NCS-A WAVE

SUMMARY

1. Stable, small response that is usually abnormal that appears with either sub-maximal or supra-maximal stimulation.

2. Etiology: activation of motor axons due to either axon branching (usually seen with submaximal stimulation) or ephaptic transmission (seen with supramaximal stimulation).

3. Abnormal waves seen in chronic nerve lesions.

Reference(s)

Wilkinson, I., Furmedge, D. and Sinharay, R. (2017). Oxford handbook of clinical medicine. Oxford: Oxford University Press. Get it on Amazon.
Feather, A., Randall, D. and Waterhouse, M. (2020). Kumar And Clark’s Clinical Medicine. 10th ed. S.L.: Elsevier Health Sciences. Get it on Amazon.
Hannaman, R. A., Bullock, L., Hatchell, C. A., & Yoffe, M. (2016). Internal medicine review core curriculum, 2017-2018. CO Springs, CO: MedStudy.
Therapeutic Guidelines. Melbourne: Therapeutic Guidelines Limited. https://www.tg.org.au [Accessed 2021].