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The baseline dyspnea index (BDI) and the transitional dyspnea index (TDI) were used to assess chronic exertion dyspnea prior to each PRP and before/after PRP changes in dyspnea, respectively. BDI is a multidimensional instrument based on three components that evoke dyspnea: magnitude of task, magnitude of effort, and functional impairment. Each component scores from 0 (severe impairment) to 4 (not impaired). A baseline focal score is obtained as the sum of the three components ranged from 0 to 12, the lower the rating the worse the dyspnea. The TDI provides specific criteria for each of the three components to measure change from the baseline state. Change in each component scores from — 3 (major deterioration) to + 3 (major improvement); a TDI focal score is obtained by adding scores for each of the three components (range, — 9 to + 9). Italian translations of the BDI and the TDI were administered. canadian helth& care mall
The HRQL was evaluated by means of the St. George’s respiratory questionnaire (SGRQ). The SGRQ consists of 76 items and measures three components. The first section, “symptoms,” contains items concerned with the level of symptomatology; the second section, “activity,” is concerned with physical activities that either cause or are limited by breathlessness; the final section is “impact,” which covers such factors as employment, being in control of health, panic, stigmatization, need for medication, expectations for health, and disturbances of daily life.