Mahler D A
Dartmouth Medical School, Lebanon, NH.
Chest. 1992 May;101(5 Suppl):242S-247S.
The measurement of dyspnea during an exercise task provides an opportunity to simulate daily physical activities that lead to breathing difficulty in patients with lung disease. Although the exact stimulus for the sensation of breathlessness is unknown, it is possible to measure dyspnea during exercise by applying the principles of psychophysics to the analysis of various stimulus-response relationships. It is logical to consider that the exercise task, ie, work or power production, causes both physiologic and perceptual responses. A 0 to 10 category scale with ratio properties developed by Borg and a visual analogue scale are the most commonly used instruments for rating the severity of dyspnea during exercise. The ratings of breathlessness are generally reliable over time and are sensitive to evaluate an acute intervention in patients with stable respiratory disease. The exercise intensity-dyspnea relationship appears to be the most appropriate stimulus-response relationship for quantifying dyspnea during exercise.
在运动任务期间对呼吸困难进行测量，为模拟导致肺部疾病患者出现呼吸困难的日常体力活动提供了契机。尽管导致呼吸急促感觉的确切刺激因素尚不清楚，但通过将心理物理学原理应用于各种刺激-反应关系的分析，在运动期间测量呼吸困难是可行的。认为运动任务，即做功或产生功率，会引起生理和感知反应是合乎逻辑的。由博格开发的具有比率属性的0至10等级量表和视觉模拟量表是运动期间评估呼吸困难严重程度最常用的工具。随着时间推移，呼吸急促评分通常是可靠的，并且对于评估稳定期呼吸系统疾病患者的急性干预措施很敏感。运动强度-呼吸困难关系似乎是运动期间量化呼吸困难最合适的刺激-反应关系。
