Table I.
Patients stratified by patency and year of follow-up (N = 20)
| Variable | Month, No. |
||||
|---|---|---|---|---|---|
| 24 | 36 | 48 | 60 | 72 | |
| Primary patencya | 9 | 7 | 6 | 5 | 4 |
| Secondary patencyb | 13 | 10 | 9 | 7 | 5 |
| Lost patency | 4 | 6 | 7 | 8 | 8 |
| Death | 3 | 4 | 4 | 5 | 7 |
a
Functional patency of graft without any intervention to maintain or restore patency; a patient with primary patency was also considered to have secondary patency.
b
Functional patency with or without preceding successful interventional or surgical procedures to maintain or reestablish patency.