Comparison of the torpedo and fragmentation methods in partial splenic embolization (PSE)

Abstract

Background: Various embolic materials and techniques are used in partial splenic embolization (PSE), with procedural approaches differing among institutions. At our hospital, the torpedo method was introduced as an alternative to the conventional fragmentation method in September 2021. However, the clinical impact of the torpedo method remains unclear.

Objective: To compare perioperative outcomes between the torpedo and fragmentation methods for PSE.

Methods: Eighteen patients who underwent PSE at our institution were retrospectively analyzed (torpedo group: 11 patients; fragmentation group: 7 patients). Operative time and perioperative laboratory parameters were compared between the groups.

Results: The torpedo method was associated with a trend toward shorter operative time compared to the fragmentation method. On postoperative day 1, there were no significant differences in peripheral white blood cell (WBC) count or serum C-reactive protein (CRP) levels between the groups. However, CRP levels on postoperative day 7 were significantly higher in the torpedo group, although no differences were observed in the incidence of fever or pain.

Discussion: The torpedo method allows for embolization at a relatively proximal location, which may contribute to reduced procedural time.

Conclusion: The torpedo method may be a useful technique for shortening operative time in PSE without increasing perioperative complications.