A case report of platypnea-orthodeoxia syndrome: A rare condition found during diagnostic workup of a patient with embolic stroke of undetermined sources

• Published in: eNeurologicalSci Vol. 26; p. 100393
• Main Authors: Mizuma, Keita, Sugimoto, Azusa, Mochizuki, Yasuhide, Shinke, Toshiro, Ono, Kenjiro
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.03.2022; Elsevier
• Subjects: Case Report; Embolic stroke of undetermined sources (ESUS); Emergency foramen ovale closure; Interatrial shunt; Platypnea-orthodeoxia syndrome (POS); Transcranial color flow imaging (TC-CFI); TC-CFI; POS; TEE; PFO; Interatrial shunt; ESUS; Platypnea-orthodeoxia syndrome (POS); Embolic stroke of undetermined sources (ESUS); Emergency foramen ovale closure; Transcranial color flow imaging (TC-CFI); POS, platypnea-orthodeoxia syndrome; ESUS, embolic stroke of undetermined sources; TC-CFI, transcranial color flow imaging; TEE, transesophageal echocardiography; PFO, patent foramen ovale

Platypnea-orthodeoxia syndrome (POS) is a rare condition wherein the magnitude of the interatrial shunt changes between the sitting and supine positions. We diagnosed POS in a case initially considered to be of embolic stroke of undetermined source and performed emergency foramen ovale closure as de...