← Return to Dysautonomia/Syncope
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Hello, @maddoxsdad - just wanted to add my welcome to Mayo Clinic Connect. Glad that you are identifying with some symptoms you are reading about in this thread. Glad you finally got a diagnosis that made sense for you and your wife as you sought to determine what was going on with him. Congratulations on being such great advocates for your son.
You might check into the Mayo Clinic Adolescent Autonomic Dysfunction Clinic, if it's of interest https://www.mayoclinic.org/departments-centers/childrens-center/overview/specialty-groups/general-pediatric-adolescent-medicine/autonomic-dysfunction-clinic. There are a couple of interesting videos on that page that also may be of interest.
How is your son doing? How is your daughter?
@maddoxsdad I was reading your post and thinking about what could cause blood pressure changes, that then could be involved in vasovagal syncope. I know there are some physical spine conditions that interfere with blood flow to the brain, and thoracic outlet syndrome can also stop blood flow to the brain by turning the head and compressing vessels which can cause fainting in severe cases. (I have TOS) I found a Physical Therapist in Europe posting about what he finds on MRIs, and writing articles about these types of things that easily can be missed. He posts on facebook as Training and Rehabilitation. He has articles on his website, but recent findings he puts on facebook. Below is one on his recent posts where he talks about posture interfering with jugular vein flow that causes intracranial hypertension and increased cerebrospinal fluid pressure. Vasovagal syncope is also a protective mechanism to lower blood pressure when it gets too high (like from emotional stress). So I am just putting the question out there in case a physical therapy or imaging evaluation could uncover some kind of physical blood flow problem like this that could be an un-diagnosed source of the issues. Thoracic outlet syndrome also tightens the neck and chest and can put pressure on nerves passing through the area and posture plays a big role in that. Forward posture, slouching and a forward head position will make it worse like when a person works at a computer with poor posture. Screen time for kids could be doing something like this and just tightening the front of the chest and neck. Posture and proper alignment of everything is so important to prevent problems. I've had a lot of vasovagal syncope in my life that I've overcome. I am a Mayo spine surgery patient. My story: https://sharing.mayoclinic.org/2019/01/09/using-the-art-of-medicine-to-overcome-fear-of-surgery/
From Training and Rehabilitation:
Can idiopathic intracranial hypertension really be a mere postural problem? An American patient flew over to see me for his gradually increasing problems with confusion, blurry vision, impaired mental clarity, and fatigue.
The patient had several imaging studies done but were reported as normal. Upon examination, however, in the mediosagittal plane, depression of the pituitary gland was evident, as well as distention of the quadrigeminal and cerebellomedullary cisterns, indicative of increased CSF volume and intracranial hypertension.
A common cause of this is blockage of the jugular veins, which is usually visible on a normal capital MRI if one knows how to detect it. However, in this case both veins were perfectly patent and unobstructed. What, then, was causing the ICH?
Upon doppler ultrasonography, in contrast with the seemingly normal appearance on MRI, a low flow volume was demonstrated. Only 180 mL/min on the left side, and 250 on the right side. Normal volumes, especially for a grown man, are about 350mL/min.
Seoane (1999) first stated that cervical extension may obstruct the IJVs. However, craniocervical flexion may also obstruct the vein, as it draws the styloid process into the IJV (Dashti 2012, Larsen 2018c). In this case, we tried both, and what we found was that flow dramatically increased upon craniocervical flexion, and went from a dampened 180mL/min to 600 mL/min! The venous pressure was so high that the waveforms were artery-like, with a pulse, normalizing after a few minutes as the flow volume came down to about 450 mL/min, which is normal for a man 6 foot 3.
This was postural blockage of the internal jugular veins, with secondary intracranial hypertension. This case study is also a good example of why patients should lie with their normal cervical postures (e.g. with a small pillow to recreate the cervical "hinge") during imaging studies.