• Braz J Anesthesiol · Jun 2021

    Case Reports

    Platypnea-orthodeoxia syndrome: an intriguing perioperative hypoxemia case report.

    • Eunice Mendes, Mariana Vaz Gomes, Cláudia Carreira, Nídia Gonçalves, and Ana Filipa Ribeiro.
    • Centro Hospitalar e Universitário de Coimbra, Serviço de Anestesiologia, Coimbra, Portugal. Electronic address: ms.eunice93@gmail.com.
    • Braz J Anesthesiol. 2021 Jun 9.

    AbstractPlatypnea-orthodeoxia syndrome (POS) is a rare condition of positional hypoxemia and dyspnea. The following is a case of hypoxemia for no obvious reason in the perioperative scenario. A 70-year-old male patient was submitted to a radical prostatectomy. On several occasions after anesthetic induction, peripheral oxygen saturation decreased without any understandable cause. In the postanesthesia care unit, severe hypoxemia occurred in the upright position, oddly correcting with recumbency. An echocardiography showed a right-to-left intracardiac shunt through a patent foramen ovale with no pulmonary hypertension, establishing POS. Achieving this diagnosis required a broad workup with a high degree of suspicion.Copyright © 2021 Sociedade Brasileira de Anestesiologia. Published by Elsevier Editora Ltda. All rights reserved.

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