seminar on repetitive nerve stimulation physiology,application in various neuromuscular disorders

1. Repetitive Nerve Stimulation

10. Relationship -EPP,AP,CMAP

16. Machine setup for RNS 30-50 Stimulus rate -high <5 Stimulus rate -low 0.1 Stimulus duration (msec) 2-3 High filter (KHz) 2-5 Low filter (Hz) 2 Sweep time (ms/div) 2-5 Sensitivity (mV/div)

18. Effect of temperature on RNS

20. Effect of different stimulation rates

26. Slow RNS

28. Rapid RNS

29. Patterns of response to slow RNS

30. Activation cycle in MG

35. SFEMG

36. Jitter and block

37. Myasthenia gravis

41. Baseline and 10sec exercise

42. 60sec exercise-exhaustion

44. Repetitive CMAP

46. LEMS

48. Incrementing response after brief exercise (10-15 sec) in LEMS. Increment is 10-fold, with CMAP of 3.2 mV. CP CMAP amplitude is 0.35 mV (normal >1 mV).

49. Incremental response in LEMS

50. 50hz RNS-increments

59. Thank you