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Office spirometry correlates with laboratory spirometry in patients with symptomatic asthma and COPD.
- Source :
-
The clinical respiratory journal [Clin Respir J] 2017 Nov; Vol. 11 (6), pp. 805-811. Date of Electronic Publication: 2015 Dec 22. - Publication Year :
- 2017
-
Abstract
- Objectives: Spirometry remains underutilized in the evaluation of obstructive lung disease. While office spirometry (OS) has been compared to formal laboratory-based spirometry (LS) in healthy subjects, the correlation has never been formally assessed in patients with symptomatic obstructive lung disease. The aim of this study was to investigate the correlation in this population.<br />Methods: We used a retrospective study design to analyze spirometry data from patients that underwent both OS and LS. Two flow sensing office (portable) spirometers were used and compared with laboratory-based (body plethymosgraph) spirometer. Accuracy and reliability were assessed using Bland Altman analysis.<br />Results: Among 185 patients with symptomatic obstructive lung disease, 129 had undergone both OS and LS. Of these, 107 patients had both tests performed less than 90 days apart and were included in final analyses. Mean age was 54 years with mean FEV1 of 1.97 L (65% predicted). Ninety-two patients had airflow obstruction, as determined by a FEV1/FVC ratio of <70%. We found significant correlation in the values between OS and LS for both FEV1 and FVC (r = 0.937 and 0.90, respectively, P < 0.001). Eighty-seven percent of patients had a concordant spirometry in terms of airflow obstruction. Correlation was independent of the office spirometer (and hence the Flow-sensing mechanism) used.<br />Conclusions: In patients with known asthma and chronic obstructive pulmonary disease (COPD), OS is accurate and reliable when compared to formal laboratory-based spirometry. Routine use of OS should be encouraged to improve spirometry utilization and healthcare outcomes in patients with Asthma and COPD.<br /> (© 2015 John Wiley & Sons Ltd.)
- Subjects :
- Adult
Aged
Female
Forced Expiratory Volume physiology
Humans
Lung physiopathology
Male
Middle Aged
Outcome Assessment, Health Care statistics & numerical data
Practice Patterns, Physicians' standards
Reproducibility of Results
Retrospective Studies
Spirometry trends
Vital Capacity physiology
Asthma physiopathology
Clinical Laboratory Techniques statistics & numerical data
Office Visits statistics & numerical data
Pulmonary Disease, Chronic Obstructive physiopathology
Spirometry statistics & numerical data
Subjects
Details
- Language :
- English
- ISSN :
- 1752-699X
- Volume :
- 11
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- The clinical respiratory journal
- Publication Type :
- Academic Journal
- Accession number :
- 26620598
- Full Text :
- https://doi.org/10.1111/crj.12419