Intraoperative compound muscle action potentials (CMAPs) amplitude changes after decompression and neurolysis of peripheral nerves in upper limbs neuropathies: electrophysiologial considerations and relation with clinical outcome

2021 ◽  
Vol 65 (4) ◽  
Author(s):  
Ignazio G. VETRANO ◽  
Roberto CORDELLA ◽  
Irene TRAMACERE ◽  
Vittoria NAZZI
Keyword(s):  
Clinical Outcome ◽  
Peripheral Nerves ◽  
Action Potentials ◽  
Upper Limbs ◽  
Muscle Action ◽  
Compound Muscle Action Potentials

Latency of compound muscle action potentials of the anal sphincter after magnetic sacral stimulation

2001 ◽  
Vol 24 (9) ◽  
pp. 1232-1235 ◽  
Author(s):  
G.L. Morren ◽  
S. Walter ◽  
H. Lindehammar ◽  
O. Hallböök ◽  
R. Sjödahl
Keyword(s):  
Anal Sphincter ◽  
Action Potentials ◽  
Muscle Action ◽  
Compound Muscle Action Potentials ◽  
Sacral Stimulation

Mapping the Compound Muscle Action Potentials of Cricothyroid Muscle Using Electromyography in Thyroid Operations

2009 ◽  
Vol 250 (2) ◽  
pp. 293-300 ◽  
Author(s):  
Ben Selvan ◽  
Srinivasa Babu ◽  
M J. Paul ◽  
Deepak Abraham ◽  
Prasanna Samuel ◽  
...  
Keyword(s):  
Action Potentials ◽  
Muscle Action ◽  
Cricothyroid Muscle ◽  
Compound Muscle Action Potentials

scholarly journals Facial nerve electroneurography: variability in normal subjects

1996 ◽  
Vol 54 (3) ◽  
pp. 393-396 ◽  
Author(s):  
Jovany Luis Alves de Medeiros ◽  
João Antonio Maciel Nobrega ◽  
Luiz Augusto Franco de Andrade ◽  
Yara Juliano
Keyword(s):  
Facial Nerve ◽  
Action Potentials ◽  
Normal Values ◽  
Normal Subjects ◽  
Nasolabial Fold ◽  
Confidence Limits ◽  
Muscle Action ◽  
Surface Electrodes ◽  
Normal Individuals ◽  
Compound Muscle Action Potentials

Twenty normal individuals were submitted to facial nerve electroneurography using different techniques in order to determine the most accurate to obtain the latencies and amplitudes of the compound muscle action potentials (CMAP) of the facial muscles. First of all it was determined in which muscle or muscle group highest amplitude CMAP could be recorded with the lowest variability between sides and in test-retest. Different techniques were studied in order to determine which could give the best results. This was shown to be an arrangement of bipolar surface electrodes fixed to a plastic bar. The records with higher amplitude where obtained from the nasolabial fold muscles. Therefore 65 normal volunteers were examined using this technique and recording the potentials obtained over the nasolabial fold muscles. Normal values were determined (latency lower than 4.5 ms and amplitude larger than 2 mV - 95% confidence limits).

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