Correlation of lung function tests with dyspnoea scale, 12 minute walking test and visual analogue scale in patients...

Twenty-five patients with chronic bronchitis and emphysema were studied in an attempt to evaluate clinical methods for rating dyspnoea. Whereas the Medical Research Council (MRC) dyspnoea scale and the 12-minute walking test showed good correlation with pulmonary function tests, the visual analogue scale (VAS) did not. When the dyspnoea scales were compared with one another, the MRC scale and the VAS and the MRC scale and 12 minute walking test showed good correlation with one another.