Finnish multicenter study on the midterm results of use of the Zenith stent-graft in the treatment of an abdominal aortic aneurysm.
OBJECTIVE
To assess the midterm results of endovascular repair of abdominal aneurysm (AAA) with a Zenith stent-graft.


METHODS
Between January 2001 and December 2005, a Zenith stent-graft was employed for endovascular repair of an infrarenal AAA in 206 patients. The mean patient age (+/-standard deviation) was 73.2 years +/- 7.3. Bifurcated grafts were used in 196 patients (96.1%), aortouni-iliac grafts were used in seven patients (3.4%), and a tubular graft was used in one patient (0.5%). The mean follow-up period was 2.4 years +/- 1.7.


RESULTS
The 30-day mortality rate was 2.9%. The overall survival rates at 1-, 3-, and 5-year follow-up were 93.3%, 78.7%, and 64.5%, respectively. None of the patients died of AAA rupture. The primary and assisted technical success rates 1 week after endovascular aneurysm repair were 82.0% and 90.3%. The primary clinical success rates at the 1-, 3-, and 5-year follow-up were 90.6%, 85.6%, and 83.5%. Twenty-seven patients (13.1%) underwent a secondary intervention during the study period.


CONCLUSIONS
An 83% rate of freedom from repeat vascular intervention over a period of 5 years as well as an absence of structural failures or aneurysm ruptures demonstrates that a Zenith stent-graft is associated with good midterm results.
Nevala
Terhi
T
Department of Radiology, Oulu University Hospital, Oulu, Finland. Terhi.Nevala@ppshp.fi
Biancari
Fausto
F
Manninen
Hannu
H
Aho
Pekka-Sakari
PS
Matsi
Pekka
P
Mäkinen
Kimmo
K
Roth
Wolf-Dieter
WD
Ylönen
Kari
K
Lepäntalo
Mauri
M
Perälä
Jukka
J
D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000401:mortality* / Q000628:therapy*; D001807:Blood Vessel Prosthesis / Q000706:statistics & numerical data*; D005260:Female; D005387:Finland / Q000453:epidemiology; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D018570:Risk Assessment / Q000379:methods*; D012307:Risk Factors; D015607:Stents / Q000706:statistics & numerical data*; D016019:Survival Analysis; D015996:Survival Rate; D016896:Treatment Outcome