Electrogenic sodium extrusion can stop triggered activity in the canine coronary sinus.

@article{Wit1981ElectrogenicSE,
  title={Electrogenic sodium extrusion can stop triggered activity in the canine coronary sinus.},
  author={Andrew L. Wit and Paul F. Cranefield and David C. Gadsby},
  journal={Circulation research},
  year={1981},
  volume={49 4},
  pages={1029-42}
}
Soon after a burst of triggered activity in the canine coronary sinus begins, an initial fall in maximum diastolic potential and increase in rate gives way to an increase in maximum diastolic potential, reduction in rate, and eventual quiescence. This hyperpolarization, slowing, and subsequent quiescence might result from enhanced electrogenic sodium/potassium extrusion caused by the rise in intracellular sodium concentration ([Na+]i) associated with the high rate of firing. Triggered bursts… CONTINUE READING