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Paper Information

Journal:   TANAFFOS   WINTER 2011 , Volume 10 , Number 1; Page(s) 19 To 25.
 
Paper: 

COMPARISON OF IMPULSE OSILLOMETRY SYSTEM AND SPIROMETRY FOR DIAGNOSIS OF OBSTRUCTIVE LUNG DISORDERS

 
 
Author(s):  NIKKHAH MEHDI, AMRA BABAK*, ESHAGHIAN AFROOZ, FARDAD SHAHRIAR, ASADIAN ASSADOLAH, ROSHANZAMIR TOORAJ, AKBARI MOJTABA, GOLSHAN MOHAMMAD
 
* BAMDAD RESPIRATORY AND SLEEP RESEARCH CENTER SHEIKH MOFID ST,8164763831, ISFAHAN IRAN
 
Abstract: 
Background: Obstructive lung disease is a growing health problem, especially in developed countries. This study aimed to compare Impulse Osillometry System (IOS) and Spirometry for evaluation of Chronic Obstructive Pulmonary Disease and asthma.
Materials and Methods: The study groups contained 87 healthy people, 87 asthmatic patients and 56 COPD patients.
Spirometry (FVC, FEV1, FEV1/FVC) and IOS (R5, R20, X5) measurements were performed for all the healthy subjects and patients. The results of IOS were compared with spirometric results.
Results: Significant differences were detected among the 3 groups (control, COPD and asthma) in terms of all the spirometric parameters (FVC, FEV1, FEV1/FVC) and some parameters of IOS (R5, R20, X5) measurements (p<0.05) .
Among COPD patients, sensitivity for X5 (the best value of IOS measurements in the COPD group) was 76%. Also, in asthmatic patients, sensitivity for R20 (the best value of IOS measurements in the asthma group) was 77%. We found a correlation between R5, R20 and X5 with FEV1 in asthmatic patients, but only R5 had this correlation with FEV1 in COPD patients.
Conclusion: We concluded that IOS can be an alternative for spirometry in the diagnosis of obstructive lung disease in patients with minimal cooperation. R5 can represent COPD severity.
 
Keyword(s): IMPULSE OSILLOMETRY SYSTEM (IOS), SPIROMETRY, ASTHMA, COPD
 
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