Cephalic tetanus studied with single fibre EMG.

• DOI: 10.1136/jnnp.46.9.862
• Publication Date: 2008-11-10T21:16:40Z
• Authors: J M Fernandez; M Ferrandiz; L Larrea; R Ramio; M Boada
• Keywords: Trismus; Neuromuscular transmission; Silent period

In a case of cephalic tetanus with left facial spasms and trismus, the repetitive stimulation nerve at 3, 10 20 Hz showed no facilitation or decrement. The amplitudes blink reflex were 50% lower on affected side. silent period masseter muscles was shortened. Concentric needle examination masseters EMG frontalis muscle increased jitter blocking in significant proportion recorded potentials. Both improved higher innervation rates. All electrophysiological findings normal second when patient asymptomatic. single fibre point to presynaptic defect neuromuscular transmission human tetanus.