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.
Article
in Es
| LILACS
| ID: lil-569526
Responsible library:
BR1.1
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.
Full text:
1
Collection:
01-internacional
Database:
LILACS
Main subject:
Blood Pressure
/
Tilt-Table Test
/
Syncope, Vasovagal
Type of study:
Etiology_studies
/
Guideline
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Female
/
Humans
/
Male
Language:
Es
Journal:
Arch. cardiol. Méx
Journal subject:
CARDIOLOGIA
Year:
2006
Document type:
Article
Affiliation country:
Mexico
Country of publication:
Mexico