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Extrinsic Outflow Graft Obstruction (EOGO) is a potential complication of durable LVAD therapy characterized by obstructive biodebris accumulation between the outflow graft (OG) and, in the case of HM3, the bend relief (BR). Recent reports have suggested that perforating the HM3 BR may help prevent EOGO. The study objective was to histologically compare the nature and constituency of explanted biologic material from beneath intact HM3 BRs (n=7; with n=3 EOGO) beneath perforated HM3 BRs (n=5), and outside the BR (n=2).

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