Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
CASE REPORTS
Paradoxical Cerebellar Embolism Associated with Platypnea-orthodeoxia Syndrome
Kei-ichiro TakaseNorihisa MaedaShoji KawakamiShujiro Inoue
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JOURNAL OPEN ACCESS

2021 Volume 60 Issue 24 Pages 3987-3990

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Abstract

Platypnea-orthodeoxia syndrome is a rare clinical entity characterized by dyspnea and arterial blood deoxygenation in a sitting position. An 89-year-old woman was diagnosed with subacute cerebellar infarction. Her blood oxygen saturation decreased to 88% in a sitting position, resulting in dyspnea. Cardiological thoracic computed tomography revealed an unruptured aortic aneurysm, an enlarged ascending aorta, right atrial compression, and counterclockwise rotation of the heart. An anatomical distortion of the atrial septum induced by these abnormalities directed the atrial venous inflow such that the right-left shunt flow was exacerbated in a sitting position.

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© 2021 by The Japanese Society of Internal Medicine
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