Table 2

Comparison of Sites With and Without Isolated Potentials

CharacteristicsIsolated Potential PresentIsolated Potential Absentp Value
No. of evaluated sites269412
Amplitude (mV)0.14 ± 0.250.74 ± 0.77<0.0001
EGM width (ms)199 ± 70130 ± 27<0.0001
S-QRS (ms)108 ± 4381 ± 54<0.0001
Perfect pace-map69/2691/412<0.0001
Good pace-map103/26921/412<0.0001

EGM = electrogram; S-QRS = stimulus-QRS interval.

  • p value assessed by Fisher exact test.