Table 3.
Characteristic | Persistent AF | Paroxysmal AF | Control Subjects | p Value |
---|---|---|---|---|
Atrial signal duration, ms | ||||
Longest CL | ||||
Site of AF initiation | 82 ± 20* | 58 ± 15 | – | 0.01 |
Latest activated site | 73 ± 22 | 59 ± 13 | 66 ± 18 | 0.09 |
Shortest CL | ||||
Site of AF initiation | 63 ± 29 | 69 ± 31 | – | 0.68 |
Latest activated site | 56 ± 13 | 60 ± 22 | 56 ± 14 | 0.57 |
Atrial signal amplitude, mV | ||||
Slowest CL | ||||
Site of AF initiation | 0.69 ± 0.47 | 0.51 ± 0.41 | – | 0.41 |
Latest activated site | 0.55 ± 0.45 | 0.74 ± 0.83 | 0.34 ± 0.31 | 0.22 |
Fastest CL | ||||
Site of AF initiation | 0.46 ± 0.35 | 0.28 ± 0.22 | – | 0.22 |
Latest activated site | 0.51 ± 0.32 | 0.37 ± 0.37 | 0.52 ± 0.25 | 0.34 |
p < 0.05 versus paroxysmal atrial fibrillation (AF).
CL = cycle length (of pacing).