[Internet and video games among students of Reunion Island in 2010: uses, misuses, perceptions and associated factors]. / Internet et jeux vidéo chez les étudiants de La Réunion en 2010 : usages, mésusages, perceptions et facteurs associés.

BACKGROUND: Describe the uses of Internet and video games and quantify associated problematic uses. METHODS: Information on student practices concerning the use of the Internet and video games was collected with a self-administered questionnaire. Problematic uses were identified with specific tools (Young criteria and Tejeiro criteria) and with self-evaluative questions. Information on life events with traumatic potential and use of psychoactive substances was also collected. Logistic regression models were applied to identify possible associated factors. RESULTS: Based on a sample of 1119 subjects, this study showed that students in Reunion Island are very concerned by the uses of the Internet and video games (98% and 46% of respondents). The prevalence of problematic use of the Internet accounted for 6% of respondents. Problematic uses of video games involved 8% of students (18% of gamers). Young people seemed unaware of their problematic practices and were seeking informations. The public respondent was also characterized by vulnerable situations (traumatic events induring their lives, consumption of psychoactive substances). Significant associations (with no identified causality) were examined, in particular between problematic uses of Internet and video games, and life events with traumatic potential. CONCLUSION: These first estimates of the prevalence of problematic use of Internet and video games on Reunion Island are important to promote locally collective awareness about these modern addictions. These results will be used to guide local actions of prevention and care, especially among younger generations. But it is necessary to conduct further work to better identify the factors associated with these problematic uses (determinants, comorbidities addictive…).

[Arrhythmogenic cardiomyopathies of the right ventricle]. / Myocardiopathies arythmogènes du ventricule droit.

Arrhythmogenic cardiomyopathies of the right ventricle (ACRV) are defined by an association of left delayed type ventricular arrhythmias, ranging from apparently uncomplicated extrasystoles to more severe or even potentially lethal arrhythmias such as polymorphous VT and ventricular fibrillation, with an anatomical substrate consisting of adipose or fibro-adipose degeneration of the myocytes of the free wall of the ventricle, which may be either focal (in particular: apex, anterior surface of the infundibulum and the sub-tricuspid region), or more diffuse. It is then accompanied by RV systolic dysfunction with dilatation of the cavity. This apparently well defined clinico-pathological entity is in fact more complex, if only because of the existence of associated lesions of the left ventricle in 1/3 of cases. The distinction from Uhl disease remains blurred, in particular in diffuse forms. It is most probable that more than one etiology is involved. A dysgenetic mechanism with probable autosomal dominant transmission has apparently been shown in familiar forms which are associated with a particularly severe risk of progression. The hypothesis of sequelae of multifocal myocarditis appears to be the most probable in sporadic forms. In the absence of histological criteria, which it is difficult to demand in view of the variability of results and potential dangers of endomyocardial biopsy involving such thin and fragile ventricular walls, the diagnosis of ACRV is based upon the concomitant existence of: (1) electrophysiological criteria: ventricular arrhythmias, in particular sustained monomorphous VT, with the particular feature of a very high degree of sensitivity to adrenergic stimulation (exercise), the existence of late potentials on the high amplification ECG, a highly specific sign, though unfortunately of poor sensitivity in localized froms, those which are most difficult to identify (2); segmentary morphological and kinetic RV abnormalities, most often resulting in localized akinetic or dyskinetic parietal vaulting, with stasis "in situ". Modern imaging methods (echocardiography, angioscintigraphy with phase analysis, nuclear magnetic resonance imaging, etc.) unfortunately do not yet offer an alternative to selective cineangiography of the RV which is the reference investigation when it is performed and interpreted under strict conditions. Several reports of sudden death or of ventricular fibrillation seen in confirmed cases of ACRV, as well as the publication of a number of autopsy registers indicating that this condition is one of the primary causes of sudden death in young individuals and in athletes, have cast doubt on the benign prognosis initially attributed to this condition.(ABSTRACT TRUNCATED AT 400 WORDS)