I am 30 years old and had a cardiac ablation one year ago for AV Nodal re-entry. I began having tachycardia at age 12, and began having palpitations during my first pregnancy 7 years ago, and arrythmias almost 4 years ago. I am still taking Toprol XL 50mg daily, and my average heart rate is between 90-120 bpm. I would like to get pregnant within the upcoming year and was wondering what the risks are to my heart rate, if I can have a vaginal delivery, and if I would have any limitations during the pregnancy. I have a 6 year old son, and during that pregnancy I had pre-ecclampsia and palpitations, but delievered vaginally with no problems.