I figured since acupuncture deals with energy that somehow it can help treat the wrong "electrical firings" in the heart but I have had some mixed answers from these doctors. I remember looking up reviews on this one acupuncture doctor and one review talked about how they were diagnosed with this tachycardia or arrythmia and alternative medicine helped cure it but who knows, it is the internet. :)
Not the answer you're looking for, just an input:
I had acupuncture treatments for about a year and a half for PVC/PAC's and they were not cured, unfortunately. I felt great after my sessions which can help lesson the events, but I continued to have them.
I am doubtful that there is a specific CURE that can just totally erase arrhythmias since the electrical firings can be caused by so many different and multiple reasons. But perhaps you'll get a response which may surprise us.
I emailed some acupuncture doctors and some said they have treated it/had success and only one so far said that it can only make it less frequent. Just thought I'd share this information so others can look into it!