Literature citation: krol, emilia, brandt, colin t., blakeslee-carter, juliet, ahanchi, sadie s., dexter, david j., karakla, daniel, and panneton, jean m.2019 vascular interventions in head and neck cancer patients as a marker of poor survival.Journal of vascular surgery 69:181-189 this report addresses potential, but unconfirmed, instances of loss of patency with the propaten vascular graft.The viabahn patency data is being reported separately.
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The following information was reported to gore: in an abstract titled "vascular interventions in head and neck cancer patients as a marker of poor survival", it states a retrospective review of cancer patients treated by head and neck surgery and vascular surgery between 2007 and 2015 was conducted.Twenty-two patients had stents placed during index procedures.Gore® viabahn® endoprostheses were utilized in eight patients.Additionally, eight bypass procedures were performed, seven had vein grafts.One bypass patient had a gore® propaten® vascular graft, for recurrent carotid stenosis from radiation arteritis.The primary patency rates for both bypass and stents were analyzed.The mean patency rate for patency with bypass was 16.6 months (range, 1 day to 23 months) compared with 29.8 months (range 3 days to 55 months) for patients treated with stents.Primary patency at 1 year was 71% and 66% for bypass and stent patients respectively.There was no difference between the primary patency for the two groups (p=.604).
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