Continuous recording of dicrotic and pulse pressures during head-up tilting test: the vasodepressive profile. Preliminary data.
Ital Heart J
; 3(11): 665-72, 2002 Nov.
Article
en En
| MEDLINE
| ID: mdl-12506525
ABSTRACT
BACKGROUND:
The aim of this study was to assess whether a non-invasive automatic evaluation of the pulse wave characteristics could provide clinical clues when monitoring the hemodynamic adjustments to head-up tilting.METHODS:
A continuous assessment of the peripheral pulse wave characteristics (systolic, diastolic, dicrotic and pulse pressures) in 8 control subjects with a negative response to head-up tilting (60 degrees for 45 min) compared to 13 syncopal patients with a vasodepressive one was performed.RESULTS:
Controls exhibited, when up-tilted, an increase in blood pressure as well as in the dicrotic and pulse pressures and no changes in heart rate. On the contrary, syncopal patients showed a progressive increase in heart rate associated with a progressive decrease in dicrotic pressure and a trend towards lower values of pulse pressure, but no changes in systolic pressure. Thereafter and until the pre-syncopal symptoms supervened, the systolic, diastolic and dicrotic pressures progressively declined. A decrease in dicrotic pressure mainly characterized the early vasodepressive response while its increase identified the negative one.CONCLUSIONS:
Our data, even though preliminary, strongly suggest that automatic hemodynamic evaluation is to be used in the clinical setting as a monitor of the sudden changes in blood pressure induced by head-up tilting. Furthermore, the dicrotic and pulse pressures, even those measured during the early phases of the test, should be considered as non-invasive parameters characterizing the vasodepressive response to head-up tilting.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Síncope
/
Presión Sanguínea
/
Determinación de la Presión Sanguínea
/
Pruebas de Mesa Inclinada
Tipo de estudio:
Prognostic_studies
Límite:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Ital Heart J
Asunto de la revista:
CARDIOLOGIA
Año:
2002
Tipo del documento:
Article
País de afiliación:
Italia