Answer:
Delayed return to resting potential.
Step-by-step explanation:
LQTS (Long QT syndrome) may be defined as the medical condition in which the heart's electrical conductivity gets dis balance. This might occur due to the exercise in case of arrhythmias and quite uncontrollable.
The resting potential of the call is around -70mV. This is maintained by the presence of the potassium ions. In case of LQTS, there is delay in returning to the resting membrane potential of the cell. The cell remains for long in the depolarization phase and may affect the heart's conductivity.
Thus, the answer is delayed return to resting potential.