Radiology
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Therasse, E.
Right arrow Articles by Soulez, G.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Therasse, E.
Right arrow Articles by Soulez, G.
(Radiology. 2001;219:655-662.)
© RSNA, 2001

Vascular and Interventional Radiology

Infrarenal Aortic Stenosis: Value of Stent Placement after Percutaneous Transluminal Angioplasty Failure1

Eric Therasse, MD, Gary Côté, MD, Vincent L. Oliva, MD, Jean R. Cusson, MD, Robert Wistaff, MD, Paul V. Nguyen, MD, Bao T. Bui, MD, Pierre Perreault, MD, Louis Lamarre, MD and Gilles Soulez, MD

1 From the Depts of Radiology (E.T., V.L.O., B.T.B., P.P., G.S.), Internal Medicine (J.R.C., R.W., P.V.N.), and Pathology (L.L.), Centre Hospitalier de l’Université de Montréal (CHUM), 3840 St Urbain St, Montreal, Quebec, Canada H2W 1T8, and the Dept of Radiology, Hôpital du Saint-Sacrement, Quebec City, Quebec, Canada (G.C.). Received Nov 30, 1999; revision requested Jan 14, 2000; final revision received Nov 28; accepted Dec 19. Address correspondence to E.T. (e-mail: eric.therasse.chum@ssss.gouv.qc.ca).

PURPOSE: To evaluate the long-term clinical and hemodynamic effectiveness of aortic stent placement in cases of failure of intended infrarenal percutaneous transluminal aortic angioplasty (PTAA).

MATERIALS AND METHODS: Fifty-three patients who underwent technically successful PTAA were compared with 24 patients who underwent aortic stent placement because of PTAA failure (19 patients) or ulcerated lesions (five patients) that otherwise would have been treated surgically because of the embolization hazard associated with PTAA alone. Clinical patency was defined as the absence or improvement of symptoms after the intervention. Hemodynamic patency was defined as a normal Doppler waveform in the common femoral arteries, an ankle-brachial index greater than 0.95, or the absence of a thigh-brachial pressure gradient.

RESULTS: Three-year clinical and hemodynamic patency rates, respectively, were 85% and 79% for PTAA and 69% and 43% for aortic stent placement. No morbidity was encountered. With use of the Cox proportional hazards model, two significant risk factors were retained for restenosis: unchanged smoking habit (P = .04) and small dilatation diameter (P = .001). Aortic stent placement, performed in patients with a smaller aortic diameter (10.3 vs 12.7 mm for PTAA), appeared to be a predictive factor for restenosis by using univariate analysis. By using the Cox proportional hazards model, however, the restenosis rates after PTAA and aortic stent placement were not significantly different.

CONCLUSION: When aortic diameter is taken into consideration, there is no evidence that clinical outcome after secondary aortic stent placement would be poorer than technically successful PTAA.

Index terms: Aorta, arteriosclerosis, 981.721 • Aorta, grafts and prostheses, 981.1268 • Aorta, interventional procedures, 981.1282 • Aorta, stenosis or obstruction, 981.721






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
RADIOLOGY RADIOGRAPHICS RSNA JOURNALS ONLINE
Copyright © 2001 by the Radiological Society of North America.