Signs of Orthostatic Hypotension... As one normally rises from a supine (lying position), there is an automatic decrease in blood pressure.(blood pooling in the lower limb veins due to gravity).. Normally, our body naturally senses this imbalance of pressure and responds by extra release of NE Norepinephrine (Kicking in our sympathetic drive) Here, one must look at all the possibilities of this insufficiency. Whether it is a 1) renal problem, 2)endocrine-hormonal issue, 3) thyroid, etc. The dizziness can be explained by the less cardiac output due to pooling of blood in the non-compliant veins= which would mean less saturation of O2 circulating-systemically throughout the body. Remember, the brain demands 02 at all times and this might explain the unconsciousness/dizzy spell. Diabetics tend to have poor circulation and develop peripheral neuropathy (at later stages )and sensing this imbalance can be very troublesome for these individuals. Simply being dehydrated might explain certain acute conditions, but if this is a chronic(ongoing problem) > There can be more problematic pathologies to look into.
