Abstract
Objective: We report recanalization of acute embolic occlusion of internal carotid artery with loop-extraction technique using two microcatheters.
Clinical presentation: A 66-year-old female developed dysarthria and left hemiparesis due to occlusion of the right internal carotid artery at the cavernous portion. Catheter intervention started 70 hours after the onset because of deterioration of the symptom despite anticoagulation therapy. The occluded internal carotid artery was successfully recanalized by the loop-extraction technique after failure of thrombo-aspiration and thrombectomy with a microsnare. The loop-extraction technique was an endovascular thrombectomy using a loop formed by two microcatheters. The loop was made by catching one catheter with a microsnare guided through the other catheter.
Conclusion: The loop-extraction technique is useful for retrieving clots, especially for organized thrombus due to cardiogenic embolism in internal carotid artery. Further experiemce is needed in order to establish the safety and efficacy of this technique.
