotropins, we reviewed our experience from 1979 to 1981. Twenty-two women and 89 treatment cycles were evaluated. The patients were assigned to group 1 (amenorrhea, low FSH and LH, and no evidence of endogenous estrogens, as indicated by lack of withdrawal bleeding after medroxyprogesterone acetate) or group 2 (amenorrhea, with normal gonadotropins and evidence of endogenous estrogens by progestin withdrawal bleeding).

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This is a preliminary study of a new orally administered alpha-adrenergic agonist, lofexidine, to establish its effectiveness in the control of vasomotor flushes (VMF) in five post-menopausal women. The initial dose of lofexidine, 0.1 mg b.

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