I've had a cardiac ablation, and was also cardioverted with a heart rate of 220 for over 4 hours. Did your surgeon explain to you that you might have symptoms similar to before the procedure, as there is a healing process involved - it can sometimes be several months. Do you also suffer from anxiety? I've found that the best thing to do is not check your heart rate all the time, it will drive you nuts. Normal resting heart rate is usually between 60-80 bpm. You aren't considered to have tachycardia until your heart rate is over 100. I was told not to worry until my heart rate is over 150 for a 1/2 hour or more. I'm not sure about your other symptoms, but maybe you should contact your surgeon's office to discuss your concerns.