Fig 1.

Representative traces of sodium currents recorded in adult and pediatric atrial cells. (A) Sodium currents was elicited by 100-ms test pulses in 10 mV increments from a holding potential of -80 mV to potentials between -60 and +40 mV. The I-V relationship curve of sodium currents recorded in pediatric and adult atrial cells (n=10 and 13, respectively) (B). The amplitudes of sodium currents were normalized to cell capacitance and presented as mean values at different test potentials. * represents P<0.05.