Hi there,
I had PSVT attacks and the beta blockers the Cardio gave me did not make a difference so I went to see a Cardio Specialist that only works with the Electric part of the heart. They call themselves Electrophysiologist. He did mapping on my heart and then Cardiac Ablation and ablated an extra AV node that was causing the PSVT's. I still get PAC's and PVC's but that is harmless and I don't worry about that to much. I also used to get syncope episodes, before the Ablation.
I would definitely recommend going for Mapping and if needed, Cardiac Ablation - but only done through a very good Electrophysiologist.
I didn't actually "faint". I felt faint many times.
Is it VT or SVT? I think fainting happens in VT.
I don't like to recommend this drug to anyone, but it did work for me. I had SVTs so bad in 2007 that I was feeling dizzy and faint a lot. I was put on Amiodarone for this. There are awful side effects that can develop, so I had to be monitored while taking the drug. There can be adverse effects on the liver and eye sight. The drug worked for me, but after 9 months I decided I didn't want to take the drug anymore. I haven't had any return of the SVT. I could actually feel the missed beat in my wrist. I hope you can get some help and answers soon. Contine to follow up with your doctor. Take care,, Ally