Document Detail

A new self-expandable aortic valved stent deployed above native leaflets for aortic insufficiency: an in vitro study.
MedLine Citation:
PMID:  23138598     Owner:  NLM     Status:  Publisher    
AIM: The aim of this paper was to develop a new self-expandable aortic valved stent following the shape of the sinus of Valsalva, which can be deployed above native leaflets for aortic regurgitation, and study it's effect on coronary artery flow when orthotopic implantation in and above native leaflets. METHODS: New self-expandable aortic valved stent consist of nitinol stent and bovine pericardium, and was designed following the shape of the sinus of Valsalva, the bovine pericardium was tailed as native leaflet. Thirty-six swine hearts were divided into three equal groups of twelve. In Group A (N.=12), the new self-expandable aortic valved stents deployed in native leaflets. In Group B (N.=12), the new self-expandable aortic valved stents deployed above native leaflets. In Group C (N.=12), the cylinder-like valved stents deployed only in native leaflets. The measurements of each coronary flow rate and endoscopic inspections were repeated post-implantation. RESULTS: In Group A and C, valve implantation in native leaflets resulted in a significant decrease in both left and right coronary flows. In Group B, no significant change in either right or left coronary flow was found after new self-expandable aortic valved stent placement. Endoscopic inspections showed that in group A and C the native leaflets sandwiched between valved stent and aortic wall, whereas, in group B the native leaflets were under the artificial leaflets. CONCLUSION:Two kinds of stents deployed in native leaflets affect left and right coronary flows significantly. No significant effect was found when the new self-expandable aortic valved stent deployed above native leaflets. This new self-expandable aortic valved stent can be deployed above the native leaflets, which avoids the obstruction of native leaflets on coronary flow.
H Huang; Y Zhou; J Shao; J Cai; Y Mei; Y Wang
Related Documents :
1854498 - An acquired interatrial fistula secondary to para-aortic abscess documented by transeso...
7739248 - Axillary artery: an alternative site of arterial cannulation for patients with extensiv...
9972908 - Acquired aortopulmonary fistula. a case report.
2248178 - Clinical evaluation of high-frequency (ultrasonic) mechanical débridement in the surgic...
19265048 - Atherosclerotic plaque surface morphology in the carotid bifurcation assessed with mult...
9351308 - Mycotic pseudo-aneurysm of the extracranial carotid artery.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-08
Journal Detail:
Title:  The Journal of cardiovascular surgery     Volume:  -     ISSN:  0021-9509     ISO Abbreviation:  J Cardiovasc Surg (Torino)     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0066127     Medline TA:  J Cardiovasc Surg (Torino)     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Thoracic-Cardiovascular Surgery, Tongji Hospital, Tongji University School of Medicine, Shanghai, China -
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

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

Previous Document:  Surgical Management of Colorectal Peritoneal Metastases: Treatment and Outcomes Compared with Hepati...
Next Document:  Novel chimney-graft technique for preserving hypogastric flow in complex aortoiliac aneurysms.