Penumbra jet7 distal access catheter placed in the left ica for mechanical thrombectomy of left mca thrombus.One pass with stent-triever device performed in the left mca through the jet7 catheter with limited bloodflow improvement in the left mca.Upon 2nd pass with stent-triever device, a fistula from the internal carotid artery to the venous cavernous sinus was noted on angiographic images.Contrast was noted to not be exiting through the tip of the jet7 catheter on the angiographic images as well.The stent-triever and jet7 devices were retracted simultaneously out of the left internal carotid artery, no tension was noted in the system.Upon removal from the guide catheter the jet7 catheter was noticed to have a kink and fracture near the tip, but the catheter was noted to be complete.Per dr (b)(6), the left internal carotid to venous cavernous sinus fistula was created by the fractured catheter, and the left internal carotid artery was embolized from the cavernous segment down to the cervical segment to close the fistula.Also per dr (b)(6), this did not affect the outcome of the procedure for the patient, as there was patent flow across the anterior communicating artery noted with angiography of the right internal carotid artery.
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