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Computer Guided Diagnosis of Asthma, Asthmatic Bronchitis, Chronic Bronchitis and Emphy...
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Computer Guided Diagnosis of Asthma, Asthmatic Bronchitis, Chronic Bronchitis and Emphysema
作者:
R.J. van Meerten,
J.R. Durinck,
C. de Wit,
期刊:
Respiration
(Karger Available online 1971)
卷期:
Volume 28,
issue 4
页码: 293-305
ISSN:0025-7931
年代: 1971
DOI:10.1159/000192819
出版商: S. Karger AG
关键词: Expiratory gas concentration curves;Minimum radius of exponential phase;He1•5;MHe;RHe;RCO2;Reversibility;M1
数据来源: Karger
摘要:
It may be possible to describe and diagnose 4 lung diseases of the group CNSLD by laboratory data only, by computer, apart and separated from physician’s diagnosis. Recording of concentration curves of expired gases yield 4 lung parameter values: He1•5, MHe, RHe, RCO2. These, together with 8 other parameter values: FEVC, FEV1 % FEVC, M1 (= FEV1%FIV1%), MVV30/ FIVC, FRC % TLC, RV % TLC, DLCO/body surface area, reversibility of FEV1, and 3 administrative data: age, season and sex, form 15 ‘symptoms’, used together with ‘a priori probability’ to compute diagnosis of (A) asthma bronchiale, (B) bronchitis asthmatica, (C) bronchitis chronica and (E) emphysema pulmonum, from 703 patients in one clinic. The numerical values of the symptoms are grouped in symptom classes. By using chi-square test, Wilcoxon test, and T (=Δ/SE/Δ) test with and without classes, each disease (A, B, C or E) significantly differed in at least 7, 8, 8 and 10 symptoms, respectively, (on the average 12) from the other and in at least 11 symptoms from normal condition. Rank lists for discriminative properties of the symptoms show the importance of the gas concentration curve parameters RCO2, RHe, MHe and He1•5 and also of the parameters: reversibility an
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