Gregory Mantzouranis
University of Lausanne
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Featured researches published by Gregory Mantzouranis.
Psychiatry Research-neuroimaging | 2014
Sébastien Urben; Vanessa Baier; Gregory Mantzouranis; Jeannette Schwery; Chantal Mahi; Swen Courosse; Boris Guignet; Olivier Halfon; Laurent Holzer
The current study aimed to explore the validity of an adaptation into French of the self-rated form of the Health of the Nation Outcome Scales for Children and Adolescents (F-HoNOSCA-SR) and to test its usefulness in a clinical routine use. One hundred and twenty nine patients, admitted into two inpatient units, were asked to participate in the study. One hundred and seven patients filled out the F-HoNOSCA-SR (for a subsample (N=17): at two occasions, one week apart) and the strengths and difficulties questionnaire (SDQ). In addition, the clinician rated the clinician-rated form of the HoNOSCA (HoNOSCA-CR, N=82). The reliability (assessed with split-half coefficient, item response theory (IRT) models and intraclass correlations (ICC) between the two occasions) revealed that the F-HoNSOCA-SR provides reliable measures. The concurrent validity assessed by correlating the F-HoNOSCA-SR and the SDQ revealed a good convergent validity of the instrument. The relationship analyses between the F-HoNOSCA-SR and the HoNOSCA-CR revealed weak but significant correlations. The comparison between the F-HoNOSCA-SR and the HoNOSCA-CR with paired sample t-tests revealed a higher score for the self-rated version. The F-HoNSOCA-SR was reported to provide reliable measures. In addition, it allows us to measure complementary information when used together with the HoNOSCA-CR.
Child Psychiatry & Human Development | 2015
Sébastien Urben; Vanessa Baier; Gregory Mantzouranis; Eva Pigois; Caroline Graap; Fabienne Dutoit; Mélanie Cherix-Parchet; Coralie Henz; Aymeric Faucherand; Esperanza Senent; Laurent Holzer
Previous studies have shown that stressful life events (SLEs), gender, social functioning and pretreatment severity are some of the predictors and/or moderators of treatment outcome in psychiatric care. The current study explored the effect of these predictors and moderators on the treatment outcome related to assertive community treatment (ACT) proposed to young people with severe mental disorders. 98 patients were assessed for externalizing and emotional difficulties, at admission and then at discharge of an ACT. Analyses revealed significant improvements in terms of symptomatology. In particular, regression analyses showed that pretreatment severity is a significant predictor of the outcome on emotional symptoms and is moderated by SLE on the outcome on externalizing symptoms. Furthermore, higher social functioning proved to predict better outcome on externalizing symptoms. Our results further evidence that these factors can explain inter-individual differences in outcome related to ACT. The theoretical and clinical implications of these results are discussed.
Archives of Psychiatric Nursing | 2016
Sébastien Urben; Gregory Mantzouranis; Vanessa Baier; Olivier Halfon; Eva Villard; Laurent Holzer
Assertive community treatment (ACT) reduces symptoms and enhances social integration for adolescents with severe psychiatric disorders (Baier, Favrod, Ferrari, Koch, & Holzer, 2013; Rowland et al., 2005; Schley et al., 2008). In our practice, the duration of ACT rarely exceeds 12 months. However, the question of the necessary timing to draw therapeutic benefits is largely unanswered. Therefore, the purpose of this pilot study is to provide foundational guidance about the necessary duration of ACT to achieve therapeutic benefit.
Social Psychiatry and Psychiatric Epidemiology | 2018
Gregory Mantzouranis; Vanessa Baier; Laurent Holzer; Sébastien Urben; Eva Villard
PurposeThe efficacy of assertive community treatment for children and adolescents is proven in the United States, but remains controversial in Europe. Moreover, most studies showing positive outcomes of assertive community treatment are limited to statistically significant differences and do not consider whether the treatment is also subjectively clinically meaningful for the patient. Using a naturalistic sample, the present study aims to assess statistical and clinical significance of an assertive community treatment unit for adolescents in Europe.MethodsLinear mixed-effects models and reliable change indices were used to respectively assess the statistical and clinical significance of assertive community treatment in 179 adolescents (mean age = 15.76, SD = 1.76) with severe mental illnesses.ResultsDifficulties related to mental health (measured by the Health of the Nation Outcome Scales for Children and Adolescents, HoNOSCA) and overall functioning (measured by the Global Assessment of Functioning scale) statistically improved (all ps < 0.001) from admission to discharge. Additionally, a considerable proportion of patients (from 14% to 21%) clinically recovered to functional levels.ConclusionOur results support the fact that assertive community treatment can have convincing and positive clinical outcomes in European settings.
Psychiatry Research-neuroimaging | 2016
Sébastien Urben; Gregory Mantzouranis; Vanessa Baier; Olivier Halfon; Eva Villard; Laurent Holzer
Understanding the trajectories of youths within Child and Adolescents Mental Health Service (CAMHS) is of primary importance. Our objective is to assess the usefulness of the Health of the Nation Outcome Scales for Children and Adolescents (HoNOSCA) to predict inpatient (IP) stay for youths followed by assertive community treatment (ACT) teams. 82 youths followed exclusively by ACT and 42 who needed IP were assessed with the HoNOSCA at admission to the program. The HoNOSCA allowed the computing of three scores: a total score, an externalizing symptoms (Ext) score and an emotional problems (Emo) score. Logistic regressions revealed that the three HoNOSCA scores at admission of ACT predicted later need for hospitalization. Using ROC curve analyses, we set up cut off scores with appropriate sensitivity and specificity for the HoNOSCA Total and Ext to optimally predict the need for hospitalization. This study revealed that the HoNOSCA may be a useful tool to predict the need for later IP during ACT. Such knowledge is important to set up the best therapeutic strategies.
The International Journal of Psychoanalysis | 2012
Xanthoula Dalakaki; Gregory Mantzouranis
In this paper the authors reflect on the phenomena produced by the surprising communication between the unconscious of a therapist and that of a comatose patient. In a particularly disturbing context, when the patient’s sternum is open and exposed, the therapist communicates empathically with the comatose person, identifying the patient’s inexpressible experience and generating signs of a response from him in the form of the blinking of his eyelids. The absence of any reaction to pain, a pathognomonic sign of the comatose condition, could be related to the splitting‐off of the trauma, as if the situation were frozen, through a denial of the sensory and neurological perception of pain – a kind of self‐anaesthesia as a defence against the catastrophic anxieties raised by the threat of the return of the primary trauma. Starting from this encounter a relationship is formed whose guiding thread emerges in the shared illusion of a regression that makes it possible. It involves a process of returning to the past and a re‐actualization of the past that includes the question of its change through representation.
Journal of Adolescence | 2012
Grégoire Zimmermann; Elodie Biermann Mahaim; Gregory Mantzouranis; Philippe A. Genoud; Elisabetta Crocetti
Journal of Child and Family Studies | 2012
Gregory Mantzouranis; Grégoire Zimmermann; Elodie Biermann Mahaim; Nicolas Favez
PsycTESTS Dataset | 2018
Sébastien Urben; Vanessa Baier; Gregory Mantzouranis; Jeannette Schwery; Chantal Mahi; Swen Courosse; Boris Guignet; Olivier Halfon; Laurent Holzer
Journal de Thérapie Comportementale et Cognitive | 2017
Frédéric Lambelet; Sébastien Urben; Stéphane Gener; Gregory Mantzouranis; Laure Jaugey; Afrodite Kapsaridi; Caroline Lepage; Laurent Holzer