Analysis of interventional embolization in treatment of iatrogenic renal injury hemorrhage

Objective To investigate the effect of interventional embolization in the treatment of traumatic hemorrhage in iatrogenic renal.Methods Twelve patients with hemorrhage in iatrogenic renal(renal biopsy of 3 cases,renal stones lithotomy 4 cases and percutaneous nephrolithotomy 5 cases) were retrospectively analyzed.Super selective catheterization to the bleeding site and embolization with gelfoam and / or steel coils or microcoils were carried out after renal artery angiography in this study.Results Renal hemorrhage located at the segmental renal artery of 4 cases and following segmental artery of 8 cases.Renal arterial angiogram revealed pseudoaneurysms in 4 cases,arteriovenous fistula 3 cases and contrast agent extravasation 5 cases.Of the 12 cases,5 were treated with gelfoam,6 with coils and 1 with gelfoam combined coils.The naked eye hematuria disappeared after procedure in 11 patients within 4 days.1 patient received re-embolization for postoperative rebleeding 3 days later and achieved a good clinical effect.None of the patients had recurrence and complications during follow-up(range,3 ~ 12months).Conclusions Interventional embolization in the treatment of iatrogenic renal hemorrhage is a small-wounded,rapid,safe,effective method to stop bleeding,and can maximize the protection of renal function.