Table 3

Means of ECG repolarisation features

ECG features
Mean±SD (median)
Overall cohort (n=52)Aborted SCA event (n=16)No event (n=36)
T-wave duration (msec)
 Lead V2213±33 (211)209±32 (204)214±34 (211)
 Lead V5199±46 (194)204±40 (203)197±49 (193)
QT duration (msec)
 Lead V2415±45 (416)411±42 (411)417±47 (417)
 Lead V5430±51 (433)431±51 (417)430±52 (437)
QTc (msec)
 Lead V2420±33 (422)427±29 (425)418±35 (416)
 Lead V5436±41 (436)445±34 (439)432±43 (435)
Tpe Duration (msec)
 Lead V2100±13 (100)99±14 (96)101±13 (100)
 Lead V596±21 (91)96±18 (93)96±22 (91)
Tpe/QT ratio
 Lead V20.24±0.03 (0.24)0.24±0.03 (0.24)0.24±0.04 (0.24)
 Lead V50.22±0.04 (0.22)0.22±0.05 (0.22)0.22±0.04 (0.22)
T-wave Amplitude (mV)
 Lead V20.49±0.29 (0.43)0.34±0.18 (0.32)0.55±0.31 (0.52)
 Lead V50.26±0.24 (0.20)0.20±0.14 (0.18)0.29±0.27 (0.20)
  • Tpe, T peak T end interval; QTc, correct QT interval (Bazetts formula).

  • SCA, sudden cardiac arrest.