alexa Hypoxia and Cyanosis due to Unusual Right-to-Left Shunt
ISSN: 2329-9517

Journal of Cardiovascular Diseases & Diagnosis
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Case Report

Hypoxia and Cyanosis due to Unusual Right-to-Left Shunt in a Patient with an Atrial Septal Defect

Filipa Melao1*, Cristina Cruz1, Rafael Noya2, Joao Carlos Silva1 and Maria Júlia Maciel1
1Serviço de Cardiologia, Centro Hospitalar Sao Joao, Porto, Portugal
2Serviço de Pneumologia, Centro Hospitalar Trás-os-Montes e Alto Douro, Vila Real, Portugal
Corresponding Author : Filipa Melao
Alameda Prof. Hernâni Monteiro
4200 – 319 Porto, Portugal
E-mail: [email protected]
Received: June 29, 2015 Accepted: July 17, 2015 Published: July 20, 2015
Citation: Melao, Cruz C, Noya R, Silva JC, Maciel MJ (2015) Hypoxia and Cyanosis due to Unusual Right-to-Left Shunt in a Patient with an Atrial Septal Defect. J Cardiovasc Dis Diagn 3:209. doi:10.4172/2329-9517.1000209
Copyright: © 2015 Melao F. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Hypoxia due to an Atrial Septal Defect (ASD), without Eisenmenger physiology, is reported rarely and may be underestimated due to difficulty in its diagnosis. We report the case of a 67-year-old woman with chronic cyanosis and hypoxia, in whom a large ASD was diagnosed by cardiac catheterization after an extensive workup to clarify the aetiology of the hypoxia. The right-to-left shunt at the ASD occurred probably due to a well-developed Eustachian valve, partly directing the right atrial flow into the left atrium, in the absence of pulmonary arterial hypertension.


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