Table 2

Transthoracic impedance and energy requirements according to electrode pad position

   AAAPp Value
Mean energy (J)223 (96.1)232 (110)NS
TTI, first shock (ohm)77.5 (18.4)73.7 (18.7)NS
TTI, final shock (ohm)72.2 (17.1)65.3 (13.0)0.03
Peak current (amp)35.7 (9.3)37.4 (11.7)NS
Number of shocks2.3 (1.1)2.4 (1.2)NS
Cumulative energy (J)432 (314)472 (350)NS
  • AA, anteroanterior; AP, anteroposterior; TTI, transthoracic impedance. Values are mean (SD).