Comportamiento diferencial de la tensión arterial de pacientes con síncope neuro-cardiogénico en la fase inicial de la prueba de inclinación / Differential behaviour of blood pressure in patients with neurocardiogenic syncope during the initial stage of the tilt table test
Arch. cardiol. Méx
;
76(1): 59-62, ene.-mar. 2006.
Artigo
em Espanhol
| LILACS
| ID: lil-569526
ABSTRACT
Neurocardiogenic syncope (NCS) is diagnosed by means of a head-up tilt table tests (HUTT). This is a prolonged test although early outcome predictors are known. METHODS:
We conducted a study among patients engaged in a syncope study protocol. We performed HUTT in all of them and compared the basal arterial pressure with the arterial pressure at the end of a the 70 degrees tilting.RESULTS:
We performed 185 HUTT studies. Systolic blood pressure (BP) raised 0.9% among patients with a negative test, whereas patients with a positive HUTT showed a 2.3% decrease (p = 0.2) in the same measurement. Diastolic BP increased 34% among negative HUTT patients and 14.9% among patients with positive test (p = 0.02). We calculated a relative risk of 1.45 for positive test when the combination of systolic BD decrease and dyastolic increase was present, according to the percentage of change (IC95% 1.1 to 7.8).CONCLUSIONS:
The combination of systolic BP reduction and diastolic BP elevation at the end of the 70 degrees tilting is associated with an increased risk of having a positive HUTT. These changes might be related to differential sympathetic stimulation.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Pressão Sanguínea
/
Teste da Mesa Inclinada
/
Síncope Vasovagal
Tipo de estudo:
Estudo de etiologia
/
Guia de Prática Clínica
/
Estudo observacional
/
Estudo prognóstico
/
Fatores de risco
Limite:
Feminino
/
Humanos
/
Masculino
Idioma:
Espanhol
Revista:
Arch. cardiol. Méx
Assunto da revista:
Cardiologia
Ano de publicação:
2006
Tipo de documento:
Artigo
País de afiliação:
México
Instituição/País de afiliação:
Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán/MX
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