Neuromuscular Junction Disorder EMG

This phenomenon occurs after high rates of stimulation (20-50HZ) or tetanic contraction

Which NMJ disorder usually spares bulbar and extraoccular muscles?

In this condition, antibodies block ACH receptors at postsynaptic neuromuscular junction of skeletal muscles

This terminology describes the phenomenon when there is so much jitter that the second potential doesn't show up.

Which NMJ condition is associated with very low CMAP amplitude on NCS?

This condition is characterized by antibodies against voltage gated Ca++ channels in the NMJ.

What % is considered significant?

This substance can cause Descending weakness ( CN muscles-> shoulders->feet).

Which NMJ condition is associated with reduced MEPP amplitudes?

1) Which condition will give this result 2) what is the mechanism for this phenomenon?

In this condition, ACHesterase inhibitor (Edrophonium) reverses weakness.

This condition is caused by deficiency in ACH storage, mobilization, re-synthesis and as muscle weakness in NEWBORN.

Which NMJ condition is associated with small cell lung cancer

This condition is caused by deficiency in presynaptic ACH release.

This term is defined as the VARIABILITY of potential time between 2 action potentials from 2 muscle fibers belonging to the same unit.

This condition of general weakness and fatique is associated with thymoma

In this phenomenon, increased CMAP amplitudes are seen with repetitive stimulation (after subsequent stimulation) due to better SYNCHRONY of muscle fibers action potentials.

Which NMJ is associated with dry mouth, metallic taste, constipation, erectile dysfunction?