Thank you for all the information! I have just been confused about all this especially since I am 34 and 175 Pounds and pretty fit, other than having Celiac Disease. Its strange how the body reacts these days, i just dont know, other than believing that our body is a incredible thing and heals in many ways, and the last thing I wnted to do is stress about this. I would love to see some web sites on this. Thanks for all the input and help!
DVK
Morning DVK. Hope your feeling better today! Here's some info for you on different Neurogenic conditions:
Neurogenic Shock:
Neurogenic shock is shock caused by the sudden loss of the sympathetic nervous system signals to the smooth muscle in vessel walls. This can result from severe or sudden central nervous system damage or trauma.
With the sudden loss of background sympathetic stimulation, the vessels suddenly relax resulting in a sudden decrease in peripheral vascular resistance and decreased blood pressure (hypotension).
This type of shock is usually treated with large volumes of fluid to restore normal hemodynamics first. If this fails, treatment would also include Norepinephrine or Atropine or both.
Vasovagal syncope: Now referred to as Neuroregulatory syncope or Common Faint:
Vasovagal Syncope is caused by a sudden decrease in blood pressure, which deprives the brain of sufficient oxygen, temporarily causing dizziness (presyncope) or a brief loss of consciousness (syncope). The Bezold-Jarisch reflex, which is an extreme or overshoot of a normal response to hypotension, is the postulated cause.
Prolonged upright posture results in some degree of pooling of blood in the lower extremities that can lead to diminished intracardiac volume. This phenomenon is accentuated if the individual is dehydrated, as may occur following vigorous exercise, significant sweating, or prolonged restriction of fluid intake. The resultant arterial hypotension is sensed in the carotid body baroreceptors, and afferent fibers from these receptors trigger autonomic signals that increase cardiac rate and contractility.
Reflex-mediated vasomotor instability:
Several stimuli can trigger a reflex-mediated withdrawal of sympathetic tone and increase in vagal tone, leading to neurally mediated (neurogenic) syncope.
Increased intrathoracic pressure due to cough, straining, or another Valsalva maneuver, can limit venous return and increase vagal tone, resulting in decreased CO and syncope. Other causes are strong emotion, pain, fear, or injury can produce strong vagal stimulation, causing vasovagal syncope. An initial increase in BP and heart rate is followed by an abrupt decrease in BP and sometimes heart rate. This form of syncope is common and benign.
Syncope in association with painful stimuli, or dehydration suggests a reflex-mediated mechanism.
I would ask for a tilt table exam, and possibly follow-up cardio exams.
Call me later and I'll give you the websites if you want more info.
Celeste
it is not uncommon for people dry heaving hard to feel faint,
90/40 isnt really all that low.. thats above my normal blood pressure, but everyones body reacts differently to different things.. If you where straining to do the push ups, and dehydrated ontop of that (which it sounds like), it could also account for the second episode..