RT Journal Article
SR Electronic
T1 Median nerve conduction study findings in various arm positions
JF Neurosciences Journal
JO Neurosciences (Riyadh)
FD Prince Sultan Military Medical City
SP 270
OP 275
DO 10.17712/nsj.2024.4.20240034
VO 29
IS 4
A1 Fidancı, Halit
A1 Alaydın, Halil C.
YR 2024
UL http://nsj.org.sa/content/29/4/270.abstract
AB Objectives: To investigate the effects of various arm positions on median nerve conduction studies (NCSs).Methods: This prospective cohort study, conducted at Adana City Training and Research Hospital between January and July 2023, included 20 healthy participants. Median NCSs were performed on the participants in three different standing positions with the elbow as the stimulation point: 1) with the arm adducted (P1), 2) with the arm anteflexed (P2), and 3) with the arm raised upwards (P3). We obtained median nerve compound muscle action potential (CMAP) latency, duration, peak-to-peak (PP) amplitude, onset-to-negative peak (OP) amplitude, negative area/duration. Three CMAPs were obtained in each position, and the mean and minimum/maximum values at each position were analyzed.Results: The mean age (minimum–maximum) of the participants (11 male, 9 female) was 28.5±6.5 (20–42) years. Median nerve CMAP means (median) of latency/negative duration in the P1, P2, and P3 positions were 6.82±0.59 (6.83)/5.50±0.76 (5.39) ms, 6.99±0.56 (7.02)/5.72±0.73 (5.73) ms, and 7.03±0.58 (7.12)/5.79±0.80 (5.83) ms. Median nerve CMAP mean/minimum latency and negative duration were lowest in the P1 position (p<0.05). The mean median nerve CMAP OP amplitude was highest in P3 than P1 or P2 (p=0.042 and p=0.048).Conclusion: Median NCS results differed based on the position of the arm.