Secondary surgical interventions after endovascular stent-grafting of the thoracic aorta.
OBJECTIVE
The objective of the study was to evaluate mid-term durability and need for reinterventions after endovascular stent-grafting (ESG) in descending aortic aneurysms and dissections.


METHODS
Between November 1996 and February 2003 a total of 80 patients underwent ESG for the following indications: atherosclerotic aneurysms (50/80; 63%), type B dissections (20/80; 25%), penetrating ulcers (6/80; 8%), traumatic aneurysms (4/80; 5%). Two types of commercially available ESG (Talent, Medtronic, Santa Rosa, CA and Excluder, WL GORE, Flagstaff, AZ) were inserted via the femoral artery in 53 patients, via the iliac artery in 21 patients and via the abdominal aorta in 6 patients.


RESULTS
In-hospital mortality was 3.8% (n=3). Type I endoleak formation requiring endovascular reintervention was observed in 3.8% (n=3). Surgical reintervention became necessary in 4 patients (4/80; 5%). One patient experienced a retrograde type A dissection, detected in the 3 month control after ESG of an acute type B dissection, consecutively undergoing frozen elephant trunc repair. Three patients with late type I endoleak formation (mean interval: 62 months) after ESG (two atherosclerotic aneurysms, one penetrating ulcer) underwent open thoraco-abdominal repair in deep hypothermia or left heart bypass technique. All patients had an uneventful postoperative course.


CONCLUSIONS
Occurrence of late endoleak formation requiring surgical reintervention after ESG is acceptably low. In atherosclerotic aneurysms the development of endoleaks is assumed to be causative related to progression of the underlying aortic disease. A close follow-up of patients after ESG is crucial.
Grabenwoger
Martin
M
Department of Cardio-Thoracic Surgery, University of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria. martin.grabenwoeger@univie.ac.at
Fleck
Tatjana
T
Ehrlich
Marek
M
Czerny
Martin
M
Hutschala
Doris
D
Schoder
Maria
M
Lammer
Johannes
J
Wolner
Ernst
E
D000368:Aged; D000784:Aortic Dissection / Q000000981:diagnostic imaging / Q000601:surgery*; D017545:Aortic Aneurysm, Thoracic / Q000000981:diagnostic imaging / Q000601:surgery*; D001027:Aortography; D004867:Equipment Design; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D012086:Reoperation; D015607:Stents; D014057:Tomography, X-Ray Computed; D017211:Treatment Failure