Hello I usually post in the Arthritis forum but ran across your post and thought I would reply...
My grandson was born with WPW. They let his go for 8 1/2 years. Then one day his heart rate jumped into the 300's. Then they decided to do the surgery. He was 8 Years old when he got it. They went through the groin and he was home the next day. And the procedure is exactly what you said. Now he is 10 and has never had a problem since. Hopefully this eases your worries a little.
Diagnosis: Fibro:11/04, RA:3/06, Pleurisy:11/06, Pericarditis:12/06, Myositis on the heart muscle:1/07,all of the above caused from RA. Mitral Valve Prolapse:1/07, Heart Murmur:1/07 said I was born with it. IBS:1992,( Anxiety, Depression, insomnia, Years) Meds: Serax, Prednisone 10mgs, Prilosec, Hydrocodone/acetaminaphen, Norflex, Effexor, Baby aspirin, Enbrel ... /Vitamins: Calcium, Magnesium, Folic acid, Vitamin D, Fish oil