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Biomedical subjects

H W Halbe

Publications and source records attributed to H W Halbe.

At least 19 recordsLinked to original sources
PubMed2002

Uterine artery embolization for the treatment of uterine leiomyomata.

OBJECTIVES: To evaluate the results of the uterine artery embolization (UAE) for the treatment of uterine fibroids. METHODS: Twenty-six patients with ultrasonographic diagnosis of uterine leiomyomata were submitted to UAE with polyvinyl alcohol particles. Imaging and clinical follow-up was performed before the procedure, at 3 months, and 1 year after. RESULTS: All procedures but one were technically successful. Control of menorrhagia and pelvic pain were reported after UAE by 87.5% and 84.2% of patients, respectively. The initial medium uterine volume was 385 cm(3), after 3 months 255 cm(3) and after 1 year 202 cm(3). The mean uterine volume decrease was 29% after 3 months and 41% after 1 year of follow-up (P<0.001). Clinical and biochemical findings consistent with ovarian failure were observed in three patients (12% of the patients). CONCLUSIONS: UAE represents a new therapeutic approach in the treatment of uterine leiomyomata. The procedure appears effective in controlling symptoms and represents an alternative to hysterectomy.

Adult↗
PubMed1998

Efficacy and acceptability of two monophasic oral contraceptives containing ethinylestradiol and either desogestrel or gestodene.

OBJECTIVE: To assess the contraceptive efficacy, cycle control and acceptability of two monophasic oral contraceptives containing either 30 micrograms ethinylestradiol plus 150 micrograms desogestrel or 30 micrograms ethinylestradiol plus 75 micrograms gestodene. METHODS: In a randomized, open-label, six-cycle, group-comparative, multicenter study performed in Brazil, pregnancies, cycle-control parameters, incidence of side-effects and the presence and severity of acne vulgaris were assessed, and blood pressure and body weight were measured at pretreatment and after one, three and six cycles of oral contraceptive use. RESULTS: Of the 595 women enrolled, 274 (86.7%) in the desogestrel/ethinylestradiol group and 227 (81.4%) in the gestodene/ethinylestradiol group completed the six cycles, providing data for 1753 and 1487 treatment cycles, respectively. Two pregnancies occurred, one of which (in the desogestrel/ethinylestradiol group) was attributed to user failure, whilst the other (in the gestodene/ethinylestradiol group) was thought to result from method failure. Cycle control was observed to be excellent; the incidences of irregular bleeding and minor side-effects were low in both groups and decreased after an initial increase in the first cycle. Pre-existing acne improved in both groups, whereas blood pressure and body weight remained essentially unchanged. CONCLUSIONS: Both desogestrel/ethinylestradiol and gestodene/ethinylestradiol provide effective oral contraception with comparable cycle control and acceptability.

Acne Vulgaris↗
PubMed1997

A virilizing Leydig cell tumor of the ovary associated with stromal hyperplasia under gonadotropin control.

A 34-yr-old nulliparous black woman presented with hair loss, facial hirsutism, irregular menses and infertility associated with greatly increased serum total testosterone levels. The adrenal glands and the ovaries were normal on radiological and ultrasonographic investigation. Catheterization of the veins draining from the adrenal glands and the ovaries yielded testosterone levels of 20.3 nmol/L and 20.0 nmol/L in the right and the left adrenal veins, respectively, and 17.9 nmol/L and 27.4 nmol/L in the right and left ovaries venous plexus, respectively. Sequencial dexamethasone and ethynyl estradiol suppression test showed a decrease in cortisol level with no change in total testosterone level on dexamethasone while an increase in testosterone from 10.5 nmol/L to 20.1 nmol/L was observed ten days after ethynil estradiol had been associated to dexamethasone. When a gonadotropin-releasing hormone agonist (gonadorelin 3.5 mg i.m.) was administered for 2 months, serum gonadotropins levels decreased to less than 2 IU/L, total testosterone to 3.8 nmol/L and estradiol to less than 36 pmol/L. The patient was submitted to a pelvic exploratory laparotomy and a left salpingo-oophorectomy was performed. A solid and circumscribed ovarian tumor of 1.0 cm in diameter was found. The pathological diagnosis was a Leydig cell tumor with surrounding stromal hyperplasia. These findings may suggest that this tumor was gonadotropin-dependent being indirectly stimulated by ethynil estradiol, through a sensitization of the pituitary gonadotropes and increase in gonadotropin levels and suppressed by a gonadotropin-releasing hormone agonist.

Adult↗
PubMed1995

Updating the clinical experience in endometriosis--the Brazilian perspective.

In an open-label, multicentre, randomized, parallel group study, 164 women with endometriosis were assigned to treatment. Out of these women, 81 received danazol (600 mg daily for 8 weeks, then 400 mg for 16 weeks) and 83 were given gestrinone (2.5 mg twice a week for 24 weeks). Five weeks before the start of treatment clinical evaluation and diagnostic laparoscopy were performed during the screening visit. Drug assignment and laboratory data assessment were carried out within 3 days of the estimated onset of the menstrual cycle at baseline visit. The response to treatment was assessed during visits at weeks 2, 4, 8, 12, 16, 20 and 24; at the last visit a second laparoscopy was performed. Therapeutic efficacy was evaluated by analysis of the laparoscopic scores assessed according to the revised American Fertility Society classification. Symptomatic response was measured by clinical scores and laboratory data. In one centre, bone mineral density was also recorded. One patient in the danazol group discontinued treatment due to a cutaneous rash as a probable adverse reaction at the beginning of the study. The therapeutic efficacy of danazol and gestrinone did not differ significantly when the revised American Fertility Society scores were compared. The symptomatic response also showed no statistical difference when clinical examination scores were analysed. There was no significant difference between the drugs in laboratory data, including bone mineral density, with respect to adverse events. Analysis of clinical scores showed that danazol was superior to gestrinone with respect to acne and irregular bleeding. Based on these data, we conclude that both danazol and gestrinone are reliable in the treatment of endometriosis and offer similar results.

Adult↗
PubMed1987

The significance of female sex steroids on the vascular permeability of the traumatised uterine serosa of rats.

Using experiments with conjugated hormones, and their influence on vascular permeability assessed by the colloidal carbon technique, we have investigated the effect of female sex steroids on the microcirculation of the uterine horn of virgin rats. We found that oestrogen inhibited vascular permeability in inflammatory conditions. Progesterone increased vascular permeability.

Animals↗