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  • Title: [Preliminary criteria for the diagnosis of pulmonary hypertension in mixed connective tissue disease].
    Author: Nishimaki T, Aotsuka S, Kunieda T, Yokohari R.
    Journal: Ryumachi; 1991 Apr; 31(2):159-66. PubMed ID: 1925794.
    Abstract:
    Based on analysis of data obtained from multicenter patients with collagen diseases (83 with pulmonary hypertension(PH) and 472 without PH), preliminary criteria for the diagnosis of PH in mixed connective tissue disease (MCTD) were proposed by the Research Committee for MCTD of the Ministry of Health and Welfare of Japan. The diagnosis of PH requires four or more out of six clinical and laboratory findings, including exertional dyspnea, systolic pulsation on the left sternum, increased 2nd pulmonary sound, dilatation of the pulmonary artery on chest X-ray, right ventricular hypertrophy on the electrocardiogram, and right ventricular enlargement on the echocardiogram. Alternatively, either an increase of mean pulmonary artery pressure over 25 mmHg measured by right ventricle catheterization, or the corresponding finding on Doppler echocardiography is also valid for the diagnosis of PH. When these criteria were applied to the patients in this study, the sensitivity was 92% and the specificity 100%, showing that PH may be adequately diagnosed using non-invasive methods. The number of criteria satisfied by patients with PH was well correlated with their mean pulmonary artery pressure measured by heart catheterization.
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