Limits...
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

Pearson correlations related to F-wave velocity and F/M ratio.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4508615&req=5

f7-cm8801p44: Pearson correlations related to F-wave velocity and F/M ratio.

Mentions: The patient age was significantly negatively correlated with the minimum, medium and maximum proximal velocity, in the same way appearing the correlations between the velocities and F ratio. Tacheodispersion showed a significant positive correlation with the minimum, average and maximum proximal velocity and also with the presence of high amplitude F waves. On the other hand, the presence of repetitive F-waves showed a highly significant positive correlation with the average and maximum amplitude ratio between F and M-waves. There was also a negative correlation between the presence of F-waves blocks and the maximum velocity or maximum ratio between F and M-waves amplitude (Tab. II, Fig. 7).


Late Responses in the Electrodiagnosis of Cervical Radiculopathies.

Galamb AM, Minea ID - Clujul Med (2015)

Pearson correlations related to F-wave velocity and F/M ratio.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

f7-cm8801p44: Pearson correlations related to F-wave velocity and F/M ratio.
Mentions: The patient age was significantly negatively correlated with the minimum, medium and maximum proximal velocity, in the same way appearing the correlations between the velocities and F ratio. Tacheodispersion showed a significant positive correlation with the minimum, average and maximum proximal velocity and also with the presence of high amplitude F waves. On the other hand, the presence of repetitive F-waves showed a highly significant positive correlation with the average and maximum amplitude ratio between F and M-waves. There was also a negative correlation between the presence of F-waves blocks and the maximum velocity or maximum ratio between F and M-waves amplitude (Tab. II, Fig. 7).

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