Hi Jerry,
he told me the running was great, to load salt, drink more fluids and said the cardiologist would likely recommend meds and or pacemaker. I don't ever get dizzy while running so I'm not concerned about that. He was impressed that when I did the stress tests I finished both of them (15min). I was exhausted mind you since they push you to maximum HR but I finished them. The last one they had me immediately stop so they could image my heart (I had to lie on a table right away) -- that made me dizzy since I couldn't cool down and keep moving. They said my heart was in great shape..just the synscope problem..
You mention failing the tilt test. What did your doctor say about that failure?
While dehydration can cause heart rhythm problems, I'd not guess that is a "fix" for dizziness.
I'd talk with the doctor more before taking on any strenuous running exercises.