Abstract
Objetivo
Determinar la efectividad de la automedida de la presión arterial (AMPA) domiciliaria frente al control ambulatorio (MAPA) de 24 h en el diagnóstico de la hipertensión clínica aislada (HCA).
Diseño
Estudio comparativo de medidas repetidas de una prueba (AMPA) con un estándar de referencia (MAPA) en una serie de pacientes con hipertensión arterial esencial.
Ámbito y sujetos de estudio
Se incluirá de forma consecutiva en el estudio a todos los pacientes con hipertensión arterial esencial, en estadio I-II o ligera-moderada, recién diagnosticados o diagnosticados previamente en los que se tenga la sospecha de HCA y que son atendidos en 5 centros de salud urbanos. La muestra necesaria calculada es de 182 pacientes.
Mediciones principales
Se calcularán la prevalencia de HCA, la sensibilidad, la especificidad, los valores predictivos positivo y negativo de la AMPA, con sus correspondientes intervalos de confianza del 95%.
Discusión
Demostrar la fiabilidad de la AMPA en el diagnóstico de la HCA puede suponer un ahorro importante para el sistema sanitario, tanto en costes directos de manejo del paciente hipertenso (fármacos y visitas) como en el utillaje para realizar dicho diagnóstico.
Palabras clave: Automedida de la presión arterial, Hipertensión de bata blanca, Monitarización ambulatoria de la presión arterial
Abstract
Objective
To assess the efectiveness of blood pressure self-monitoring at home in front of 24-h blood pressure ambulatory measurement in isolated clinical hypertension diagnosis.
Design
Comparative study of repeated measurements of self-monitoring home BP and 24-h ambulatory BP measurement in a hypertensive pacients sample.
Setting and subjects to study
Mild-moderate essential hipertensive patients newly diagnosed or previously diagnosed in wich suspect isolated clinical hypertension (BP>140/90 mm Hg in clinical setting repeatedly). It needs a sample of 182 hypertensive patients seen at urban primary health care.
Principal measurements
We compute the isolated clinical hypertension prevalence, the sensibility, specificity and positive and negative predictive values, with 95% confidence intervals.
Discusion
Prove the efectiveness of blood pressure self-monitoring at home in insolated clinical hypertension diagnosis, can involve an important cost saving for health care system as in hypertensive patient management (medicines and office visits), as in diagnosis equipment.
Key words: Blood pressure self-monitoring, White coat hypertension, 24-h ambulatory blood pressure monitoring
Footnotes
El trabajo ha sido financiado completamente con una beca FIS (Fondo Investigaciones Sanitarias) expediente 03/0121 (28 de noviembre de 2003) y con el 2.° premio de los III Ajuts a la Recerca de la Societat Catalana de Medicina Familiar i Comunitària (11 de diciembre de 2003).
Bibliografía
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