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Inicio Medicina Clínica (English Edition) The relevance of the ankle-arm index to the reclassification of cardiovascular r...
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Vol. 144. Issue 10.
Pages 435-439 (May 2015)
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Vol. 144. Issue 10.
Pages 435-439 (May 2015)
Original article
The relevance of the ankle-arm index to the reclassification of cardiovascular risk in asymptomatic hypertensive middle-aged men
Importancia del índice tobillo-brazo en la reclasificación del riesgo cardiovascular de varones hipertensos asintomáticos de mediana edad
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Víctor Oliverasa,b,
Corresponding author
voliveras.bcn.ics@gencat.cat

Corresponding author.
, Montserrat Martín-Baranerac, Maya Graciad, José Luís del Vale, Miquel Plansf, Núria Pujol-Moixa,g
a Departamento de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
b Centro de Salud Adrià, Institut Català de la Salut, Barcelona, Spain
c Servicio de Epidemiología Clínica, Consorci Sanitari Integral, L’Hospitalet de Llobregat, Barcelona, Spain
d Unitat de Risc Vascular, Clínica Sagrada Familia, Barcelona, Spain
e Unitat de Suport a la Recerca Barcelona Ciutat, Institut Universitari d’Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Barcelona, Spain
f Centro de Salud Verdaguer, Institut Català de la Salut, Sant Joan Despí, Barcelona, Spain
g Institut d’Investigació Biomèdica Sant Pau (IIRB), Barcelona, Spain
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Tables (2)
Table 1. General characteristics of both groups.
Table 2. Predictive factors independent of hypertension: logistic regression analysis.
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Abstract
Background and objective

The ankle-brachial index allows for the detection of subclinical cardiovascular disease and risk, by diagnosing peripheral arterial disease and arterial calcification. Asymptomatic hypertensive men, between 45 and 55 years and with the suspicion of low risk, could be an important population group to benefit from this technique. The aim of the study was to compare the frequency of abnormal ankle-brachial index (subclinical peripheral arterial disease and arterial calcification) between asymptomatic hypertensive and non-hypertensive men, of the same age and suspicion of low risk.

Patients and methods

Two hundred and forty-four asymptomatic men (122 hypertensive and 122 non-hypertensive), between 45 and 55 years and an REGICOR index <10, were voluntarily recruited using consecutive sampling. Complete anamnesis, physical examination, laboratory tests and ankle-brachial index determination were carried out on all patients.

Results

We detected abnormal ankle-brachial index values in 9.8% (12 cases) of the hypertensive subjects and in 1.6% (2 cases) of non-hypertensive subjects (p=.006). In the multivariate analysis, hypertension was significantly associated with an abnormal ankle-brachial index (p<.026) (odds ratio [OR] 5.9, 95% confidence interval [95% CI] 1.2–28.3), smoking (p=.018) (OR 2.7; 95% CI 1.2–6.2) and abdominal obesity (p=.005) (OR 2.8; 95% CI 1.3–5.9).

Conclusions

The population group analysed in this study might be considered as an overriding segment for detecting subclinical cardiovascular disease and risk with the ankle-brachial index. Further studies are needed to establish the prevalence of abnormal ankle-brachial index in this population in order to assess its efficiency.

Keywords:
Hypertension
Middle-aged men
Cardiovascular risk
Ankle-brachial index
Asymptomatic patients
Resumen
Fundamento y objetivo

El índice tobillo-brazo permite detectar riesgo y enfermedad cardiovascular subclínica, diagnosticando enfermedad arterial periférica y calcificación arterial. Los varones hipertensos asintomáticos, con edades entre 45-55 años y baja sospecha de riesgo, podrían ser un importante grupo poblacional para beneficiarse de esta técnica. El objetivo del presente estudio ha sido comparar la frecuencia de índice tobillo-brazo patológico (enfermedad arterial periférica subclínica y calcificación arterial) entre varones hipertensos y no hipertensos en esta franja de edad, asintomáticos y con baja sospecha de riesgo.

Pacientes y método

Un total de 244 varones asintomáticos (122 hipertensos y 122 no hipertensos) entre 45-55 años de edad y REGICOR<10 fueron seleccionados voluntariamente mediante muestreo consecutivo. Se practicó anamnesis, exploración física, analítica e índice tobillo-brazo a todos los pacientes.

Resultados

Se detectó índice tobillo-brazo patológico en el 9,8% (12 pacientes) de los hipertensos y en el 1,6% (2 pacientes) de los no hipertensos (p=0,006). En el análisis multivariante la hipertensión arterial se asoció significativamente (p=0,026) con índice tobillo-brazo patológico (odds ratio [OR] 5,9; intervalo de confianza del 95% [IC 95%] 1,2-28,3), tabaquismo (p=0,018) (OR 2,7; IC 95% 1,2-6,2) y obesidad abdominal (p=0,005) (OR 2,8; IC 95% 1,3-5,9).

Conclusiones

El grupo poblacional propuesto parece constituir un segmento primordial para detectar riesgo y enfermedad cardiovascular subclínica mediante el índice tobillo-brazo en sujetos con baja sospecha. Será necesario, sin embargo, realizar estudios de prevalencia de índice tobillo-brazo patológico en dicha población para valorar su eficiencia.

Palabras clave:
Hipertensión arterial
Varones de mediana edad
Riesgo cardiovascular
Índice tobillo-brazo
Pacientes asintomáticos

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