Document Detail


Exercise performance and quality of life is more impaired in Eisenmenger syndrome than in complex cyanotic congenital heart disease with pulmonary stenosis.
MedLine Citation:
PMID:  20439122     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
OBJECTIVE: Patients with cyanotic congenital heart disease without corrective surgery or palliation survive into adulthood, if they have a balanced pulmonary blood flow facilitated by pulmonary stenosis (PS) or Eisenmenger syndrome (ES). Both groups show cyanosis, diminished exercise performance and impaired quality of life. This study aimed to compare the functional outcome of those two cohorts directly.
PATIENTS AND METHODS: In total fifty-eight cyanotic patients with cardiac shunts (28 male, 30 female, aged 14-55years) were investigated, twenty-three of them with PS and thirty-five of them with ES. They completed the health related quality of life questionnaire SF-36 and performed a symptom limited cardiopulmonary exercise test.
RESULTS: At exercise, oxygen saturation decreased severely and similarly in both groups (PS: 90% to 65% vs. ES: 87 % to 64%). Moreover, hemoglobin levels were comparable in both subgroups. Exercise capacity was markedly reduced, but more diminished in ES (PS: 20.3 (11.9;24.6) ml/min/kg vs. ES: 11.3 (9.7;14.5) ml/min/kg; p<0.001) and ventilatory inefficiency expressed as V̇(E)/V̇(CO(2)) slope was more enhanced in ES (PS: 45.7 (37.6;52.9) vs. ES: 54.6 (43.4;68.7); p=0.005). Oxygen saturation at rest was correlated to peak V̇(O(2)) (r=0.436; p=0.001) and V̇(E)/V̇(CO(2)) slope (r=-0.388; p=0.003). Self estimated quality of life was poor, with worse results in physical and psychosocial domains in ES group.
CONCLUSIONS: Despite similar cyanosis, patients with ES show less exercise performance, more ventilation-perfusion-mismatch and a worse quality of life compared to complex cyanotic congenital heart disease patients with PS. Moreover, oxygen saturation at rest predicts exercise capacity and ventilatory efficiency in this cohort.
Authors:
Jan Müller; John Hess; Alfred Hager
Publication Detail:
Type:  Journal Article     Date:  2010-05-01
Journal Detail:
Title:  International journal of cardiology     Volume:  150     ISSN:  1874-1754     ISO Abbreviation:  Int. J. Cardiol.     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-07-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8200291     Medline TA:  Int J Cardiol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  177-81     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ireland Ltd. All rights reserved.
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