Endoscopic off-pump aortic valve replacement: does the pericardial cuff improve the sutureless closure of left ventricular access?

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Serval ID
serval:BIB_414BAB52730B
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Endoscopic off-pump aortic valve replacement: does the pericardial cuff improve the sutureless closure of left ventricular access?
Journal
European Journal of Cardio-Thoracic Surgery
Author(s)
Tozzi P., Pawelec-Wojtalic M., Bukowska D., Argitis V., von Segesser L.K.
ISSN
1010-7940
Publication state
Published
Issued date
2007
Peer-reviewed
Oui
Volume
31
Number
1
Pages
22-5
Language
english
Notes
Publication types: Evaluation Studies ; Journal Article - Publication Status: ppublish
Abstract
OBJECTIVE: Off-pump trans left ventricular approach provides more precise deployment of stented aortic valve of any size with respect to the endovascular replacement. One of the key steps of this procedure is the ventricle repair after catheter withdrawing. We designed an animal study to compare the consistency of a sutureless repair of the left ventricle access using nitinol occluder with and without pericardial cuff on the ventricular side. METHODS: Material description: The Amplatz-nitinol occluder consists of two square heads squeezing ventricle wall in between them, sealing the defect. To improve its sealing property, a pericardial patch was sutured to the ventricular head of the occluder. Animal study setup: In adult pigs, a 30F sheath was inserted into the epigastric area through the cardiac apex, up to the left ventricle, simulating the approach for off-pump aortic valve replacement. The sheath was then removed and the ventricle closed with standard occluder in half of the animals, and cuffed occluder in the other half. Animals were followed-up for 3h, collecting haemodynamics data and pericardial bleeding. RESULTS: Device was successfully deployed in 12 animals in less than 1min. In the group where the standard occluder was used, bleeding during the deployment was 80+/-20ml and after the deployment was 800+/-20ml over 3h. In the group where the cuffed occluder was used, bleeding during the deployment was 85+/-20ml and after the deployment was 100+/-5ml over 3h. In the cuffed group, bleeding was significantly lower than the standard group, p-value being <0.001. CONCLUSIONS: The occluder is easy to use and the pericardial cuff dramatically increases its efficacy as demonstrated by a significant reduction of blood loss. The cuffed occluder opens the way for endoscopic, off-pump, transventricular aortic valve replacement.
Keywords
Animals, Aortic Valve, Blood Pressure, Coronary Artery Bypass, Off-Pump, Electrocardiography, Heart Valve Prosthesis, Heart Valve Prosthesis Implantation, Heart Ventricles, Pericardium, Postoperative Hemorrhage, Stents, Sutures, Swine, Thoracoscopy
Pubmed
Web of science
Open Access
Yes
Create date
28/01/2008 10:42
Last modification date
25/09/2019 7:09
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