A patient with Lambert-Eaton myasthenic syndrome presents with proximal weakness. Which advanced procedure is diagnostic?

A patient with Lambert-Eaton myasthenic syndrome presents with proximal weakness. Which advanced procedure is diagnostic?

  • Correct Answer: Repetitive nerve stimulation
  • Electromyography (EMG)
  • Muscle biopsy
  • Single-fiber EMG

Explanation: Single-fiber EMG is highly specific for diagnosing Lambert-Eaton myasthenic syndrome.

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