Electricity problem

I am 19/m, with anxiety and pectus excavatum, I have had minor palpatation for a few years but the last month/half they have been happening every day, and since last christmas, sometimes i get rapid hearbeats.  I had tests run and wore a moniter for a month.  The cardiologist said my heart looked fine, but that the moniter reports showed an electricity problem, because it would speed up sometimes, once or more over 150 beats/minute.  He said I could I could 1)take atenolol or 2)have a catheder(spelling?) inserted and microwave the electricity problem, but it wasn't a serious problem.  He also said there is a chance the procedure would not help, and a small chance they would mess up and I would have to wear a pacemaker...which I definately don't want.  I was wondering what the chances were of success and error.  Also, is there anyways the doctors could be mistaken, and the rapid heartbeat just come from anxiety?  I know that is a lot of my troubles.  Also, since I have pectus excavatum, my chest structure is a little off, and the palpatations come very often when I am twisted in a certain position, and when i'm more anxious, so i was wondering if that could be an issue.  Someone also said that if you don't have this done when you catch the problem earlier in life, it can't be done later on.  Sorry for all the questions, but any answers would really help, thanks.

[CCF CARDIO MD JMF]

Dear Cal,

I would suggest an echocardiogram to make sure that you have no associated heart problems.  I would recommend controlling your anxiety and using a medication to control palpitations prior to considering an ablation.