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Biomedical subjects

J Buvat

Publications and source records attributed to J Buvat.

At least 19 recordsLinked to original sources
PubMed1992

[Outcome of pregnancies obtained by fertilization in vitro. Experience at the V. Olivier Ward (department of Professor Monnier, Lille University Hospital Center) and review of the literature].

The outcome of 87 pregnancies obtained by fertilisation in vitro and progressing beyond 20 weeks of amenorrhea monitored in the Victor-Olivier Ward (Prof. Monnier, Lille Teaching Hospital Group) was analysed. Results were compared with those in the literature. The group was characterised by three features: age, the number of primipara and above all the multiple pregnancy rate. One quarter of FIV pregnancies are multiple pregnancies and almost two newborn out of live are the result of multiple pregnancies. Almost 70 per cent of clinical pregnancies progressed beyond six months. Pregnancy pathology was represented by a marked worsening of the prematurity rate and by a slightly increased risk of fetal under-development. The cesarean section rate was very markedly increased. Sex ratio, and perinatal mortality, malformation and chromosomal aberration rates were similar to those for spontaneous pregnancies. Results are reassuring overall, the pathology being encountered in pregnancies of this type being only partially explained by age, the number of primipara and the multiple pregnancy rate. This pathology could possibly be explained by the underlying situation in which sterility occurred.

Abortion, Spontaneous↗
PubMed1991

[Ovulation disturbances in athletes and their mechanisms].

Delayed menarche, amenorrhea or at least luteal insufficiency are frequent in athletic women, when in intense athletic training. The origin of these disturbances seems to be plurifactorial. The main responsible parameters seem to be: the physical and psychological stresses; nutritional factors often associated with reduced food intake (specially reduced protein and increased vegetable fibers intake), and in some cases with loss of body fat; and affective problems responsible for eating disorders. The paper describes the acute effects of training upon hormones, and the hormonal profile of athletes when in intense training. The reduced or suppressed LH pulsatile secretion determines the ovulatory disturbances. Among the responsible factors, the rise of opioids, as beta-endorphin, and the corticotropin hyperactivity, which probably play an important role, even if other mechanisms will be demonstrated later.

Catecholamines↗
PubMed1991

[First consultation of impotent patient].

This paper defines the main goals of the first consultation of an impotent patient, and describes the practical procedure. First of all, the first consultation must include a thorough history-taking which will make it possible in many cases to have a fairly objective idea of the degree of organic involvement. The most important questions are about the possible occurrence of regular rigid erections in situations that are neither coital nor sexual. Their occurrence rules out any organic involvement almost with certainty, and allows abstaining from additional examinations, or keeping them within minimum limits. Their absence is compatible with an organic involvement, but is not specific for this, and leads to further exploration. The first consultation is also the occasion of a first human contact, and its quality will often influence the prognosis. Besides being sufficient to cure some patients, this first contact is a major condition for the compliance with the therapeutic advice that will be given later on.

Ejaculation↗
PubMed1978

Changes in pituitary gonadotropins during the amenorrhoea-galactorrhoea syndrome due to sulpiride.

Sulpiride, a dopamine receptor blocker which raises prolactin, was given to six women with idiopathic amenorrhoea for 10 days and to eleven women with regular cycles for 3 to 6 months. The latter group developed galactorrhoea and amenorrhoea during treatment. Basal LH AND FSH concentrations showed no significant changes. At 3 months but not at 10 days (amenorrhoea group) or 6 months (regular menses group) the area-under-the-curve of LH response to LHRH was increased. FSH responses to LHRH was not altered. The significance of these results to the hyperprolactinaemia-amenorrhoea syndromes are discussed.

Amenorrhea↗
PubMed1978

[Dysperception of body image and dysmorphophobias in mental anorexia. Apropos of 115 cases involving both sexes. I. Altered mechanisms of perception in mental anorexia].

We noted frequency of body-image disturbance (BID) and dismorphophobias (DPP) in 97 girls and 8 boys among 107 girls and 8 boys with Anorexia Nervosa (AN), seen since 1973 and coming up semiologic criterions of Laboucarie and Dally & Sargant. 91,5% of the girls and 7 out of 8 boys presented a BID at one time of their evolution. The other ones did not form a characteristic group. BID prevailed in no-perception of emaciation. No-perception of overweight was exceptional. That of variations of weight was frequent, explaining to need objective elements to measure real volume. BID seems to result from an incapacity to integrate well individually perceived details into a coherent image. Its apparition signals starting of AN, and it is a fundamental criterion of evolutivity. It's not frequent it's extended to body-image disperception of the close people, but it is often associated to an increase of mental representation of ingested feed volume.

Adolescent↗
PubMed1978

[Dysperception of body image and dysmorphophobias in mental anorexia. Apropos of 115 cases involving both sexes. II. Dysmorphophobias in mental anorexia].

Study of DPP extended over 2 groups selected as following: It was prospective in every patient seen between July 1976 and May 1977 (systematic study: SS: 35 girls and 2 boys). It was retrospective in another group before selected for importance of DPP (no systematic study: NSS: 34 girls and 6 boys). DPP were distributed into Dalpha (fear of any weight recovery), Dbeta (obsessing repercussion of a real defect, amplified in its perception) and Dgamma (delirious and obsessing conviction of a physical anomaly). We researched correlations with the type of AN (fixity or recession to childhood), premorbid weight-height ratio, overweight of the same-sex parent, important problems towards sexuality (ASC = Absolute sexual conflict = An entirely caused by a sexual difficulty, or PSC = Partial Sexual Conflict = difficulty towards sexuality when insuffisant to explain AN, or no sexual conflict), attitude towards pregnancy in cases of big-belly DPP. Every DPP were DPP of localized or generalized obesity. Dalpha is constant and pathognomonic. In females of SS, 37% presented Dbeta and 5% Dgamma before AN, 25% Dbeta and 11% Dgamma during AN. Among the 8 boys of the 2 studies, 3 presented Dgamma before AN, and everyone expressed their obsessing fear of "ugly grease". In 20% girls and 50% boys, explained aim of loss of weight was to "wipe out" the anomally DPP emphasized. We did not find any correlation between generalized DPP and studied elements, particularly with sexual conflicts (22% of our cases). The more frequent localized DPP was "big-belly"-DPP, always associated with overweight of the same sex parent, but as for other localized DPP, without any correlation with sexual conflicts, problems towards the father, neither reject of pregnancy.

Adolescent↗
PubMed1978

[Dysperception of body image and dysmorphophobias in mental anorexia. Apropos of 115 cases involving both sexes. III. Physiopathogenic deductions and introduction of a novel definition of the disease].

Ignoring of emaciation (IE), fear of any weight recovery (Dalpha), and dismorphophobias (DPP) represent the central problem of AN, with different incidence. Fundamental need of being lean expresses, at lesss in girls, distress of personality insufficiently prepared to autonomous adult life, with its responsabilities. Obesity-DPP may correspond to projection upon the body of the obsessing conviction of being inferior, with regard to social and publicitary patterns, and get an active play in starting and management of weight loss. So AN is either an attempt to accomodate this critic situation, trying to incarnate actual female archetype, either, in the more severe cases, a renouncing with an obstinate physical and psychological recession to the state of a protected child. It seems to correspond to an attempt of negation of morbid character of this situation, so that it may be perpetuated and so that feeling of culpability can be decreased in front of familial recrimination. Constancy of these symptoms, and their relation with deep meaning of this illness, justify their introduction into a new definition of AN, diagnosed by association of at less 2 out of 3 major criterious (loss of weight superior to 10% premorbid weight, feed restrictions and Dalpha) and one out of 2 minor criterions (amenorrhea and IE).

Adolescent↗
PubMed1977

[Acute pituitary failure as the presentation of a prolactin cell adenoma during a pregnancy made possible by bromocriptine (author's transl)].

A 21-year-old woman had sterility due to amenorrhoea-galactorrhoea with hyperprolactinaemia and hypoplastic ovaries. The sella turcica was asymmetrical but tomograms were suggestive of a congenital appearance. There was no suprasellar expansion. Treatment with bromocriptine and HMG resulted in pregnancy. Acute pituitary failure occurred at the 10th week, revealing an adenoma. The pregnancy proceeded to term after hypophysectomy. This complication, the first reported under the effects of bromocriptine, may serve as a reminder of the precautions to be taken during pregnancy in a hyperprolactinaemic woman.

Adenoma↗