Abstract
Internal iliac artery (IIA) embolisation is commonly performed prior to endovascular aneurysm repair (EVAR) of aortoiliac aneurysms to prevent type 2 endoleaks via the internal iliac arteries. The safety of this procedure is controversial due to the high incidence of pelvic ischaemic complications. We undertook a retrospective review of all patients undergoing IIA embolisation before EVAR from 2002 to 2012, to determine incidence of, and factors associated with pelvic ischaemia. Eight of 25 patients (32%) experienced new-onset ischaemia, including erectile dysfunction (4%), and buttock claudication (28%) that persisted >6months in only four patients (16%). Both bilateral IIA embolisation and a shorter time interval to EVAR correlate with increased risk (p=0.006 and p=0.044). No co-morbidities or demographic factors were predictive. We conclude that IIA embolisation remains a beneficial procedure, however, to minimise the risk of buttock claudication we advise against both bilateral IIA embolisation and short time intervals between embolisation and subsequent EVAR.
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