It was reported that collar separation occurred.A percutaneous coronary intervention-st-elevation myocardial infarction procedure was being performed.The target lesion was located in the mid right coronary artery.A 6f long guidezilla ii catheter guide extension was inserted over a 180cm runthrough wire.The guidezilla was advanced but was met with resistance.A 2.50 x 20 emerge mr balloon catheter was inserted to help advance the guidewire and was partially successful.A 4.0 x 32 synerg xd drug-eluting stent was delivered but was unsuccessful.Subsequently, two 4.0 x 20 synergy xd drug-eluting stents were advanced but failed to deliver due to increased resistance.The guidezilla was removed and the physician noticed that the device was deformed and there was some separation from the collar.The procedure was completed with a non-bsc product.There were no patient complications nor injuries reported.It was further reported that the target lesion was 75-80% stenosed, mildly tortuous, mildly calcified, and with no severe angulation.
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