2021 Workshop Handout Bundle-EDX Evaluation of the Lower Cranial Nerves

EDX Evaluation of the Lower Cranial Nerves - Stino/Kushlaf

Pdf Summary

This document is a summary of an AANEM workshop on the electrodiagnostic evaluation of the lower cranial nerves, with a focus on cranial nerve XI (CN XI) and XII (CN XII). The workshop covers the relevant anatomical features and etiologies of CN XI and CN XII mononeuropathies. It discusses the utility of evaluating these cranial nerves in the diagnosis and management of myasthenia and amyotrophic lateral sclerosis (ALS), as well as other neuromuscular disorders. The document also includes information on the technical considerations for performing nerve conduction studies (NCS), highlighting the protocols and techniques used for CN XI evaluation. It describes the abnormal findings that may be observed in NCS and needle electromyography (EMG) testing, such as differences in CMAP amplitude and the presence of fibrillation potentials or positive sharp waves. The document concludes with references for further reading on the topic.

Keywords

AANEM workshop

electrodiagnostic evaluation

lower cranial nerves

cranial nerve XI

cranial nerve XII

mononeuropathies

myasthenia

amyotrophic lateral sclerosis

neuromuscular disorders

nerve conduction studies

ncs

ALS