Effets secondaires mÚtaboliques de la rispÚridone dans les schizophrÚnies Ó dÚbut prÚcoce.
2010
BACKGROUND: Atypical antipsychotics have a favourable risk/benefit profile in early onset schizophrenia (EOS). However, despite increasing use of psychotropic medication in children and adolescents, their endocrine and metabolic side-effects (weight gain, obesity, and related metabolic abnormalities such as hyperglycaemia and dyslipidemia) are of particular concern, especially within this paediatric population that appears to be at greater risk as compared with adults for antipsychotic-induced metabolic adverse effects. In addition to medication, many factors contribute to weigh gain in psychiatric patients, including sedentary lifestyle and poor diet. Excessive weigh gain has several deleterious effects in psychiatric patients, including stigmatization and further social withdrawal, and non compliance with medication. Furthermore, excessive corpulence may evolve to a metabolic syndrome with a high-risk state for future cardiovascular morbidity and mortality in adult age. Because youths are still developing at the time of psychotropic drug exposure, in a context of physiological changes in hormonal and endocrines levels and body composition, most reference values need to be adjusted for gender, age and growth charts. Hence, sex- and age-adjusted BMI percentiles and BMI Z scores are crucial to assess weight gain in children and adolescents. LITERATURE FINDINGS: Obesity thresholds have been proposed to define "at risk" categories of patients. In recently issued guidelines, thresholds for antipsychotic-induced weight gain in adults have been set at a 5% increase or one point increase in BMI unit. To date, no definition has reached a consensus in childhood and adolescence. However, some at risk states requiring action are proposed in literature: more than 5% increase in weight within a three-month period; more than half a point increase in BMI Z score; between 85th and 95th BMI percentile plus one adverse health consequence (i.e. hyperglycaemia, dyslipidemia, hyperinsulinemia, hypertension, or orthopaedic, gallbladder, or sleep disorder); or more than 95th BMI percentile or abdominal obesity (i.e. abdominal circumference above 90th percentile). As a matter of fact, numerous studies that have assessed weight gain during antipsychotic treatment are clearly limited, either because of their short duration (a few weeks), or because of their methodology: indeed, only weight gain is generally reported as an assessment tool. Merely noting an increase in body weig (AU)
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