Is there a difference between Ca++ and Ca(2+)? In this EKG tutorial it says


  Depolarization conducts slowly through the AV node, since it is carried by slow moving $\ce{Ca++}$ ions...


Is there a difference between $\ce{Ca++}$ and $\ce{Ca}^{2+}$?
The answer to this question is: No. There is no difference between the two, they are merely two different notations.