Needle EMG: primer

In this video, I will explain the underlying neuroanatomy en neurophysiology needed to interpret the needle EMG. This video is intended for neurology trainees and therefore requires some knowledge of basic neuroanatomy and physiology. After watching this video, you will be able to explain the processes going on in the muscle that result in the EMG signal as we see it on the screen, in healthy subjects, in patients with nerve lesions and in patients with myopathy.

[bahaawaad]

Large, long, polyphasic MUAPS with reduced recruitment suggestive of neuropathic pattern. Your content is concise & informative. Keep up the good work 🌹

[syamvs]

Fibrillation and polyphasic waves consistent with neuropathic patterns

[farahazri]

It is a neurogenic pattern some of th MUP are higher than 2mv, and less recruitment,
Thank you for this interesting video very helpful, if you can give us more video training 😅that will be fantastic

[machomarcello]

Long duration, large amplitude, polyphasic MUAP with reduced recruitment. Spontaneous activity: fibrillation. This is suggestive for neuropathic lesion.

[Liv__]

Thank you so much, this video was very helpful!

[ZaheerAhmed-wx]

Hey there. I am from Pakistan and You are amzaing

[khalidalbagdadymd]

Large, long, some polyphasic MUPs, reduced recruitment. Old neuropathic injury.

[drsachinrathod]

Really Nice explanation..kindly add more live vedio about EMG.

[harikiranperumalla]

I feel audio is not so clear, content is good 😊

[abuwadie]

Hello sir. Thanks for sharing.
I had an EMG done roughly 3 weeks ago to investigate muscle twitching in my right arm. ( not sure if that was recommended ). The emg was uncomfortable. I jumped at one point during the exam during the NVC part. The examiner apologised. It was over my ulnar nerve. I was told my EMG was normal. Apart from a mild ulnar neuropathy ( velocity 40) I was unaware nor did I have symptoms of neuropathy prior to the exam ever . Now 3 weeks later and i am still having excruciating burning in my palm 5th and 4th digit and shocky feelings in my arm after the EMG, all of which is new to me. Is this normal? Can the emg cause nerve damage ? If so how can I find out? I was told by a colleague that during the needle portion no needles was placed near my ulnar or elbow region. Can the volts during NVC cause nerve damage or irritation that lasts this long ? Are EMG standardised so that the examiner cannot exceed unsafe voltage? And is any of this temporary from your experience? Thank you kindly for any input you may have.