B lunted dyspnea perception in severe asthmatics.
- Author:
Kwang Won KANG
;
In Seon CHOI
;
Seog Chea PARK
;
Ho LIM
;
An Soo JANG
- Publication Type:Original Article
- Keywords:
dyspnea, perception;
asthma;
resistive load
- MeSH:
Aged;
Asthma;
Dyspnea*;
Humans;
Mortality;
Respiration;
Spirometry
- From:Journal of Asthma, Allergy and Clinical Immunology
1999;19(2):173-180
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND: Blunted perception of dyspnea, which may be related to the increased mortality, has been demonstrated in patients with a history of near-fatal asthma and in the elderly. OBJECTIVE: The purpose of this study was to evaluate the relationship between the perception of dyspnea and the severity of asthma. METHOD: Baseline spirometry and Borg score change(A Borg score) during breathing through an inspiratory muscle trainer were measured in 27 consecutive asthma patients and 11 normal subjects. RESULTS: The baseline Borg score was negatively related to FEV1 A Borg score was significantly lower in asthmatics than in controls at high level of loads. A Borg score was lower in severe asthma than in mild asthma. A Borg score was positively related to the baseline FEV1. Seventy-five percent of severe asthma, 62.5% of moderate one, and 9.1% of mild one showed impaired dyspnea perception. Dyspnea perception was related to age(r, = -0.49, p<0.001). CONCLUSION: Three quarters of patients with severe asthma showed impaired dyspnea perception to inspiratory resistive load. Dyspnea perception was related to asthma severity and age.
