I have syncope issues! cardiologist tells me that even though my electrolytes are good it doesn't mean that i'm getting enough fluid! is this true?

Vagal reflex?: There are many causes of syncope, and one of the most common is a nerve reflex, called a vasovagal reflex, that can suddenly drop the heart rate and blood pressure. This occurs most commonly in the setting of dehydration. Electrolytes can be normal even when one is mildly dehydrated, so drinking more fluids is a reasonable first step. But further work up is needed if episodes continue.