Low BP

Neurally Mediated Hypotension

Hypotension is referred to low blood pressure. Neurally mediated hypotension is a complication that occurs due to unnatural reflex action between the brain and heart, though they are structurally normal. Neurally mediated hypotension is also called fainting reflex, or vasodepressor syncope or neurocardiogenic syncope or autonomic dysfunction or vaso-vagal reflex. Syncope is the formal medical term used for fainting.

The complication occurs in a susceptible individual under the following grounds

* If he or she remains in long upright postures like standing in a que, or   sitting straight
* Remaining in warm environment like hot summer, in a hot shower or   bath
* The attack may be prone immediately after one exercises
* If a person undergoes emotional stressful events
* Even there are cases of individuals getting the symptoms immediately after having meals. This happens due to the flow of blood being shifted to the intestinal circulation.

The susceptibility of a person also depends on his or her genetic factor, dietary habits,  acute triggering factors like allergy or infection, psychological make up etc.

The very common symptoms of neurally mediated hypotension are light headedness or  fainting. Chronic fatigue, headaches, muscle aches or fibromyalgia, mental confusions etc are some other significant symptoms of this kind of hypotension. With the help of routine or regular heart rate screening or blood pressure tests its difficult to detect  Neurally mediated hypotension. Generally the tests are carried out with a more common test called 'tilt table test.'  

Medication for NHM:
The ailment is treated with a combination of increased amount of water intake and salt. Along with this approach there are certain drugs that regulate the lowering of blood pressure. There are certain drugs that allow the kidneys to retain sodium, while others  block the body's response to adrenaline that is most often responsible for blood pressure abnormality. Again it must be ensured that the medicines do not contain vitamins or drugs that may make the condition of hypotension worse. Some of the medicines that have been found to treat the condition of NHM are- fludrocortisone (Florinef),  disopyramide (Norpace), beta-blockers (e.g., atenolol),  sertraline (Zoloft), ephedrine, fluoxetine (Prozac),  theophylline, pseudoephedrine, midodrine. and methylphenidate (Ritalin).