Electrodiagnosis in Guillain-Barre syndrome (GBS) involves the use of nerve conduction studies and electromyography to assess the function of the peripheral nerves and muscles.
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Electrodiagnosis in GBS PPT Summary
- Early diagnosis of GBS is challenging as certain changes may not be evident within the first week.
- Electrodiagnosis plays a crucial role in the diagnosis of GBS, with characteristic findings including absent H response, abnormal F wave, and abnormal upper extremity SNAP.
- The H reflex is the most sensitive test for early GBS diagnosis.
- Electrodiagnostic criteria, such as those proposed by Albers et al. (1989), Hadden et al. (1998), and Feasby et al. (1993), can aid in the diagnosis of GBS.
- Reduced compound muscle action potential (CMAP) amplitude to less than 10% of the lower limit of normal is a powerful predictor of poor outcome in GBS.
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