Levothyroxine requirement in congenital hypothyroidism: a 12-year longitudinal study
Autor: | Maurizio Delvecchio, Maria Cristina Vigone, Rosa Maria Falcone, Pietro Pio Popolo, Andrea Corrias, Alessandro Mussa, Raffaella Di Mase, Mariacarolina Salerno, Malgorzata Wasniewska, Ida D'Acunzo, Giovanna Weber, Giulia Maria Tronconi, Luciano Cavallo, Filippo De Luca, Maria Felicia Faienza, Rosa Lapolla |
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Přispěvatelé: | Delvecchio, Maurizio, Salerno, Mariacarolina, Vigone, Maria Cristina, Wasniewska, Malgorzata, Popolo, Pietro Pio, Lapolla, Rosa, Mussa, Alessandro, Tronconi, Giulia Maria, D'Acunzo, Ida, DI MASE, Raffaella, Falcone, Rosa Maria, Corrias, Andrea, De Luca, Filippo, Weber, Giovanna, Cavallo, Luciano, Faienza, Maria Felicia, Vigone Maria, Cristina, Popolo Pietro, Pio, Tronconi Giulia, Maria, Di Mase, Raffaella, Falcone Rosa, Maria, Faienza Maria, Felicia |
Jazyk: | angličtina |
Rok vydání: | 2015 |
Předmět: |
Male
medicine.medical_specialty Longitudinal study Pediatrics Endocrinology Diabetes and Metabolism Early adolescence Levothyroxine Replacement therapy Thyroid dysgenesis Congenital hypothyroidism Congenital hypothyroidism etiology Congenital hypothyroidism severity Thyroxine requirement Endocrinology Congenital Hypothyroidism Female Humans Infant Infant Newborn Longitudinal Studies Thyroid Dysgenesis Thyroxine Internal medicine Diabetes mellitus medicine business.industry Thyroid Newborn medicine.disease Diabetes and Metabolism medicine.anatomical_structure Etiology business medicine.drug |
Popis: | The aim of the replacement therapy with levothyroxine in congenital hypothyroidism (CH) is to correct hypothyroidism and ensure normal growth and neuropsychological development. Few data are available about the appropriate dose during childhood and early adolescence; therefore, we performed a multicenter observational study in a large population of patients with CH to assess the required levothyroxine dose to obtain euthyroidism. We recruited 216 patients with permanent CH classified into three groups (agenesia, ectopia, and in situ gland) on the basis of the thyroid imaging. The levothyroxine dose was recorded at 6 and 12 months and then yearly until 12 years of age. The daily levothyroxine requirement progressively decreased during the follow-up, irrespective of etiology. It was significantly lower in patients with in situ gland than in patients with athyreosis during the entire study period and with ectopic gland from the age of 1 year. The levothyroxine requirement at 6 months of age was correlated with the requirement at each later time-point. The daily dose was modified less frequently in patients with in situ thyroid (36 %) than in patients with ectopic gland (41.4 %) or with athyreosis (43.6 %). Patients with in situ gland required a lower dose than the other two subgroups. The dose at 6 months seems predictive of the requirement until 12 years of age. Euthyroidism may be achieved in pre-school and in-school patients by 3-4 and 2-3 µg/kg/day (70-90 and 60-80 µg/m(2)/day) of levothyroxine, respectively. |
Databáze: | OpenAIRE |
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