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1.2k views

Why is the median SNAP normal in thoracic outlet syndrome?

I am not sure why the median SNAP is normal in TOS, but the medial CMAP is abnormal.

Aug 20 '10 at 09:41 NeuroGirl46
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427 views

Best way to differentiate a satellite potential and a nascent MUAP on EMG

Both signify a neurogenic process (early reinnervation). What is the best way to differentiate the two on EMG? Also, I read that a satellite potential is "time locked" which does not make sense to me since these are unstable potentials ...

Aug 19 '10 at 14:23 NeuroGirl46
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511 views

Vitamin D deficiency and neuropathy

I have never read any articles or books that state vitamin d deficiency could be an etiology of peripheral neuropathy. I have heard some physicians suggest this could be an etiology. Is there any data to suggest that this could ...

Aug 18 '10 at 15:56 laminin1
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676 views

Why do you NOT see an increase in duration with a conduction block?

My understanding is that there is a decrease in amplitude AND area in conduction block, but why is there not supposed to be an increase in duration as well?

Aug 18 '10 at 07:48 ranjithpolusani1
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1.3k views

What is the mechanism of action of acetazolamide in channelopathies?

Acetazolamide has been recommended for channelopathies such as hypo and hyperkalemic periodic paralysis, but what is the MOA?

Aug 17 '10 at 16:28 NeuroGirl46
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716 views

Multiple sclerosis

What is the role of MRI spine in prognostication of 'Clinically Isolated syndrome'?MRI brain if abnormal would suggest 85% chance of Multiple sclerosis.

Aug 17 '10 at 15:50 NeuroGirl46
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626 views

Checking IgA levels

Some people routinely check IgA levels prior to giving IVIG. Others think this is outdated. Can anyone post about their experience? Has anyone caught IgA deficiency doing routine IgA levels? Shouldn't screening questions for IgA deficiency be enough?

Aug 17 '10 at 15:17 NeuroGirl46
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383 views

What is more sensitive in detecting axonal loss--fibrillation potentials or decreased recruitement--and why?

I have read that both are seen very early in axonal loss, but there have been conflicting statements as to which one is a more sensitive indicator for axonal loss.

Aug 17 '10 at 15:07 NeuroGirl46
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1.2k views

Why do oral steroids worsen optic neuritis?

We know that IV steroids hasten recovery, but why would oral steroids actually worsen the natural course?

Aug 16 '10 at 06:41 ranjithpolusani1
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828 views

Why do you treat adrenoleukodystrophy with Lorenzo's oil?

Adrenoleukodystrophy is caused by defective oxidation of VLCFAs and the treatment is to give fatty acids (lorenzo's oil) -- why wouldn't giving this exacerbate the disease? I would think the patient would not be able to break down those fatty ...

Aug 16 '10 at 06:39 ranjithpolusani1
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1.0k views

Does frontotemporal dementia with parkinsonism respond to Sinemet

Often times, frontotemporal dementia is associated with parkinsonism features such as bradykinesia and rest tremor. I wonder whether these symptoms respond to Sinemet, like a typical Parkinson's disease. Or it is more similar to atypical parkinsonism, which would not respond ...

Jul 25 '10 at 08:48 NeuroGirl46
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845 views

Why are cholinesterase inhibitors not effective in patients with Musk positive Myasthenia Gravis?

I also read that cholinesterase inhibitors may actually worsen symptoms in Musk positive patients??

Jul 15 '10 at 08:45 sghael ♦♦1
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430 views

Why does giving a calcium channel blocker work in familial hemiplegic migraine but giving a sodium channel blocker for Dravet's syndrome contraindicated?

My understanding is that familial hemiplegic migraine involves the mutation of the P/Q type calcium channel, so giving a calcium channel blocker such as diltiazem has been proposed to work. But Dravet's syndrome involves the mutation of the Na channel, ...

Jul 14 '10 at 21:26 NeuroGirl46
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676 views

How long should you treat CIDP with IVIG?

How long (before seeing a benefit) would you need to treat CIDP with IVIG?

Jul 14 '10 at 00:10 sghael ♦♦1
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652 views

Why do steroids worsen symptoms in Multifocal Motor Neuropathy?

Steroids seem to help in other immune-mediated neuropathies, such as CIDP. So why would cause and exacerbation in MMN?

Jul 14 '10 at 00:08 sghael ♦♦1
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317 views

Why are certain muscle groups affected in Inclusion body myositis?

Why is there a predilection for certain muscle groups (ie finger flexors, quadriceps) in IBM? I would think there would be no difference in the muscle fibers in these muscle groups.

Jul 13 '10 at 23:48 NeuroGirl46
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