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T-wave response in cervical root lesions.

K Schott1, E Koenig

  • 1University Neurology Clinic, Tübingen, Germany.

Acta Neurologica Scandinavica
|October 1, 1991
PubMed
Summary
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Electrophysiological T-wave responses can help diagnose cervical radiculopathies affecting C6 or C7 nerve roots. This method shows promise for identifying nerve damage in patients with these conditions.

Area of Science:

  • Neurology
  • Electrophysiology
  • Musculoskeletal Disorders

Background:

  • Cervical radiculopathies, particularly C6 and C7, can cause significant upper limb dysfunction.
  • Accurate diagnosis is crucial for effective management and treatment of nerve root compression.

Purpose of the Study:

  • To evaluate the diagnostic utility of electrophysiological T-wave responses in patients with cervical radiculopathies.
  • To compare T-wave responses with electromyography (EMG) and radiological findings.

Main Methods:

  • Electrophysiological recording of T-wave responses in biceps and triceps brachii muscles.
  • Study included 31 healthy subjects and 15 patients with unilateral C6 or C7 root lesions.
  • Comparison of T-wave response findings with EMG and radiological assessments.

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Main Results:

  • Pathological T-wave responses were observed in 73% of patients.
  • In patients with radiological correlates, 90% showed pathological T-wave responses, compared to 60% with EMG pathology.
  • All patients with radiological evidence also exhibited abnormal electrophysiological test results (EMG or T-wave).

Conclusions:

  • Electrophysiological measurement of T-wave responses is a potentially valuable tool for diagnosing cervical radiculopathies.
  • T-wave response testing may offer superior sensitivity compared to EMG in certain cases of cervical nerve root lesions.