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
em Zh
| WPRIM
| ID: wpr-772511
Biblioteca responsável:
WPRO
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.
Palavras-chave
Texto completo:
1
Índice:
WPRIM
Assunto principal:
Testes de Função Respiratória
/
Volume de Ventilação Pulmonar
/
Capacidade Vital
/
Volume Expiratório Forçado
/
Reprodutibilidade dos Testes
/
Doença Pulmonar Obstrutiva Crônica
/
Diagnóstico
/
Economia
Tipo de estudo:
Diagnostic_studies
/
Health_economic_evaluation
/
Screening_studies
Limite:
Humans
Idioma:
Zh
Revista:
Chinese Journal of Medical Instrumentation
Ano de publicação:
2019
Tipo de documento:
Article