We commonly see this disorder in adults and it is called the tachycardia-bradycardia syndrome. This syndrome is related to fibrosis of the sinus node and electrical conduction system in elderly patients and is treated with a pacemaker and medications to control the tachycardia. With your daughter's previous surgery, her electrical conduction system may certainly have been altered to cause a similar condition. I certainly think you should speak with her pediatric cardiologist about this problem who can then perhaps discuss her case with the electrophysiologist whom you mentioned. I hope you find this information useful.
Information provided in the heart forum is for general purposes only.
Only your physician can provide specific diagnoses and therapies. Please feel free to write back with additional questions. The Heart Center website contains a directory of the cardiology staff that can be used to select the physician best suited to address your cardiac problem. Information contained within this forum is intended solely for general educational purposes and is not intended nor implied to be a substitute for professional medical advice relative to your specific medical condition or question. Only your physician can provide specific diagnoses and therapies.