30% and for the SFA-tFV fistulas was 79%, the difference was statistically significant
by Log Rank testing (p = .0001). The one year cumulative secondary
patency was 71% for the HeRO grafts and 93% for the SFA-tFV fistulas, also a
statistically significant difference (p = .03). The HeRO graft patients required
an average of 2.1 interventions per year to maintain patency. The thigh fistulas
required an average of 0.4 interventions per year to maintain patency.
37 out of 58 patients experienced a complication. There were significant differences
between the groups in patterns of complications. 37% of the tFV
patients had a hematoma or seroma compared with 5% of the HeRO graft
patients and 17% of the tFV patients experienced delayed wound healing
compared with 2.5% of the HeRO graft patients. (p<.05). None of the tFV
patients had distal ischemia.