Chronic intraaneurysmal pressure measurement: an experimental method for evaluating the effectiveness of endovascular aortic aneurysm exclusion
Details
Serval ID
serval:BIB_7E7F5DF24112
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Chronic intraaneurysmal pressure measurement: an experimental method for evaluating the effectiveness of endovascular aortic aneurysm exclusion
Journal
Journal of Vascular Surgery
ISSN
0741-5214 (Print)
Publication state
Published
Issued date
08/1997
Volume
26
Number
2
Pages
222-30
Notes
Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, P.H.S. --- Old month value: Aug
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, P.H.S. --- Old month value: Aug
Abstract
PURPOSE: To evaluate and compare the intraaneurysmal pressure (IAP) after exclusion using two different endovascular grafts. METHODS: Eight mongrel dogs had a 3 x 3 cm polytetrafluoroethylene (PTFE) aneurysm sewn as an interposition graft of the infrarenal aorta. A pressure transducer implanted into the aneurysm wall permitted continuous electronic IAP monitoring. Four aneurysms were excluded with a transluminally placed endovascular graft made of a PTFE graft and two Palmaz stents (PTFE-EG), three were excluded with a tantalum-Dacron endovascular graft (TD-EG), and one was surgically treated with a standard PTFE graft (PTFE-Surg). The dogs were observed for 18 to 50 days (mean, 37.5 days) and were evaluated after surgery with duplex and spiral computed tomographic scans. RESULTS: All grafts successfully excluded the aneurysms without perigraft channels or leaks as documented by arteriogram and duplex and computed tomographic scans. The mean IAPs after repair with all PTFE-EGs were significantly lower (p < 0.001) than the mean systemic pressures. In addition, the mean IAP reduction was significantly greater (p < 0.005) in the PTFE-EG group than in the TD-EG group. CONCLUSIONS: Aneurysm exclusion with PTFE-EG significantly lowered IAP, did so significantly better than the TD-EG, and approached the IAP reduction obtained by standard repair. Such pressure reduction is necessary for effective protection against aneurysm rupture.
Keywords
Animals
Aortic Aneurysm/*physiopathology/radiography/surgery/ultrasonography
*Blood Pressure Determination/instrumentation/methods
Blood Vessel Prosthesis/*methods
Disease Models, Animal
Dogs
Polyethylene Terephthalates
Polytetrafluoroethylene
Tantalum
Tomography, X-Ray Computed
Treatment Outcome
Pubmed
Web of science
Open Access
Yes
Create date
28/01/2008 10:31
Last modification date
20/08/2019 15:39