COMPARISON OF FEV1 AND PEF VALUES IN COUGH VARIANT ASTHMA DURING METHACHOLINE CHALLENGE TEST

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GHODRATI S.; HORMATI A.; MOUSAVI NASAB N.; AFIFIAN M.

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Journal: Journal of Advances in Medical and Biomedical Research Year:2012 | Volume:19 | Issue:77 Page(s): 22-30

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Information Journal Paper

Title

COMPARISON OF FEV1 AND PEF VALUES IN COUGH VARIANT ASTHMA DURING METHACHOLINE CHALLENGE TEST

Author(s)

GHODRATI S. | HORMATI A. | MOUSAVI NASAB N. | AFIFIAN M. | Issue Writer Certificate

Keywords

ASTHMAQ3

CVAQ2

FEV1Q2

PEFQ2

METHACHOLINEQ2

Abstract

Background and Objective: ASTHMA is one of the most common chronic diseases with an increasing prevalence. The cough variant of ASTHMA (CVA) is a latent form of the disease. The aim of this study is to compare the decreasing rates of FEV1 and PEF during the METHACHOLINE challenge test.Materials and Methods: In this study, we tested a total of 120 patients (14-65 years old), who were referred to the respiratory clinic with complaints of chronic cough, using normal chest and sinus x-ray and spirometry. Also other causes of chronic cough were rulled out. Spirometry and Peak Flowmetry were done during the METHACHOLINE challenge test, and then FEV1 and PEF were recorded.Results: From 120 patients, 47 patients (39.2%) were male and 73 (60.8%) were female. Thirty three (27.5%) patients showed a³20% decrease in FEV1, while 35 patients (29.2%) had a³20% decrease in PEFp. Decreasing values of FEV1 and PEFp with r=0.49 and P-value<0.0001 were significant. Normalization for age, sex, and occupation shows that these factors have no effects on the decrease observed for FEV1 and PEFp.Conclusion: Based on the correlation ratio for PEFp in comparison with spirometry s FEV1, we suggest using peak flowmetry instead of spirometry for diagnosing CVA. According on the ROC-curve, we recommend a³15.5% decrease in the level of PEFp with 79% sensitivity and 69% specificity.

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APA: Copy

GHODRATI, S., HORMATI, A., MOUSAVI NASAB, N., & AFIFIAN, M.. (2012). COMPARISON OF FEV1 AND PEF VALUES IN COUGH VARIANT ASTHMA DURING METHACHOLINE CHALLENGE TEST. JOURNAL OF ADVANCES IN MEDICAL AND BIOMEDICAL RESEARCH, 19(77), 22-30. SID. https://sid.ir/paper/61103/en

Vancouver: Copy

GHODRATI S., HORMATI A., MOUSAVI NASAB N., AFIFIAN M.. COMPARISON OF FEV1 AND PEF VALUES IN COUGH VARIANT ASTHMA DURING METHACHOLINE CHALLENGE TEST. JOURNAL OF ADVANCES IN MEDICAL AND BIOMEDICAL RESEARCH[Internet]. 2012;19(77):22-30. Available from: https://sid.ir/paper/61103/en

IEEE: Copy

S. GHODRATI, A. HORMATI, N. MOUSAVI NASAB, and M. AFIFIAN, “COMPARISON OF FEV1 AND PEF VALUES IN COUGH VARIANT ASTHMA DURING METHACHOLINE CHALLENGE TEST,” JOURNAL OF ADVANCES IN MEDICAL AND BIOMEDICAL RESEARCH, vol. 19, no. 77, pp. 22–30, 2012, [Online]. Available: https://sid.ir/paper/61103/en

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