Design and Verification of a COPD Screening Equipment Based on Dual-differential Pressure Throttling Technique / 中国医疗器械杂志
Chinese Journal of Medical Instrumentation
;
(6): 263-265, 2019.
Article
in Chinese
| WPRIM
| ID: wpr-772511
ABSTRACT
This study was to design a chronic obstructive pulmonary disease (COPD) screening equipment, based on the dual-differential pressure throttling technique. The technique combined a wide range, but low-resolution ratio sensor and a narrow range, but high-resolution ratio one. It can accurately detect the indexes of forced vital capacity (FVC), forced expiratory volume in one second (FEV), one second rate(FEV/FVC (%)), and achieve them in a low-cost way. The new designed machine will be compared with a British machine, named ML-3500. The correlations of FVC and FEV between new machine and ML-3500 were 0.998 and 0.999, respectively. The P values of paired test of these two indexes were over 0.05. Bland-Altman analysis of FVC, FEV and FEV/FVC (%) showed that more than 90% of the scatter points of the three parameters fell within the consistency interval. This machine can be used to accurately screen COPD and its low-cost would be advantage to promote in large population.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Respiratory Function Tests
/
Tidal Volume
/
Vital Capacity
/
Forced Expiratory Volume
/
Reproducibility of Results
/
Pulmonary Disease, Chronic Obstructive
/
Diagnosis
/
Economics
Type of study:
Diagnostic study
/
Health economic evaluation
/
Screening study
Limits:
Humans
Language:
Chinese
Journal:
Chinese Journal of Medical Instrumentation
Year:
2019
Type:
Article
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