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      [Prevalence of myasthenia gravis in Antioquia, Colombia].

      Revista de neurologia
      Adult, Age of Onset, Catchment Area (Health), Colombia, epidemiology, Female, Humans, Incidence, Male, Myasthenia Gravis, Prevalence

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          Abstract

          Myasthenia gravis (MG), considered the commonest of all the illnesses that affect neuromuscular transmission, is a disorder in which the autoimmune system attacks the post synaptic acetylcholine receptor proteins in the end plate terminal; it is characterised by weakness and skeletal muscle fatigue, with no anomalies in reflexes, sensitivity or coordination. Epidemiological indicators, such as incidence and prevalence, are not known in Colombia. AIMS. To determine the prevalence of MG among the inhabitants of Antioquia, through the use of the capture recapture method. The capture recapture method was used for two sources, the Instituto Neurológico de Antioquia and the Hospital Universitario San Vicente de Pa l, which are the most important institutions for the diagnosis of neurological diseases in Antioquia. MG prevalence was calculated using the following formula: p= n/N 105. We examined the data from the period between 1 July 1995 and 30 June 2000 with the aim of identifying subjects who fitted the profile of MG sufferers. General MG prevalence in Antioquia was 27.7 cases per million inhabitants (CI 95%= 23.2 32.2). The male/female ratio was 1:3.77. The estimated prevalence of MG is lower than that reported in United States and other temperate regions, where it varies between 60 and 150 cases per million. The prevalence of MG is low in Antioquia, as in other tropical areas

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