Document Detail


Left ventricular and ascending aortic function after stenting of native coarctation of aorta.
MedLine Citation:
PMID:  20403490     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Patients with surgically corrected aortic coarctation have increased proximal aortic stiffness that might contribute to the known worse cardiovascular outcomes. We examined the effect of stenting on the mid-term ascending aortic elastic properties and its relation to cardiac structure and function in adults with native coarctation of the aorta. A total of 20 consecutive patients (13 men, age at stenting 30 + or - 8 years) were prospectively studied before and 14 + or - 2 months after coarctation stenting. The aortic stiffness index was calculated using the ascending aortic diameters and right arm blood pressure values. The ventricular long-axis function was assessed using pulsed-wave tissue Doppler imaging at the septal site. The results were compared to those from 31 normal controls. Statistically significant improvement was found in aortic narrowing (catheter-derived gradient 32 + or - 11 vs 10 + or - 6 mm Hg), left ventricular mass index (132.8 + or - 50.1 vs 114.7 + or - 47.7 g/m(2)), long-axis function, and left atrial volume index (26.5 + or - 5.3 vs 23.7 + or - 5.6 mm(3)/m(2)). The patients continued to have a thicker left ventricle, reduced long-axis function, and larger left atrium after intervention than did the controls. They also had impaired proximal aortic function with respect to the controls that remained unchanged after stenting (aortic stiffness index 10.7 + or - 4.5 to 10.1 + or - 3.0). The poststenting aortic stiffness index correlated modestly with the left ventricular mass index and reduced long-axis velocity. In conclusion, aortic stenting resulted in partial mid-term improvement in cardiac structure and function in adults with coarctation of aorta but the ascending aortic elastic properties remained abnormal. Such a degree of impairment was related to residual left ventricular hypertrophy and dysfunction. Early identification of such patients and optimum management might avoid these irreversible ventriculoaortic disturbances and their known consequences.
Authors:
Yat-Yin Lam; Michael J Mullen; Mehmet G Kaya; Michael A Gatzoulis; Wei Li; Michael Y Henein
Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2010-03-19
Journal Detail:
Title:  The American journal of cardiology     Volume:  105     ISSN:  1879-1913     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-04-20     Completed Date:  2010-06-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1343-7     Citation Subset:  AIM; IM    
Copyright Information:
Copyright 2010 Elsevier Inc. All rights reserved.
Affiliation:
Division of Cardiology, SH Ho Cardiovascular and Stroke Centre, Department of Medicine and Therapeutics, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong, Special Administrative Region, People's Republic of China. homalam@hotmail.com
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MeSH Terms
Descriptor/Qualifier:
Adult
Aorta / physiology*
Aortic Coarctation / physiopathology,  surgery*
Blood Vessel Prosthesis Implantation / methods*
Echocardiography, Doppler, Pulsed
Female
Follow-Up Studies
Heart Ventricles / physiopathology*,  ultrasonography
Humans
Male
Postoperative Period
Prognosis
Prospective Studies
Stents*
Vascular Resistance / physiology*
Ventricular Function, Left / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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