Neuropathy vs myopathy on EMG
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- Опубликовано: 8 май 2018
- This video explains neuropathic vs myopathic emg findings. It is an excerpt from 'Neurophysiology for Neurologists' and I've separated it out from there for the following reasons 1. Most viewers don't reach that far, and its a pity to miss it and 2. It's relevant to another video regarding Recruitment and Interference Patterns I will be releasing in tandem with this one, and easier to link to this way.
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Thank you a lot, it's so great that you always say why is particular change seen on the chart, not just that "it is like that in neurogenic myopathy".
My teacher explained this in the most confusing way possible I just couldn’t make sense of the conclusions she drew, and BOOM you explained this in 5 minutes
I am currently doing my EMG rotation. I understand the basics but during examining the patient it is really difficult to differentiate between them because the waves are very fast. My tutors are always keen to tell me but most of the time I keep scratching my head but with this video it actually starts to make sense. Thank you Dr. Freilich.
Practice practice practice, you'll get there in the end! Also, listen to as many emg's as you can. All about the sound :) Bw Simon
Thank you so much, it makes so much more sense now from the way you described it.
Thanks alot Dr. Freilich,
You do a great thing with these videos. I am currently learninng for my german neurology board exam, and I hurry to your videos in neurophysiology, when i am confused.
i dont mean to be so off topic but does any of you know a tool to log back into an instagram account?
I stupidly forgot my password. I love any assistance you can give me
I was trying to find guitar pickups but found this
Great series. Love this. Thanks to Dr Freilich
My son goes for an emg tmw . Thanks for the info
Thanks a lot!
Thank you for this, my doctor thinks I have congenital myopathy and I'm getting an EMG done soon. This helped me cope with the fact that there'll be needles stuck in me lol, at least it'll be helpful in my diagnosis.
Thanks sir
superb sir
Hi Dr, what does it mean if there are small polyphasic nascent potentials on emg but with full interferance pattern when previously the emg was showing chronic neurogenic changes such as enlarged muap with reduced recruitment?
Great video Dr. Simon! First year med student here. Would a normal nerve conduction study, but an abnormal EMG generally hint at myopathy rather than neuropathy? Thanks!!
Depends on what the EMG showed! Can reveal either. Bw Simon
Dr Simon Freilich would a nerve conduction study just further verify a suspected neuropathy based on EMG findings and further specify the location of nerve damage?
Thanks a lot i have a question.
what is normal duration and amplitude of motor unit potentials
Varies with each muscle and age. F Buchtal produced tables with that info. Bw Simon
It would have been better if you provided the physiological state, too.
Hi! I'm about to graduate from biomedical engineering and in order for me to graduate I need to do my thesis, I'm going to develop a telecommunications system with an SVM classfier so I can upload a database with a x number of emg readings, I'm focusing on duchenne's and becker's muscular dystrophies, I havent found a website nor an article that states what's the normal frequency, time, etc in which children are considered to have any of these dystrophies and I was wondering if you could help me out with that, maybe you could recommend me an article, some literature I should be looking into, I don't know, something. I'd highly appreciate it and thank you so much for uploading these videos!
Hi Daniela, very simply, diagnostically it just doesn't work like that to distinguish one myopathy from another, hence no literature. Bw though and good luck Simon
Hello Dr! My EMG after radiculopathy has shown chronic denervation of varying severity in several arm muscles. Should I interpret that as the state after axonal sprouting? Therefore, is reinnervation complete, and cannot improve further?
Would love to know the functional difference between normal and reinnervated muscle. I’m assuming there is a difference in fatigue, activation thresholds and force gradient, due to fewer motor units? Thank you!
Hi amerimnos, Do you have explanations about your denervation cause ?
@@huglion Hello,
My neurological deficits were due to cervical disc herniations. I had neck surgery about 9 months ago, and now I'm ok and back to work.
Dr Frelich Could you Please inform me what does it mean when my Nerve conduction study comes normal but my EMG says MUPS showed high amplitude and polyphascicity and incomplete interference pattern .. all my body spasms and tingles for almost 5 years now and i haven't got any answers or a diagnose .
Hi, it's difficult to comment without further information and I'm afraid I can't provide personalised answers to individuals. I do wish you all the best though, Simon
@@DrSimonFreilich Thank you
My family member had a very similar issue as yours with similar results and was told by her neurologist here in California Incomplete interference pattern is considered to be a reflection of loss of motor units. Maybe a second opinion would be recommended. I'm not giving medical advice and not sponsoring any neurologist/neuroscience physicians. Good Luck with your diagnosis.
Hi, Do you have answer about your abnormal emg ?
Hello Dr. Freilich! What does it look like when you’re diagnosed with both?
Confusing patterns with both! In this scenario it's nearly always a myopathy with secondary fiber splitting leading to neurogenic potentials being generated. There are some exceptions where both can occur simultaneously e.g. Critical Care Neuromyopathy. Bw Simon
Dr Freilich
What could an emg show if amplitudes were high in several limbs but no other irregularities are to find?
Hi Dom, Do you have answer about high amplitude ?
Hello Doctor, Is the second one means MND / ALS disease ?
No, there are many causes for denervation. Bw Simon
@@DrSimonFreilich whats the more current causes ?
Can long term use of Omeprazole cause myopathy?
No. Bw Simon
Can crack cocaine poisoning cause neuropathy
Yes. Bw Simon
@@DrSimonFreilich what can it lead to
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