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Late Responses in the Electrodiagnosis of Cervical Radiculopathies.

Galamb AM, Minea ID - Clujul Med (2015)

Bottom Line: With regard to the A wave, it occurred in a small number of cases, about 10%, with an average amplitude of about 120 μV and an average latency of 15ms.The distance from the point of stimulation where the collateral branch appeared was calculated to be approximately 35 cm.Among the F wave parameters, persistence, tacheodispersion and chronodispersion are recommended to be studied; these parameters were also included in the composite score along with the AAEM recommendations.

View Article: PubMed Central - PubMed

Affiliation: Department of Medical and Surgical Specialities, Faculty of Medicine, Transilvania University of Brasov, Romania.

ABSTRACT

Backround and aim: This paper aims to assess the parameters of late responses and then determine their usefulness in patients with cervical radiculopathy.

Patients and methods: We studied a total of 114 patients with bilateral assessment of median and ulnar nerves and of F and A waves parameters.

Results: We draw attention to the need of bilateral electrodiagnostic examination due to changes occurring in a third of cases also in the asymptomatic limb. Pluriradicular injuries occurred in one third of cases. The root that was most commonly affected in cases of uniradicular lesion was C7. The parameters with the most important alterations were persistence, tacheodispersion and chronodispersion, which were changed in about a half of the patients. With regard to the A wave, it occurred in a small number of cases, about 10%, with an average amplitude of about 120 μV and an average latency of 15ms. The distance from the point of stimulation where the collateral branch appeared was calculated to be approximately 35 cm.

Conclusions: Among the F wave parameters, persistence, tacheodispersion and chronodispersion are recommended to be studied; these parameters were also included in the composite score along with the AAEM recommendations.

No MeSH data available.


Related in: MedlinePlus

F-wave parameters, expressed as a percentage, for the upper limbs (continuation).
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f3-cm8801p44: F-wave parameters, expressed as a percentage, for the upper limbs (continuation).

Mentions: F-waves of increased amplitude where present in 27.38% of cases, persistence was altered in 46.03%, and 9.52% of patients had an increased number of repetitive F-waves. The average amplitude ratio between F and M-waves was altered in 4.40% and the maximum in 2.81% of cases (Fig. 3).


Late Responses in the Electrodiagnosis of Cervical Radiculopathies.

Galamb AM, Minea ID - Clujul Med (2015)

F-wave parameters, expressed as a percentage, for the upper limbs (continuation).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4508615&req=5

f3-cm8801p44: F-wave parameters, expressed as a percentage, for the upper limbs (continuation).
Mentions: F-waves of increased amplitude where present in 27.38% of cases, persistence was altered in 46.03%, and 9.52% of patients had an increased number of repetitive F-waves. The average amplitude ratio between F and M-waves was altered in 4.40% and the maximum in 2.81% of cases (Fig. 3).

Bottom Line: With regard to the A wave, it occurred in a small number of cases, about 10%, with an average amplitude of about 120 μV and an average latency of 15ms.The distance from the point of stimulation where the collateral branch appeared was calculated to be approximately 35 cm.Among the F wave parameters, persistence, tacheodispersion and chronodispersion are recommended to be studied; these parameters were also included in the composite score along with the AAEM recommendations.

View Article: PubMed Central - PubMed

Affiliation: Department of Medical and Surgical Specialities, Faculty of Medicine, Transilvania University of Brasov, Romania.

ABSTRACT

Backround and aim: This paper aims to assess the parameters of late responses and then determine their usefulness in patients with cervical radiculopathy.

Patients and methods: We studied a total of 114 patients with bilateral assessment of median and ulnar nerves and of F and A waves parameters.

Results: We draw attention to the need of bilateral electrodiagnostic examination due to changes occurring in a third of cases also in the asymptomatic limb. Pluriradicular injuries occurred in one third of cases. The root that was most commonly affected in cases of uniradicular lesion was C7. The parameters with the most important alterations were persistence, tacheodispersion and chronodispersion, which were changed in about a half of the patients. With regard to the A wave, it occurred in a small number of cases, about 10%, with an average amplitude of about 120 μV and an average latency of 15ms. The distance from the point of stimulation where the collateral branch appeared was calculated to be approximately 35 cm.

Conclusions: Among the F wave parameters, persistence, tacheodispersion and chronodispersion are recommended to be studied; these parameters were also included in the composite score along with the AAEM recommendations.

No MeSH data available.


Related in: MedlinePlus