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Vagal overactivity: a risk factor of sudden infant death syndrome?
  1. T Shojaei-Brosseau1,
  2. C Bonaïti-Pellie1,
  3. S Lyonnet2,
  4. J Feingold2,
  5. V Lucet3
  1. 1Unité de Recherche en Epidémiologie des Cancers, INSERM U521, Villejuif, France
  2. 2Unité de recherche sur les Handicaps Génétiques de l’Enfant, INSERM, U393, Paris, France
  3. 3Centre de Cardiologie Infantile du Château des Côtes, Les Loges-en-Josas, France
  1. Correspondence to:
    Dr T Shojaei-Brosseau, Service de Biostatistiques, Institut Curie, 70 rue Mouffetard, 75005 Paris, France;

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Since early 1990, the incidence of sudden infant death syndrome (SIDS) has dropped sharply because of public health campaigns decrying the dangers of the prone sleep position. The other known risk factors, such as preterm birth and young maternal age, are less susceptible to prevention campaigns.1

Disordered autonomic function, including cardiorespiratory control, has been suggested to be involved in SIDS.2,3 Vagal overactivity (VO), characterised by breath holding spells and repeated syncopes in specific circumstances, has been described as …

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