Studies which have done to analyze the effect of height on NCS parameters have shown a significant positive correlation of height with distal latency
and significant negative correlation of height with conduction velocity.
The evaluations included age, gender, and 6 electromyography variables, including right/left median nerve sensory velocity, right/left fourth finger peak latency difference, and right/left median nerve motor distal latency
Results: The highest sensitivities were found in the median sensory conduction velocity across the palm-wrist (88%), and digit I-wrist segments (80%), median motor distal latency
over the APB (77%), and L-I study (76%).
Compound muscle action potential (CMAP) amplitude, distal latency
, conduction velocity, and minimum F-response latency and F-wave persistence were calculated for motor NCSs.
Differences between the mean MNCSA values, median nerve sensory conduction velocity (SCV), and motor distal latency
(MDL) were statistically significant between the groups.
001 = significant B=SCD with Neuropathy, NS= Not Significant C =SCD without Neuropathy Table 5: Showing Mean Distal Latency
Nerve Mean Distal Latency
m/sec Studied A (n=25) B (n=10) Median N 2.
Mean changes in nerve conduction velocity of the tibial nerve, distal latency
of the superficial peroneal nerve and sural nerve, and sensory amplitude of the sural nerve were significantly higher in the C.
CMAPs and motor nerve conduction velocities, distal latency
Patients diagnosed with mild or moderate idiopathic CTS by electrophysiological examination based on reference values used in our laboratory [median motor distal latency
Nerve conduction study showed decreased CMAP amplitude in both upper and lower limbs with conduction block in left median, left ulnar and right peroneal nerve with significantly decreased conduction velocity (<70%) and markedly increase distal latency
(>130%) with absent SNAP in upper limb with preserved sural SNAP with absent 'H' and 'F reflex in both upper and lower limbs consistent with a diagnosis of AIDP.
Based on the electrophysiological findings, we propose three grades: mild (prolonged sensory distal latency
more than 3.
A motor conduction study revealed a reduced compound muscle action potential amplitude, slowed nerve conduction velocity, delayed distal latency
, and prolonged F latency over the median, ulnar, tibial, and peroneal nerves.