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Biomedical subjects

M De Clercq

Publications and source records attributed to M De Clercq.

At least 19 recordsLinked to original sources
PubMed2001

Crisis intervention models in the French-speaking countries.

The article presents the crisis intervention model devised by Andreoli (Geneva) which is currently being developed in most crisis units and emergency services in the French-speaking countries of Europe. Two clinical examples are presented: the Short Therapy Centre (Geneva, Switzerland) and the crisis unit of the Saint-Luc Clinic (Brussels, Belgium). The following aspects of these approaches are discussed: (a) the need for crisis intervention rather than a simple answer to emergency, (b) the need for crisis intervention in all acute psychiatric disorders and not only in psychosocial problems, (c) the need to integrate psychiatric hospitalization into a coherent mental health policy, (d) the need for well-trained and round-the-clock teams, (e) the need for continuity of care.

Belgium↗
PubMed1996

Emergencies and somatization.

The article presents the clinical profile of 72 patients with somatization seen by a psychiatric team at the request of somaticians in a emergency service in St Luc hospital (Brussels-Belgium). These include 37.5% of mood disorders, 11% of psychotic disorders and 20% of serious anxiety disorders. The psychiatric antecedents of these patients are very poor. Only the combined intervention of the somatician and the psychiatrist can improve the compliance and the level of psychiatric care which is very low.

Adult↗
PubMed1994

[Functional somatic complaints in the emergency service and 4 year outcome].

The article presents the clinical profile of 72 somatizations taking in charge by a psychiatric team in a emergency room. They represent mood disorders (37.5%), psychotic disorders (11%) and anxiety disorders (20%). The psychiatric antecedents are very poor. Their outcome after 4 years is good on the health sickness rating scale of Luborsky in 35% and very bad in 25%, particularly for symptomatic score. After their taking in charge in the emergency room, these patients go not much in psychiatric hospitals and in psychiatric consultations. This observation gives to this first intervention in the emergency room a very important rule.

Adult↗
PubMed1993

[The role of the psychiatric nurse in an emergency service].

Since september 1989, 3 psychiatric nurses have been working with the crisis and psychiatric emergencies unit of the emergency service of Saint-Luc Hospital in Brussels (Belgium). In this paper, the authors examine the specific functions of psychiatric nurses in the taking in charge of psychiatric emergencies and functional somatic complaints, as well as their role in relation with the nursing team as a whole.

Emergency Services, Psychiatric↗
PubMed1991

[Crisis intervention, a response to the changing of psychiatric practice and the needs of the patient].

Traditional nosographic models are changing in psychiatry and becoming more polymorphic they can no longer be reduced to psychosis. The patient's demand has become paroxystic, more somatized. Pathological "acting" is frequent and calls upon the family and the life context of the patient, the latter demanding an immediate answer to his request for help. Crisis intervention appears as a new approach that allows both taking into account and benefiting from these changes in the clinic and the patient's demand. The example of a crisis team within the emergency service of a general hospital in Brussels is given in this paper.

Belgium↗
PubMed1990

[Knowledge about previous psychiatric care: is it a guaranty for therapeutic investment or a curse in psychiatric emergencies].

A sample of 755 psychiatric emergencies taken in charge in the emergency service of the St-Luc Hospital, Brussels, was divided into two groups: patients without psychiatric background (498) and patients having received previous psychiatric care (238). A background of psychiatric follow-up strongly influence the taking on and therapeutic decisions to be made by psychiatrists: its absence protects the patient and is seen as the guaranty of a good investment from the therapist while the existence of previous psychiatric treatment rather leads to hospital in lieu of crisis intervention, even when the crisis mechanisms are not significantly different in both samples.

Adolescent↗
PubMed1989

Interfacial analysis of fiber-reinforced bioactive glass dental root implants.

Bioactive glass can form an effective bond with bone. Essential for this connection are the interfacial reactions which lead to the development of a Si-rich film covered by a CaP-rich film. The presence of these layers can be demonstrated clearly by EDX analysis of fiber-reinforced bioactive glass and bulk bioactive glass implants installed for 4 and 16 months in the partial edentulous jaws of beagle dogs. EDX analysis reveals three types of microchemical interface. The first type develops when the implant is bonded to bone. Here, a smooth transition of the CaP profile can be observed between bioactive glass and the bone, thus providing for a compositional gradient between the implant and the surrounding tissues. The second type is seen when the implant surface is surrounded by fibrous tissue. This causes a discontinuity in the CaP profile. The third type is characterized by a gradual decrease in the Ca and P concentrations across the interface, caused by the presence of Ca and P in the fibrous tissue near the implant surface. This suggests that the interface is dynamic in time and transforms to a functionally better optimized interface. EDX analysis does not reveal any metal fiber ion contamination of the outer glass rim of the implant. When stainless-steel or wrought Co-Cr alloy is exposed to the surrounding fluids, the interfacial osteogenesis is disturbed, possibly by a synergistic effect of glass ions and metal ions. Exposure of titanium does not interfere with this osteogenesis. The bone bonding can also be influenced by surgical trauma. However, with precise implantation techniques, an enhancement of bone growth by osteoconductivity can be measured.

Animals↗
PubMed1988

Histological and histomorphometrical analysis of bioactive glass and fibre reinforced bioactive glass dental root implants.

Bioactive glass has the ability to bond with bone, but it cannot be used as a load bearing device due to its limited mechanical properties. By reinforcing bioactive glass with a ductile second phase, a structurally reliable material is obtained. The aim of the present study was to evaluate histologically and morphometrically the interfacial behaviour of submerged composite dental root implants. Therefore, bulk and composite implants were subgingivally installed in the partially edentulous jaws of Beagle dogs and harvested after 4 and 16 months. Histologically, the connection between the implants and bone tissue could be clearly demonstrated. This bone connection is mainly located at the cortical bone level. In the vicinity of the infraalveolar nerve a fibrous tissue contact was found. It is shown that surgical trauma, motion at the glass to tissue interface, and gross ion dissolution from the material adversely affect the interfacial osteogenesis. If these factors are controlled, bone bonding is found over a larger area than the initial area of contact between the implant and bone tissue. This means that bone grows out along the implant surface, starting from the initial contact area. No difference was observed between the interfacial behaviour of bulk bioactive glass and intact fibre reinforced bioactive glass implants.

Animals↗
PubMed1984

Visco-elastic properties of four currently used tissue conditioners.

About 60% of complete denture wearers experience a mostly painless inflammation of the palatal mucosal membrane. Especially prosthetic trauma and Candida albicans infection are assumed as aetiological factors. The treatment can be prosthetic or medicamentous, dependent on the cause. In this connection tissue conditioners could be very effective by their visco-elastic properties. Four tissue conditioners have been examined (Coe Comfort, FITT, Ivoseal, Visco Gel) for their impression softness and elastic recovery. All tests have been done on 20 mm specimens. The length of the specimens was measured during a 10 min compression and a 60 min relaxation. Eight ageing times have been taken into consideration. From the results large differences appear between the various tissue conditioners. Two main groups can be distinguished. FITT and Ivoseal are harder materials, whereas Coe Comfort and Visco Gel are softer. The ageing time has a clear hardening influence especially on Visco Gel. Visco Gel appears to be the best tissue conditioner by its relative plasticity during the first hours and its elastic behaviour during a longer ageing period. The clinical relevance of these materials is certainly not proved by this study. Further research will show this.

Acrylic Resins↗