We have newly developed a 5-grade evaluation method, which consists in classifying breathing patterns from abdominal rising and scalenic contraction timing via palpation, and examined the reliability of the method.
In 147 cases of respiratory diseases, grade classification with the 5-grade evaluation method, Hugh-Jones’ evaluation and resting expired air gas analysis were performed, and their results were compared each other.
The average value of tidal volume (V
T) tended to decrease with decreasing the grade; 627.8 m
l/min in degree 5, 627.6 m
l/min in degree 4, 513.9 m
l/min in degree 3, and 436.9 m
l/min in degree 2. The average value of respiratory rate (RR) tended to increase; 13.7 f/min in degree 5, 15.5 f/min in degree 4, 17.2 f/min in degree 3, and 20.5 f/min in degree 2, and ventilatory equivalent for oxygen (V
E/VO
2) tended to increase; 41.8 in degree 5, 49.5 in degree 4, 50.8 in degree 3, and 55.2 in degree 2. Cases of earlier scalenic contraction at inspired air phase showed a tendency of lower respiratory efficiency. The results of the 5-grade evaluation method exhibited a significant correlation (r = -0.444) with those of Hugh-Jones' classification. These results suggest that the present 5-grade evaluation method can reflect the respiratory function of patients with respiratory diseases.
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