Electrode placement (use the bar electrode)
- E1 (black): Abductor digiti minimi (ADM) muscle (medial side of the hypothenar eminence)
- E2 (red): Distally along the little finger
- Ground: Dorsum of hand
Stimulation sites
- Three sites
- Wrist
- (-) Cathode (black): 8-cm proximal to E1 along the medial distal forearm.
- (+) Anode (red): proximal (in line with the ulnar nerve)
- Below elbow
- (-) Cathode (black): 3-4cm distal to the medial epicondyle (ulnar groove)
- (+) Anode (red): proximal (in line with the ulnar nerve)
- Above elbow
- (-) Cathode (black): 8-10cm proximal to the “below elbow” site (measured with a curved line through the ulnar groove)
- (+) Anode (red): proximal (in line with the ulnar nerve)
- Wrist
Additional Information
- Type of stimulation = Orthodromic
- If the amplitude is low, move E1 around until you get it over the motor point before calling it truly low.
- CPT codes for nerve conduction studies
- 95900 Nerve conduction, amplitude and latency/velocity study, each nerve; motor, without F-wave study
- 95903 Nerve conduction, amplitude and latency/velocity study, each nerve; motor with F-wave study
- 95904 Nerve conduction, amplitude and latency/velocity study, each nerve; motor with F-wave study, each nerve; sensory
- 95934 H-reflex, amplitude and latency study; record gastrocnemius/soleus muscle
- 95936 Record muscle other than gastrocnemius/soleus muscle