[Neurocardiogenic syncope and hereditarity].
OBJECTIVE
To investigate a possible familial predisposition in neurocardiogenic syncope.


METHODS
Cross-sectional survey with 252 subjects, with positive familial history for syncope, who underwent head-up tilt-test (TT) at Instituto de Cardiologia do Rio Grande do Sul, between September 2001 and September 2005. The relationship between familial history for neurocardiogenic syncope and TT result was analysed.


RESULTS
Familial history for neurocardiogenic syncope was identified in 40% (49/126 cases) of subjects with positive tilt-test results and 25% (31/126 ) of those with negative TT.


CONCLUSIONS
There is a correlation between familial history for neurocardiogenic syncope and its occurence. A genetic component can possibly explain this relationship.
Instituto de Cardiologia do Rio Grande do Sul - Fundação Universitária de Cardiologia, Porto Alegre, RS, Brazil. editoracao-pc@cardiologia.org.br
Mariana Cristina S
MC
Azevedo
Juarez N
JN
Barbisan
Erlon Oliveira Abreu
EO
Silva
D000293:Adolescent; D000328:Adult; D016009:Chi-Square Distribution; D003430:Cross-Sectional Studies; D005260:Female; D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D010375:Pedigree; D019462:Syncope, Vasovagal / Q000175:diagnosis / Q000235:genetics*; D055815:Young Adult