{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T11:37:07Z","timestamp":1788781027095,"version":"build-2803163510"},"reference-count":16,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2025,8,3]],"date-time":"2025-08-03T00:00:00Z","timestamp":1754179200000},"content-version":"vor","delay-in-days":2,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Case Reports"],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p>Platypnea\u2010orthodeoxia syndrome is a rare disorder characterized by dyspnea (platypnea) and arterial desaturation (orthodeoxia) in the upright position, with symptom relief upon lying down. This syndrome is commonly associated with cardiac anomalies, particularly patent foramen ovale (PFO), where increased right atrial pressure facilitates right\u2010to\u2010left shunting, leading to hypoxemia. Other associated conditions include cirrhosis, pericardial effusion, and pneumonectomy. We present a 32\u2010year\u2010old female with a history of right pneumonectomy for invasive aspergillosis who presented with worsening dyspnea and a greater than 10% drop in SpO<jats:sub>2<\/jats:sub> when seated compared to the supine position. Initial imaging demonstrated rightward displacement of thoracic structures, including the right atrium, but a transthoracic echocardiogram was negative for intracardiac shunt. Due to persistent hypoxemia, a transesophageal echocardiogram was performed, revealing a right\u2010to\u2010left shunt, an atrial septal aneurysm, and a prominent Eustachian valve. The patient underwent successful PFO closure, leading to the complete resolution of both dyspnea and hypoxemia. This case emphasizes the importance of comprehensive diagnostic evaluation in patients with POS, especially those with complex cardiopulmonary histories.<\/jats:p>","DOI":"10.1002\/ccr3.70715","type":"journal-article","created":{"date-parts":[[2025,8,4]],"date-time":"2025-08-04T04:00:20Z","timestamp":1754280020000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Platypnea\u2010Orthodeoxia Syndrome Post\u2010Pneumonectomy: A Case of Right\u2010To\u2010Left Shunting and Successful <scp>PFO<\/scp> Closure"],"prefix":"10.1002","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5210-2875","authenticated-orcid":false,"given":"Cristian","family":"Castillo\u2010Rodriguez","sequence":"first","affiliation":[{"name":"Department of Internal Medicine Texas Tech University Health Sciences Center  Lubbock Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-9489-7641","authenticated-orcid":false,"given":"Dina","family":"Soliman","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine Texas Tech University Health Sciences Center  Lubbock Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michel","family":"Juarez","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine Texas Tech University Health Sciences Center  Lubbock Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sherif","family":"Roman","sequence":"additional","affiliation":[{"name":"Division of Cardiology Texas Tech University Health Sciences Center  Lubbock Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John","family":"Abdelmalek","sequence":"additional","affiliation":[{"name":"Division of Cardiology Texas Tech University Health Sciences Center  Lubbock Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhaunn","family":"Sly","sequence":"additional","affiliation":[{"name":"Division of Cardiology Texas Tech University Health Sciences Center  Lubbock Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ankush","family":"Lahoti","sequence":"additional","affiliation":[{"name":"Division of Cardiology Texas Tech University Health Sciences Center  Lubbock Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Victor","family":"Test","sequence":"additional","affiliation":[{"name":"Division of Pulmonary and Critical Care Texas Tech University Health Sciences Center  Lubbock Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,8,3]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.athoracsur.2007.08.011"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/clc.22301"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/ccd.25953"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejim.2013.08.698"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.1148\/rg.321115014"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.1164\/rccm.201407-1254CI"},{"issue":"2","key":"e_1_2_12_8_1","first-page":"274","article-title":"Mechanisms of Platypnea\u2010Orthodeoxia Syndrome","volume":"92","author":"Salas\u2010Pacheco J. 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