| Effects of postural change on oxygen saturation and respiration in patients after the Fontan operation: platypnea and orthodeoxia. | |
MedLine Citation:
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PMID: 16321694 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The aim of this study was to assess whether platypnea and orthodeoxia occur in Fontan patients. We divided 14 Fontan patients into 2 groups: 8 patients who had pulmonary arteriovenous fistulas and/or intra-atrial shunts (group A) and 6 patients who had neither pulmonary arteriovenous fistulas nor intra-atrial shunts (group B). They were compared with 9 controls (group C). Arterial oxygen saturation, minute ventilation per body weight and ventilatory equivalent for carbon dioxide were measured in the supine and then sitting positions. In group A, 1 patient had platypnea and 3 patients had orthodeoxia (changes in the saturation from the supine position to the sitting position were -4% to -7%) accompanied with slight hyperpnea, and all 4 patients had both pulmonary arteriovenous fistulas and intra-atrial shunts. Contrary, patients in group B had neither platypnea nor orthodeoxia. The saturation was significantly lower and the minute ventilation was significantly higher in the sitting position than in the supine position in group A (p < 0.05). The other groups showed no significant difference in the saturation or the minute ventilation between the 2 positions. All groups showed the ventilatory equivalent was significantly higher in the sitting position than in the supine position (p < 0.05 to 0.01). We demonstrated platypnea and orthodeoxia in Fontan patients with pulmonary arteriovenous fistulas and intra-atrial shunts. We believe platypnea and orthodeoxia should be regard as a complication in Fontan patients with pulmonary arteriovenous fistulas and/or intra-atrial shunts. |
Authors:
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Hiroshi Suzuki; Hideo Ohuchi; Yoshimi Hiraumi; Kenji Yasuda; Shigeyuki Echigo |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: International journal of cardiology Volume: 106 ISSN: 0167-5273 ISO Abbreviation: Int. J. Cardiol. Publication Date: 2006 Jan |
Date Detail:
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Created Date: 2005-12-02 Completed Date: 2006-03-16 Revised Date: 2006-07-12 |
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: 211-7 Citation Subset: IM |
Affiliation:
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Department of Pediatrics, National Cardiovascular Center, Suita, Osaka, Japan. hsuzukc562@hotmail.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Arteriovenous Fistula / congenital, physiopathology, surgery*, ultrasonography Case-Control Studies Child Dyspnea / physiopathology Echocardiography Exercise Test Female Fontan Procedure* Heart Catheterization Heart Septal Defects, Atrial / physiopathology, surgery*, ultrasonography Humans Male Oximetry Oxygen / metabolism* Posture* Pronation Pulmonary Artery / abnormalities Pulmonary Gas Exchange Pulmonary Veins / abnormalities Respiratory Function Tests Statistics, Nonparametric Supination |
| Chemical | |
Reg. No./Substance:
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7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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