Hi ChefSpice, Welcome to Healing Well forum we are glad to have you also.
What your doctor may be talking about is the electrophysiology of your heart? This would be like abnormal heart rates...specifically, bradycardia which is slow heart arrhythmias or tachycardia which is rapid heart arrhythmia's. Then there are PVT's and PSVT's but the bottom line is that they have special doctors that study the electrophysiology of the heart, they are usually called EP specialists or docs. They are able to do more in-depth diagnosing of abnormal heart rhythms.
I hope some of our other members are able to give you some assistance here...Please do keep posting, take care