• G Emeriaud, S Douchin, P S Jouk, P Andrini, I Wroblewski, C Marey, and A M Rossignol.
• Service de réanimation néonatale et infantile, CHU de Grenoble, BP 217, 38043 Grenoble, France. guilemeriaud@hotmail.com
• Arch Pediatr. 2002 Aug 1;9(8):805-9.

UnlabelledThe perinatal manifestations of the long QT syndrome are rare, but early diagnosis and therapy are necessary to prevent sudden death.Case ReportsA long QT syndrome was diagnosed in two neonates who presented with foetal bradycardia. In one case, a mutation in the gene KCNQ1 was identified, and a long QT syndrome was diagnosed in the mother and two brothers of the neonate. On beta-blocker therapy, one infant became free of long QT syndrome related symptoms, but a sudden death of the second infant occurred.ConclusionThe long QT syndrome should be considered in the differential diagnosis of foetal bradycardia. Early treatment of the neonate and his family may prevent ventricular arrhythmias and sudden death.

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