Long-term surveillance with computed tomography after endovascular aneurysm repair may not be justified

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Abstract

Abstract Background There is a common perception that a large number of secondary interventions are needed following endovascular aortic aneurysm repair. Methods Prospective data were collected for a cohort of 417 consecutive elective patients undergoing infrarenal aortic endograft repair between April 2000 and May 2008. The rate of secondary interventions, associated morbidity and need for reintervention following surveillance imaging were analysed. Results The male : female ratio was 11 : 1, median age 76 (range 40–93) years and median aneurysm diameter 6·1 (5·3–11) cm. The overall 30-day mortality rate was 1·7 per cent (seven of 417). Secondary interventions were performed in 31 patients (7·4 per cent), of which six (1·4 per cent) were detected by surveillance. Endoleaks requiring reintervention occurred in 12 patients (2·9 per cent; ten type I and two type III endoleaks). Limb ischaemia secondary to graft occlusion occurred in 17 patients (4·1 per cent); extra-anatomical bypass was needed in 15 patients (3·6 per cent) and the remaining two had an amputation. Graft explantation following late infection was required in two patients (0·5 per cent). Conclusion Endoluminal repair of infrarenal aortic aneurysms can be performed with a low reintervention rate. The value of prolonged surveillance seems limited and current surveillance protocols may require revision.

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