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Vol. 59. Núm. 3.
Páginas 237-244 (enero 2007)
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Vol. 59. Núm. 3.
Páginas 237-244 (enero 2007)
Acceso a texto completo
Disfunción endotelial medida en los miembros inferiores de pacientes con arteriopatía periférica
Endothelial dysfunction measured in the lower extremities of patients with peripheral arterial disease
Visitas
2647
F.J. Medina-Maldonado
Autor para correspondencia
fjmedina@telefonica.net

Correspondencia: Corona, 24, 6.° B. E-28054 Madrid.
, E. Martínez-Aguilar, J. de Haro-Miralles, A. Flórez-González, J.R. March-García, F. Acín
Servicio de Angiología y Cirugía Vascular. Hospital Universitario de Getafe. Getafe, Madrid, España.
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Información del artículo
Resumen
Introducción

Estudios previos sugieren independencia de la disfunción endotelial (DE) en la gravedad de la enfermedad arterial periférica (EAP), cuando la primera se mide mediante la dilatación de la arteria braquial mediada por flujo (DBMF).

Objetivos

Analizar mediante la medición de la dilatación mediada por flujo en la arteria femoral (DFMF) la DE en los miembros inferiores (MMII) de pacientes con EAP, y estudiar su relación con la DBMF y el índice tobillo/brazo (ITB).

Sujetos y métodos

Dos grupos de sujetos; A: sanos con ITB > 0,9 y < 30 años (n = 32); B: pacientes con EAP sintomática e ITB < 0,9 (n = 33). Se determina la DBMF y la DFMF e ITB en ambos MMII. 12 femorales fueron medidas en dos ocasiones para calcular el coeficiente de variación intraobservador.

Resultados

El coeficiente de variación fue 2,6%. En los enfermos, el ITB es 0,58 ± 0,14 en el miembro sintomático y 0,76 ± 0,18 en el contralateral (p < 0,001). La DFMF del miembro sintomático fue 0,66 ± 3,4%, frente a 1,64 ± 3,5% en el contralateral (p = 0,39). En MMII sanos fue 4,53 ± 2,3%, frente al 0,66% de los enfermos (p < 0,001). La DBMF fue A: 10,04 ± 4,07%; B: 5,18 ± 4,8% (p < 0,001). El coeficiente de correlación entre DBMF/DFMF es 0,53 (p < 0,001) y entre DFMF/ITB es −0,07 (p = 0,5).

Conclusiones

La DFMF es una técnica válida y equiparable a la DBMF en la valoración de la DE. La DFMF es inferior en los enfermos. Su similitud entre miembros diferentemente afectados y su nula correlación con el ITB, apoyan la independencia de la DE en la gravedad de la EAP.

Palabras clave:
Arterioesclerosis
Dilatación braquial
Dilatación femoral
Disfunción endotelial
Enfermedad arterial periférica
Isquemia crónica
Summary
Introduction

Earlier studies suggest that endothelial dysfunction (ED) is independent in the severity of peripheral arterial disease (PAD), when the former is measured by brachial artery flow-mediated dilation (BAFMD).

Aims

The objective of this study was to use the measurement of the femoral artery flow-mediated dilation (FAFMD) to analyse ED in the lower extremities (LE) of patients with PAD, and to study its relation with BAFMD and the anklebrachial index (ABI).

Patients and methods

We took two groups of subjects; A: healthy subjects with an ABI > 0.9 and < 30 years old (n = 32); B: patients with symptomatic PAD and an ABI < 0.9 (n = 33). The BAFMD and the FAFMD and ABI were determined in both LE. Twelve femorals were measured on two occasions to calculate the intra-observer coefficient of variation.

Results

The coefficient of variation was 2.6%. In the patients, the ABI was 0.58 ± 0.14 in the symptomatic extremity and 0.76 ± 0.18 in the contralateral limb (p < 0.001). The FAFMD of the symptomatic limb was 0.66 ± 3.4% versus 1.64 ± 3.5% in the contralateral limb (p = 0.39). In healthy LE it was 4.53 ± 2.3% versus 0.66% in healthy subjects (p < 0.001). The BAFMD was A: 10.04 ± 4.07%; B: 5.18 ± 4.8% (p = 0.001). The coefficient of correlation between BAFMD and FAFMD was 0.53 (p < 0.001), and between FAFMD and ABI it was found to be –0.07 (p = 0.5).

Conclusions

FAFMD is a valid technique of a similar value to BAFMD for evaluating ED. FAFMD was lower in the patients. The similarity observed between limbs with different degrees of involvement and the null correlation with the ABI support the independence of ED in the severity of PAD.

Key words:
Arteriosclerosis
Brachial artery dilation
Chronic ischaemia
Endothelial dysfunction
Femoral dilation
Peripheral arterial disease
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