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M Bellavia

Publications and source records attributed to M Bellavia.

5 recordsLinked to original sources
PubMed2006

[When should we treat infertility and how should we determine the degree of urgency?].

The successes of assisted reproductive treatments (ART) have been amply documented. Yet, there is no clear consensus as to who are the couples who need ART and with which degree of urgency, short of course of those suffering from definitive tubal infertility or severe male factor. Determining the degree of medical urgency for deploying ART approaches is of true clinical concern. In case of occult forms of ovarian failure (not symptomatic short of infertility itself), delaying treatment may lead to definitive failure. Conversely, if infertility results from ovulatory disorders brought by stress, postponing ART for a few months may bring spontaneous pregnancies. The recent introduction of anti-mullerian hormone (AMH) testing is of significant help for assessing the degree of ovarian reserve.

Female↗
PubMed2006

[Synchronisation of the menstrual cycle and ovarian follicles: interest and benefit].

In the menstrual cycle, a slight elevation of plasma FSH levels, the inter-cycle FSH signal, initiates the 1st phase of follicular recruitment. In ovarian stimulation for IVF, exogenous FSH aims at increasing the amplitude of this signal while maintaining FSH levels elevated, in order to fool the natural mechanisms of single follicular dominance. Synchronization consists in maintaining plasma FSH levels low so that all recruitable follicles remain at a resting state, prior to inducing ovarian stimulation. Practically speaking, synchronization of ovarian follicles allows to optimize clinical efforts, reduces the risk of cyst formation and ultimately, helps improving IVF outcome.

Female↗
PubMed2005

A dominant ovarian follicle induces unilateral changes in the origin of the blood supply to the tubal corner of the uterus.

BACKGROUND: The blood supply to the tubal corner of the uterus may originate from the uterine and ovarian arteries. The border of supply from the arteries has been found to move in young women; the change seemed dependent on ovarian steroid production. The present work investigated whether the border of supply could differ between the two sides of the uterus in the same woman having one dominant follicle (>10 mm). METHODS: Vagina was flushed with saline of room temperature in 15 women with a dominant follicle >10 mm. The temperature was measured in the mid-uterine lumen and in the tubal corner of the uterus at 2, 5 and 7 min after starting cooling. The investigation was repeated 30 min later measuring the temperature in the other tubal corner. RESULTS: The temperature decrease was, as found in previous investigations, more pronounced in the uterine cavity than in the tubal corners. However, a difference was found between the two tubal corners. At all measurement times the decrease was significantly smaller in the tubal corner corresponding to the dominant follicle than in the contralateral side. CONCLUSIONS: In our model, 'cold' is transferred from the vaginal venous blood to the uterine artery and the cooling defines the supply area of the uterine artery. Therefore, the results indicate that the area of supply from the ovarian artery in the tubal corner ipsilateral to the dominant follicle is greater than that in the contralateral side. It is possible to speculate that this difference is related to the hormonal production of the dominant follicle.

Adult↗
PubMed2002

Reproductive outcome after laparoscopic treatment of endometriosis.

PURPOSE OF INVESTIGATION: To evaluate the pregnancy rate after laparoscopic treatment of endometriosis. PATIENTS AND METHODS: 47 infertile women undergoing laparoscopic treatment of endometriosis. RESULTS: rAFS stage was as follows: 11% of patients had Stage I, 11% Stage II, 53.3% Stage III and 24.4% Stage IV. The mean duration of follow-up was 48.5 +/- 18.44 months. The overall pregnancy rate was 64.4%. Eighteen out of 26 women (69%) became pregnant within six months after laparoscopy, 23% at 12 months, 11% within 24 months, and 11% after two years (p < 0.01). Adnexal adhesions and tubal status significantly affected the pregnancy rate. No differences were found regarding the stage of disease and the presence of ovarian endometriomas. CONCLUSION: Laparoscopic treatment of endometriosis enhances fertility and the pregnancy rate is highest within the first six months after surgery. Adnexal adhesions and tubal conditions influence the reproductive outcome.

Adult↗