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Updated: Jul 13, 2026

Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm
Published on: August 1, 2025
Occlusion of iatrogenic pseudoaneurysms with percutaneous ultrasound guided thrombin injection
G Freund1, D Dürschmied, Q Zhou
1Department of Cardiology/Angiology, University Clinics of Freiburg, Germany. freund@medizin.ukl.uni-freiburg.de
Background:
Pseudoaneurysm is a common complication of cardiac catheterization and coronary intervention with an incidence of 2% even in experienced centers.
Patients And Methods:
In a feasibility study conducted between December 2004 and February 2006 we enrolled 76 patients consecutively to receive local thrombin injection (mean 329 IU; range 100-800 IU) into the aneurysma sac.
Results:
Ultrasound guided thrombotic occlusion of pseudoaneurysms was successful after one injection in 83% of the patients, 17% of the patients required more than one injection. The overall success rate of the procedure was 98,9%. No peripheral embolisation of thrombin was noted during any injection and we registered no other complication that needed any further intervention.
Conclusions:
We conclude that ultrasound guided occlusion of pseudoaneurysms using thrombin injection with a success rate of the procedure of 98,9% is feasible and safe.
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