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Table 2 Patency rates of vascular grafts

From: The in vivo performance of small-caliber nanofibrous polyurethane vascular grafts

  Week 4 Week 8 Week 12 Week 24
PU group 24 / 24 (100%) 18 / 18 (100%) 11 / 12 (92%) 5 / 6 (83%)
PTFE group 24 / 24 (100%) 16 / 18 (89%) 7 / 12 (58%) 2 / 6 (33%)
  1. Footnote: At any given time point, the patency rate was defined as a ratio between the number of patent grafts and number of dogs alive at that particular time point.