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Vol. 36. Issue 1.
Pages 25-28 (January 2000)
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Vol. 36. Issue 1.
Pages 25-28 (January 2000)
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Comparación de varias escalas de medición para valorar la disnea en las actividades diarias en los pacientes con enfermedad pulmonar obstructiva crónica
Comparison of several scales for assessing dyspnea during daily activities in patients with chronic obstructive pulmonary disease
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J.M. Ruiz de Oña Lacasta*, L. Puente Maestu*, J.L. Rodríguez Hermosa, E. Tatay Martí, J.M. Cubillo Marcos
Servicio de Neumología. Hospital General Universitario Gregorio Marañón. Madrid
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Objetivo

Comparar dos clases de instrumentos de medición de la disnea con la capacidad funcional definida como la captación máxima de oxígeno en una prueba de esfuerzo limitada por síntomas.

Método

Se realizó un estudio descriptivo para evaluar la correlación entre métodos. Se seleccionaron sujetos con EPOC grave y se evaluó la disnea en las actividades diarias mediante la escala del Medical Research Council (MRC) y se administró el cuestionario de percepción de salud en enfermedades respiratorias crónicas (CRQ). También se evaluó la disnea mediante la escala visual analógica (VAS) y mediante la escala de Borg. Se realizó una prueba progresiva de esfuerzo en tapiz rodante, limitada por síntomas, para medir la captación de O2 pico (VO2 pico) y la ventilación-minuto pico (VE pico).

Resultados

Al analizar la relación existente entre las medidas obtenidas en las escalas de medición de la disnea y las medidas objetivas de la capacidad funcional (VO2 pico y VE pico), encontramos que las escalas de disnea clínica (CRQ, MRC) tienen una buena correlación tanto con la capacidad aeróbica máxima como con la ventilación máxima, mientras que las escalas de Borg y VAS tienen una correlación no significativa con dichas variables. También observamos que las escalas de medición de la disnea clínica tienen una correlación entre ellas excelente, al igual que ocurre entre las escalas de Borg y VAS, pero no existe correlación entre los dos tipos de escalas de medición.

Conclusiones

Se concluye que los índices de disnea clínica (CRQ y MRC) tienen una correlación buena con la capacidad aeróbica máxima del sujeto y entre sí. Sin embargo, las escalas de Borg y VAS no se correlacionan con la capacidad funcional medida pro el VO2 pico y la VE pico.

Palabras clave:
EPOC
Disnea
Medición

The objective of this study was to compare two instruments for measuring dyspnea to functional capacity, defined as maximal oxygen uptake in a stress test limited by symptoms.

We carried out a descriptive study to determine correlation between the methods. Subjects with severe chronic obstructive pulmonary disease were enrolled and dyspnea during daily activities was evaluated using the Medical Research Council (MRC) scale and the chronic respiratory disease health perception questionnaire (CRQ). Dyspnea was also assessed on a visual analog scale (VAS) and the Borg scale. Patients performed a progressive treadmill test limited by symptoms to measure peak VO2 and VE.

Correlation analysis of the two measures of dyspnea and the objective measures of functional capacity (peak VO2 and VE) showed that the clinical dyspnea measures (CRQ and MRC) correlated well with peak aerobic capacity and with maximal ventilation, whereas the VAS and Borg scale were not significantly related to the aforementioned variables. We also observed that the clinical scales for dyspnea correlated with each other, as did the VAS and Borg scale, but that there was no correlation between the two types of measurement.

We conclude that clinical dyspnea indexes (CRQ and MRC) correlate well with maximal aerobic capacity and with each other. However, the VAS and Borg scale do not correlate with functional capacity measured by peak VO2 and VE.

Key words:
COPD
Dyspnea
Measurement
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Copyright © 2000. Sociedad Española de Neumología y Cirugía Torácica
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