| Gas exchange detection of right-to-left shunt in dyspneic patients: report of three cases. | |
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MedLine Citation:
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PMID: 16516706 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We evaluated three patients with undiagnosed complaints of progressive dyspnea. Based on gas-exchange findings as the initial diagnostic tool, the high ventilatory equivalents for CO2, low sustained end-tidal PCO2, hypoxemia, and central cardiovascular dysfunction during cardiopulmonary exercise testing (CPET) suggested that each had significant pulmonary vasculopathy with right-to-left shunting. The diagnoses of Osler-Rendu-Weber syndrome, ventricular septal defect with Eisenmenger's complex, and hepatopulmonary syndrome were later confirmed by pulmonary angiography, cardiac catheterization, and contrast enhanced echocardiography respectively. We suggest that CPET is an appropriate noninvasive tool to begin and guide the evaluation of undiagnosed dyspnea. |
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Authors:
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Ming-Lung Chuang; Heng-Chia Chang; Kun-Eng Lim; Janine R E Vintch |
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Publication Detail:
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Type: Case Reports; Letter; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: International journal of cardiology Volume: 108 ISSN: 0167-5273 ISO Abbreviation: Int. J. Cardiol. Publication Date: 2006 Mar |
Date Detail:
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Created Date: 2006-03-06 Completed Date: 2006-08-10 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8200291 Medline TA: Int J Cardiol Country: Ireland |
Other Details:
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Languages: eng Pagination: 117-9 Citation Subset: IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Arteriovenous Malformations / complications, diagnosis Dyspnea / etiology*, physiopathology Echocardiography Eisenmenger Complex / complications, diagnosis*, physiopathology Exercise Test Heart Septal Defects, Ventricular / complications, diagnosis*, physiopathology Hepatopulmonary Syndrome / complications, diagnosis*, physiopathology Humans Male Middle Aged Pulmonary Artery / abnormalities Pulmonary Gas Exchange* Pulmonary Veins / abnormalities Telangiectasia, Hereditary Hemorrhagic / complications, diagnosis*, physiopathology |
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