Superselective coil embolization in acute renal hemorrhage

Objective:To evaluate the safety and efficiency of superselective microcoil(Cook Medical,Bloomington,IN) embolization in the treatment of acute renal hemorrhage.Methods:Superselective microcoil embolization was performed in 14 patients with acute renal hemorrhage caused by renal artery injury(n=3),congenital polycystic kidney disease(n=3),and renal arteriovenous malformation(n=8).Embolization was performed as peripherally as possible with use of coaxial catheter systems.Median follow-up period was 12.5 months(range 9~14 months).The effect,complication and bleeding recurrence of superselective microcoil embolization in the treatment of acute renal hemorrhage were evaluated.Results:Immediate hemostasis was achieved in all the 14 patients after superselective microcoil embolization.5 patients developed flank pain and 3 patients developed fever.The patients recovered from postembolization symptoms within a week after treatment.No severe complication or bleeding recurrence was observed after intervention.Conclusion:Superselective renal artery embolization is a safe and effective treatment with few complications for acute kidney bleeding.