To investigate the clinical efficacy and safety of superselective parent artery embolization in the treatment of ruptured-abdominal pseudoaneurysm on branched artery.

The clinical data of patients with ruptured-abdominal pseudoaneurysm on branched artery treated by superselective parent artery embolization from February 2017 to June 2020 were retrospectively analyzed. The hemostatic effect and complications were analyzed, and the clinical experience was summarized.

All the21 patients received superselective parent artery embolization with micro-coils. Among them, 10 patients were embolized with gelfoam particles additionally for consolidated embolization. 18 patients were embolized at the proximal part of the parent artery and 3 patients were treated with "sandwich" embolization technique. The technical success rate was 100% (21/21). The clinical success rate of primary embolization was 81.0% (17/21), and the overall clinical success rate after secondary embolization was 85.7% (18/21). Transient mild abdominal pain was observed in 4 patients and partial splenic infarction occurred in 1 patient after embolization. All the sympotoms relieved after treatment.

Superselective parent artery embolization is of high success rate and easy to repeat. It is an alternative treatment for ruptured-abdominal pseudoaneurysm on branched artery. Reasonable selection of embolic materials can achieve better hemostasis effect and reduce the incidence of complications.