[Severe delayed apnea in neonates and Prader-Willi syndrome: 2 case studies]. / Apnées sévères différées en période néonatale et syndrome de Prader-Willi: à propos de 2 cas.

We report 2 cases of severe apnea in newborns presenting with Prader-Willi syndrome. They required transient mechanical ventilation and finally returned to spontaneous breathing. Clinical progression was then usual for the syndrome. Respiratory failure appearing after a few days of life could be a new neonatal clinical feature for the diagnosis of Prader-Willi syndrome. It is not related to poor outcome.