Hi, many thanks to all of you who have very kindly responded to my questions, after much research I have decided to go along with Jaguars advice and place the electrodes wrist to wrist. I have so far had remarkable results using this method and now truly believe and accept that it is impossible for any electricity to cross over and affect the heart due to the inescapable fact that electricity always follows the path of least resistance.
This method of wrist to wrist absolutely has to be the most effective way of applying current into the bloodstream as Beck himself admitted that most of the benefit was lost when the electricity just takes the path of least resistance and simply travels across the skin to the other electrode.
I was having terrible results using the the 2 electrodes on 1 wrist method and now things have definately changed for the better! I also now firmly believe that it is impossible to cause any heart problems using the 2 wrist method. Many thanks once again.