[ Home | Contents | Search | Post | Reply | Next | Previous | Up ]
Symptoms are addressed rather than diagnosis on this forum because tests are required for diagnosis. These tests can only be provided by M.Ds, and not done over the internet.
You are correct that the heart is involved. The vagus nerve triggers the heart rate to slow and the veins and arteries to dilate, lowering blood pressure.
My theory is that athletic people are affected more than sedentary people because they have more highly developed vascular systems. When the veins and arteries dilate (open) the cause a greater drop in blood pressure than in sedentary people, resulting in increased dizzynes and sometimes loss of consciousness.
Your theory is that people with V-V have carotid artery (or some other artery) blockage. If this were true, one would not expect younger people to have this problem, and that the frequency would increase significantly with age. Usually it seems to decrease with age, at least from the early years into mid-adulthood.