Hello, this is my first time here. I'm looking for any insight and advice anyone has to offer. I having been having tachycardia episodes of 150-170bpm that last hours to days for over a year. Mostly svt. I'm in the er weekly to get them resolved with cardiazem. I pass out a few times a week with no warning. I do not tolerate any oral medication (vomiting and jaudice) and am allergic to beta blockers. The stress this has placed on my heart has caused my ventricles to enlarge. My diagnosis is inappropriatly overactive sa node (the pacemaker). I have been given the option of doing either a sa node ablation or an av node ablation with subsequeny pacemaker inplantation. I would like some advice on the pros and cons of each procedure. I realize that the is advice and your opinion and will treat it as so :> thank you