Platypnea-orthodeoxia syndrome (POS) is a rare clinical condition characterized by dyspnea and hypoxemia during orthostatism, with relief in the supine position. The diagnosis of POS requires a high clinical suspicion, and its etiology stems from the admixture of venous blood, poor in oxygen, with arterial blood via a shunt. A patent foramen ovale (PFO) is the most commonly encountered anomaly at the root of POS. Here, we present the case of a 67-year-old female patient where suspected POS led to the diagnosis of a PFO, which was the cause of an ischemic stroke.
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| http://dx.doi.org/10.7759/cureus.75970 | DOI Listing |
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Platypnea-Orthodeoxia Syndrome: Manifestation of a Patent Foramen Ovale.
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Internal Medicine, Hospital Infante D. Pedro, Aveiro, PRT.
Platypnea-orthodeoxia syndrome (POS) is a rare clinical condition characterized by dyspnea and hypoxemia during orthostatism, with relief in the supine position. The diagnosis of POS requires a high clinical suspicion, and its etiology stems from the admixture of venous blood, poor in oxygen, with arterial blood via a shunt. A patent foramen ovale (PFO) is the most commonly encountered anomaly at the root of POS.
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Article Synopsis
- Platypnea orthodeoxia syndrome (POS) is a rare cause of low oxygen levels that requires careful clinical evaluation and collaboration among specialists for diagnosis.
- An 86-year-old male presented to the ER with low oxygen saturation (84%) and did not improve with supplemental oxygen; however, his oxygen levels increased significantly when lying down.
- Diagnosis was confirmed through echocardiography revealing a large patent foramen ovale (PFO) causing a right-to-left shunt; he was treated successfully, improving his oxygen levels and allowing him to go home without supplemental oxygen.*
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