What could have made me pass out?

[Etiean]

This was several years ago (more than 5) and it never happened before or since then. but it was weird...last thing i rememberd was standing up during dinner (my parents say I said i felt sick but i dont remember that) and then a burst of color and i was on the floor, fully coherent and wondering why i was on the floor. Seems i fainted.

So I remember my dad helping me up and then i was on the floor again, fully coherent. so i remember being helped into a chair and drinking some water, thinking i was fine cause of the sitting. I said iwas gonna get some rest, and started to get up and then i was on the floor sitll fully coherent. By this time, the paramedics had shown up.I remember them helping me up to bring me to the hospital and then i was on a gurney fully coherent.

It may have happened 4-6 times. since it was winter and the paramedics had their place robbed, their ambulance was cold..they gave me IV fluid after warning me (OW, by the way.) of the cold. I did not pass out again. hung out at the hospital in bed til an iv thing was done, helped up to walk with a nurse holding onto me, and I did not pass out. That was at least 5 years ago, maybe 6. I havent passed out at all since then.

...So..what was that about?! I cant remember a diagnosis. Its bizarre right?!

[caregiver222]

The fact you were provided with an intravenous volume expander suggests simple dehydration, as redstar mentioned. Usually there is a co-factor such as anemia. Rarely is there a disease that prevents the vasculature from compensating when standing up (Parkinson's being such a disease). Since you have had no additional episodes I wouldn't be overly concerned.

[Red_Star]

Orthostatic hypotension (also called postural hypotension) is an excessive decrease in blood pressure that occurs when a person stands up.

Symptoms of orthostatic hypotension include:

Feeling lightheaded or dizzy after standing up
Blurry vision
Weakness
Fainting (syncope)
Confusion
Nausea

The most common cause of orthostatic hypotension is due to dehydration.  eg: fever, vomiting, not drinking enough fluids, severe diarrhea, strenuous exercise with excessive sweating.

Other causes of orthostatic hypotension include prolonged bed rest, excessive amounts of alcohol, certain medications such as diuretics or high blood pressure medications, anaemia, diabetes, adrenal insufficiency, certain nervous system disorders, heart problems, blood loss.