Reproducibility of visual analog scale measurements of dyspnea in patients with chronic obstructive pulmonary disease.

@article{Mador1992ReproducibilityOV,
  title={Reproducibility of visual analog scale measurements of dyspnea in patients with chronic obstructive pulmonary disease.},
  author={M Jeffery Mador and Thomas J Kufel},
  journal={The American review of respiratory disease},
  year={1992},
  volume={146 1},
  pages={82-7}
}
The purpose of this study was to evaluate the reproducibility of visual analog scale ratings of the effort to breathe (VASe) and the degree of discomfort evoked by breathing (VASd) in patients with chronic obstructive pulmonary disease (COPD) during exercise. Six subjects with moderately severe COPD (FEV1 = 1.12 +/- 0.29 L, FEV1/FVC = 44 +/- 4%) underwent progressive incremental exercise testing to a symptom-limited maximum every week for 8 wk. VASe and VASd were highly correlated in each… CONTINUE READING
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