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
Author(s)
Sanchez  L. A., Faries  P. L., Marin  M. L., Ohki  T., Parsons  R. E., Marty  B., Soeiro  D., Olivieri  S., Veith  F. J.
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
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 9:31
Last modification date
20/08/2019 14:39
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