Table 3

Electrodiagnostic findings

Hypothyroidism (n=24) Hyperthyroidism (n=21) Reference and p Values
Peroneus MNCV48.3 (3.4)48.6 (3.4)>40 m/s; NS
Median MNCV58.5 (2.6)58.9 (3.7)>49 m/s, NS
Sural SNCV46.5 (4.5)45 (3.6)>40 m/s; NS
Radial SNCV* 53.9 (6.3)54.2 (6.3)>42 m/s; NS
Median SNCV 43.9 (6.5)48.3 (4.3)>41 m/s; p<0.05
ATR latency right35.1 (2.3)35.7 (2.4)<40.4 ms; NS
ATR latency left35.2 (2.4)35.7 (2.3)<40.4 ms; NS
PTR latency right20.1 (1.4)20.2 (1.3)<24 ms; NS
PTR latency left19.9 (1.2)20.1 (1.1)<24 ms; NS
H reflex soleus29.9 (2.1)29.3 (2.1)<34.4 ms; NS
F response median26.5 (1.4)26.4 (1.9)<31 ms; NS
F response peroneal47.8 (2.5)47.2 (4.2)<61 ms; NS
CMCT thenar 6.3 (1.2) 5.5 (1.1)<8.0 ms; NS
CMCT extensor digitorum brevis11.8 (1.4)12.1 (1.5)<20 ms; NS
  • Values are means (SD)). *Hypothyroidism (n=13); hyperthyroidism (n=11). Hypothyroidism (n=16); hyperthyroidism (n=11). MNCV and SNCV=Motor and sensory nerve conduction velocity; ATR and PTR=Achilles and patellar tendon reflexes; Median and Peroneal=median and peroneal nerve. H reflex = Hoffman reflex. CMCT=central motor conduction time. NS=not significant. (>): lower limit and (<) upper limit of reference value. The reference latencies of tendon reflexes, H reflexes, F waves, and CMCT are directly related to age and height.