Elongated Balance Impairment Associated with Recurrent Concussion
These results alone are significant. It means that although athletes did not feel any symptoms (headache, nausea, dizziness, confusion) from the initial injury, they still had deficits in their kinesthetic awareness (ability to balance). The athletes’ brains were still not completely healed from the initial injuries even though the athletes did not feel any symptoms of the MTBI.
Read more at Suite101: Recurrent Concussion in Sports: Rate of Recovery Increases after Successive Concussions http://www.suite101.com/content/recurrent-concussion-in-sports-a125951#ixzz17dTSu3av
Labyrinthine concussion: Vertigo caused by head trauma that dislodges otoconia, leading to unequal loads on the macular beds and imbalance between the two otoliths (1).
Labyrinthine infarction/ischemia: Symptoms are identical to those of vertebrobasilar insufficiency: Patients present with isolated episodes of vertigo of abrupt onset, lasting a few minutes, and associated with no other neurologic signs. They have nystagmus and a Nylen-Barany test that indicates peripheral vertigo. Progression to other signs of vertebrobasilar insufficiency or infarction is common. Patients with history of atherosclerosis should be seen by an otolaryngologist if attacks continue (18).
http://www.medical-library.org/journals4a/dizziness_2.htm
The vestibular system is meant to tell the rest of the nervous system two very important bits of proprioceptive information. Those two bits of information are angular acceleration of the head. In other words, if I were to measure the movements of my head, I would measure them in degrees per second squared. Right? The head goes rightward at so many degrees/second2. That’s angular acceleration around some fulcrum. So part of this system is meant for recording that.
The second part is meant to tell us which way is down. The nervous system needs to know which way is down so it can protect itself in a fall, let’s say, to know where to make the antigravity movements. We need to know which way is down. In other words which way is gravity pulling. So the vestibular system has two subsystems, one of which does each of those two jobs.
The three semicircular ducts are three membranous ducts in your ear. They’re lined up at right angles to each other so that they can report angular acceleration in all three planes, just like an X, Y and a Z plane – a frame of reference.
Traumatic vertigo simply means the person bumped their head, they got a concussion in the labyrinth and they have nystagmus and/or hearing loss. It looks like labyrinthitis or vestibular neuronitis except there’s a history of trauma. This is usually a pretty big league trauma with concussion, loss of consciousness. Not minor trauma. Certainly not just whiplash.
If I were force you to say among the two parts of the word cardiovascular which is more important, cardio or vascular, which is it? 100 to 1 vascular. It’s usually not cardio, it’s usually vascular meaning inappropriate vasodilation or inadequate vasoconstriction in the upright posture usually caused by drugs, toxins and environmental events like high ambient temperature, hyperventilation and excitement combined with the use of drugs that block vasoconstriction like alpha blockers which includes almost all the antidepressants which have the side effects of alpha blockade.
Sometimes it’s cerebellar ataxia with a wide based gait. Sometimes it’s peripheral neuropathy with bad proprioception and Rombergism, worse with the eyes closed. Of course, myelopathy with bad proprioception. It adds up to vitamin B12 deficiency,
Lastly, how do you treat people with vertigo who you can’t treat with the Epley maneuver? That is, the Epley maneuver doesn’t work. Very simple. You have to give them an anticholinergic drug which crosses the blood-brain barrier. This is the central process. We must cross the blood-brain barrier and it must be an anticholinergic. That is, you’ll either give a drug that is meant to be an anticholinergic or you will give a drug which has a side effect which makes it anticholinergic. The most common ones, of course is the use of the over the counter antihistamines which have anticholinergic side effects. Meclizine, diphenhydramine – that’s Dramamine, diphenhydramine – that’s Benadryl or meclizine, that’s Bonine or Antivert. These are all over-the-counter now.
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Feb 2, 2010
… Chemo,
SSRI’s, and many other drugs affect brain chemistry and may
…. a certain set of symptoms – probably
balance, headache, dizziness,
…
brokenbrilliant.wordpress.com/…/the-difference-between-concussion-and-mild-traumatic-brain-injury/ –
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Possible mechanisms of injury include compressive forces, which may directly injure the brain at the point of contact (coup); tensile forces produce injury at the point opposite the injury (contrecoup) because the axons and nerves are stretched; finally, rotational forces may result in a shearing of axons. Therefore, the direct force at the point of contact may not be solely responsible for the severity of an injury if a high rotational component with a significant shear effect occurs.
scrotocycles.rip 