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Adaptación cardíaca y vascular paralela en la hipertensión
1Department of Medicine, New York Hospital-Cornell Medical Center, New York 10021.
Circulation
|December 1, 1992
Resumen
La hipertensión causa cambios en la arteria carótida común.
Área de la Ciencia:
- Medicina Cardiovascular La medicina cardiovascular es una especialidad de la salud.
- Biología Vascular Biología Vascular
- Investigación de la Hipertensión Investigación de la Hipertensión
Sus antecedentes:
- El daño vascular en la hipertensión contribuye a las complicaciones.
- Existe un conocimiento limitado sobre la geometría arterial y la función en la hipertensión sin complicaciones.
- La relación entre los cambios arteriales y la hipertrofia ventricular izquierda no está clara.
Objetivo del estudio:
- Para investigar in vivo la geometría y la función arterial en la hipertensión sin complicaciones.
- Para explorar la relación entre los cambios arteriales y la hipertrofia ventricular izquierda.
Principales métodos:
- La ecografía evaluó el grosor y el diámetro de la pared de la arteria carótida común (ACC) en 43 sujetos hipertensos y 43 normotensos.
- La rigidez vascular estimada a partir de las formas de onda de la presión carotídea.
- La ecocardiografía evaluó el tamaño y la función del ventrículo izquierdo (LV).
Principales resultados:
- Los pacientes hipertensos mostraron un aumento en el grosor de las paredes LV y CCA y en la masa LV.
- El 28% de los pacientes hipertensos habían aumentado el grosor carotídeo íntimo-medial.
- La rigidez vascular se incrementó significativamente en pacientes hipertensos a pesar de presiones de pulso similares.
Conclusiones:
- La hipertensión no complicada se asocia con cambios geométricos y funcionales en el CCA.
- Estas alteraciones de la arteria carótida son paralelas a las alteraciones observadas en el ventrículo izquierdo.
- Queda por determinar la contribución de estos cambios vasculares a las complicaciones cardiovasculares en la hipertensión.
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