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Microguidewire looping technique for superselective catheterization of the acute angled artery

Objective To assess the clinical value of microguidewire looping technique in superselective catheterization of the acute angled artery. Methods Manipulating the microguide wire into a U shaped loop and simultaneus withdrawal of the microguidewire and microcatheter was performed when the tip of the microguidewire simultaneous got into the target artery and following by slowly and simultaneously withdrawing the microguidewire and microcatheter until the tip of the microguidewire entering into the target artery for a certain length and finally pushed the microcatheter into the target artery slowly. Results Eighteen out of 21 patients with acute angled target artery were successfully catheterized through this approach with technical success rate of 86%, without any complications. Conclusions Microguidewire looping technique is a feasible method for superselective catheterization of the acute angled artery when the routine approach failed.