title: Familial vasovagal syncope.
abstract: Vasovagal syncope (VVS) is a common clinical problem characterized by transient episodes of loss of consciousness due to abnormal autonomic activity. This paper describes two groups of monozygotic twins, from different families, affected by VVS and a family with several members with this condition. Their clinical characteristics, haemodynamic response to tilt, treatment, and outcome are described.
authors.affiliation: Electrocardiology Department, Instituto Nacional de Cardiología Ignacio Chávez, México.
authors.forename: Manlio F
authors.initials: MF
authors.lastname: Márquez
authors.forename: Karla I
authors.initials: KI
authors.lastname: Urias
authors.forename: Antonio G
authors.initials: AG
authors.lastname: Hermosillo
authors.forename: José L
authors.initials: JL
authors.lastname: Jardón
authors.forename: Pedro
authors.initials: P
authors.lastname: Iturralde
authors.forename: Luis
authors.initials: L
authors.lastname: Colín
authors.forename: Santiago
authors.initials: S
authors.lastname: Nava
authors.forename: Manuel
authors.initials: M
authors.lastname: Cárdenas
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010375:Pedigree; D019462:Syncope, Vasovagal / Q000175:diagnosis / Q000235:genetics*; D018667:Tilt-Table Test; D014430:Twins, Monozygotic