To compare negative expiratory pressure technique with conventional tests in detecting expiratory flow limitation in chronic obstructive pulmonary diseases patients
10.3760/cma.j.issn.0578-1426.2010.02.011
- VernacularTitle:对比呼气负压与传统方法检测慢性阻塞性肺疾病患者呼气气流受限
- Author:
Rui CHEN
;
Rongchang CHEN
;
Jie LIU
;
Yanyi CEN
;
Lian CHEN
- Publication Type:Journal Article
- Keywords:
Pulmonary disease;
chronic obstructive;
Dyspnea;
Expiratory flow limitation
- From:
Chinese Journal of Internal Medicine
2010;49(2):122-124
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare negative expiratory pressure (NEP)technique with conventional test in detecting expiratory flow limitation (EFL)in chronic obstructive pulmonary diseases( COPD) patients. Methods EFL was measured with NEP technique and conventional method respectively in 72 COPD patients;EFL was measured with NEP technique in 20 COPD patients who failed to perform conventional test. Results EFL was detected in 54 of the 72 COPD patients. NEP test was successfully performed on the 20 patients, and 19 of them were found with EFL. The level of forced expired volume in one second percentage( FEV_1 % ) of the patients with 2-score group (46. 92 ± 12. 74) % and 3-score group (33. 35 ± 8.96)% were significantly lower than that of the 1-score group(63. 60 ±16.65)%. Area under curve of NEP technique and conventional test in ROC is 0. 903 and 0. 761 respectively. Conclusions As compared with conventional test, EFL detected with NEP technique is more reliable in evaluating dyspnea of COPD patients. It is simple and doesn't require any cooperation of the patients. NEP technique can be applied in COPD patients who fail to receive conventional test.
