Vasovagal Syncope is the disorder behind common fainting. The underlying reaction can be triggered by a number of things. An individual known to faint at the sight of blood, in high stress situations, or during public speaking is suffering from Vasovagal syncope. The name Vasovagal comes from the vagnus nerve enveloped in the muscle tissue of the throat. This small but very important nerve controls an individual’s heartbeat and an array of other nerves useful in the body called parasympathetic nerves which are responsible for involuntary actions of the body.
When an individual is triggered, whether by blood, stress, or any other trigger, the vagnus nerve is stimulated. This decreases the heart rate and in turn blood pressure. These two reactions limit the amount of oxygen moving through the blood stream and causes a person to faint. Once the individual has lost consciousness the trigger is removed and the automatic nervous system takes over regular functions and begins supplying the body with enough oxygen. Rarely does this system suffer a time lag, but when one occurs the result is cardiac arrest.
The symptoms associated with this disorder are those associated with fainting for any other reason. First you will become a little lightheaded and nauseous, followed by the lightening of skin tone, hot or cold sweats, and disorientation. Dizziness and yellowing or darkening of vision are the final symptoms before collapsing and losing consciousness. In some instances all the patient will see if black while still fighting unconsciousness.
Fainting can occur for many reasons. It is important to not shrug off any fainting spell as harmless Vasovagal syncope. This disorder is not dangerous in itself but is commonly misdiagnosed to mask other more serious medical problems. The biggest danger associated with Vasovagal syncope is the fainting itself. From great heights or on hard surfaces this can be extremely dangerous. If any of the symptoms arise be sure to get as low to the ground as you can. Lie down or sit with your heads between your knees. This may eliminate the trigger and as such the symptoms but at the very least it will greatly reduce any bodily harm you may experience from fainting.
There is currently a study going on to determine effectiveness of treatment for Vasovagal syncope. The study is being conducted by the University of Calgary and they are testing the drug fludrocortisone. The study began recruiting January 25th, 2010 and once all candidates are recruited the study will last 12 months. The study will determine how effective this drug is in preventing the occurrences of Vasovagal syncope or its ability to lesson the episodes. Candidates for the study are currently being taken from Canada and the United States. To become a member of this study, or to follow it, you can visit The Government Site for Clinical Trials .
Information found on:
The Government Site for Clinical Trials .