The correlation of respiratory resistance and reactance with parameters FEV1%, FEV1/FVC in COPD patients

  • Nguyen Phuong Đong 108 Military Central Hospital
  • Luu Van Hau 108 Military Central Hospital
  • Vu Phi Hai 108 Military Central Hospital
  • Nguyen Thai Cuong 108 Military Central Hospital

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Keywords

FEV1%, FEV1/FVC, Resistance, reactance, correlation

Abstract

Summary


Objective: To determine the correlation of respiratory resistance and reactance with FEV1%, FEV1/FVC in chronic obstructive pulmonary disease (COPD) patients. Subject and method: The study has been done in 108 Military Central Hospital from October 2017 to November 2018, among 150 stable COPD patients. Al blood tests, ECG, Echography and chest X-ray had done. Respiratory resistance (Rrs5 and Rrs20) and reactance (Xrs5) and Pulmonary Function Tests were measured by MostGraph-02 (Chest M.I., Co. Ltd., Tokyo, Japan) in 150 stable COPD patients. Result: Parameters of Pulmonary Function Tests had been decreased: FVC: 2.81 ± 0.52L, FEV1: 1.85 ± 0.34L, FEV1%: 53.1 ± 22.9%, FEV1/FVC: 52.42 ± 10.65%; FEF 25-75 (%): 22.56 ± 13.82%; PEF: 24.37 ± 14,91. Respiratory resistance Rrs5 and Rrs20 were higher and reactance Xrs5 more negative in COPD patients than in normal people. Rrs5 has moderate inverse correlation with FEV1, FEV1% (r= -0.542 and -0.573) and tight inverse correlation (r = -0.61) with FEV1/FVC. Xrs5 has moderate positive correlation with FEV1, FEV1% and FEV1/FVC (r = 0.492, 0.512. 0.559). Conclusion: Respiratory resistance and reactance has correlation with FEV1, FEV1% and FEV1/FVC.


Keywords: Resistance, reactance, correlation, FEV1%, FEV1/FVC.


 

Article Details

References

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Published
Mar 3, 2019
Issue
Volume 14 - No 3/2019
Section
Articles
How to Cite
Phuong ĐongN., Van HauL., Phi HaiV., & Thai CuongN. (2019). The correlation of respiratory resistance and reactance with parameters FEV1%, FEV1/FVC in COPD patients. Tạp Chí Y Dược lâm sàng 108, 14(3). Retrieved from https://tcydls108.benhvien108.vn/index.php/YDLS/article/view/585