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Thallium-201 myocardial scintigram in primary pulmonary hypertension Isao Fujii 1 , Shunnosuke Handa 1 , Hajime Yamazaki 1 , Yoshiro Nakamura 1 1Cardiopulmonary Division, Department of Internal Medicine, School of Medicine, Keio University pp.161-164
Published Date 1984/2/15
DOI https://doi.org/10.11477/mf.1404204391
  • Abstract
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Right heart catheterization is needed for the diagnosis of pulmonary hypertension in patients with primary pulmonary hypertension (PPH), though the procedure was reported to have an un-usually high risk. We examined the usefulness of thallium-201 myocardial scintigraphy for the evalu-ation of right ventricular overloading in patients with PPH. This study includes 5 patients with PPH, diagnosed by the clinical criteria of research commit-tee of PPH in the Ministry of Health and Welfare in Japan (1976). Autopsy was done and diagnosis was confirmed in 4 cases.

The right ventricular (RV) free wall was visualiz-ed in all cases. They were divided into 2 groups by the degree of visualization. The cases with heavier visualization had a higher pulmonary arterial resis-tence. The shape of the interventricular septum was deformed in all cases. It was straight in 3 cases and convex to the left ventricle (LV) in 3. In the later group, a systolic LV-RV pressure difference was less than 25 mmHg. One of these 3 cases showed reversed pressure difference.

We concluded that thallium-201 myocardial scintigraphy could non-invasively assess the degree of RV overloading in PPH.


Copyright © 1984, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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