Figure 1. Cumulative access patency of AVFs that matured with or without prior interventions and AVGs that did or did not require intervention prior to successful cannulation.

Access patency was shorter for AVF with prior intervention than AVF without interventions (P < 0.0001). Access patency was shorter for AVG with prior interventions than AVG without intervention (P < 0.0001). Access patency was similar for AVF and AVG without prior interventions (P =0.16). Cumulative access patency was worse for AVF with prior interventions than for AVG without prior interventions (P = 0.01). Reproduced with permission from²⁸.