Article Figures & Data
Figures
- Figure 1
- Arm positions in participants.
- Figure 2
- The median nerve CMAP findings of a participant were obtained in different arm positions. CMAP- compound muscle action muscle.
- Figure 3
- The comparison of CMAP distal latencies in different arm positions. CMAP- compound muscle action muscle.
Tables
Median nerve CMAP P1 P2 P3 P-value mean±SD (median) (min-max) mean±SD (median) (min-max) mean±SD (median) (min-max) Minimum latency (ms) 6.79±0.59 (6.80) (5.63-8.28) 6.93±0.57 (6.95) (5.94-8.36) 6.99±0.57 (7.07) (5.86-8.44) <0.001 Mean latency (ms) 6.82±0.59 (6.83) (5.63-8.33) 6.99±0.56 (7.02) (6.02-8.41) 7.03±0.58 (7.12) (5.97-8.52) <0.001 Maximum amplitude- PP (mV) 14.93±4.38 (14.40) (7.80-23.60) 15.26±4.34 (14.75) (8.00-23.00) 15.72±4.34 (15.15) (9.10-23.40) 0.001 Mean amplitude- PP (mV) 14.71±4.25 (14.35) (7.77-23.22) 15.02±4.17 (14.68) (8.00-22.20) 15.44±4.31 (14.83) (8.87-23.00) <0.001 Maximum amplitude- OP (mV) 8.93±3.10 (8.40) (3.90-16.80) 9.10±2.95 (8.30) (4.20-15.80) 9.44±3.06 (8.70) (5.20-15.90) 0.008 Mean amplitude- OP (mV) 8.77±3.05 (8.10) (3.83-16.63) 8.97±2.88 (8.25) (4.13-15.70) 9.27±3.03 (8.37) (5.03-15.77) 0.002 Minimum negative duration (ms) 5.46±0.75 (5.35) (4.06-6.95) 5.65±0.75 (5.63) (4.14-7.03) 5.73±0.80 (5.82) (3.91-7.27) <0.001 Mean negative duration (ms) 5.50±0.76 (5.39) (4.09-6.96) 5.72±0.73 (5.73) (4.22-7.11) 5.79±0.80 (5.83) (3.96-7.37) 0.001 Maximum negative area 25.86±6.55 (26.56) (13.85-37.00) 28.34±6.41 (29.12) (15.36-38.12) 29.50±6.48 (30.96) (17.97-40.50) <0.001 Mean negative area 25.46±6.55 (26.14) (13.78-36.49) 27.90±6.21 (28.90) (15.15-38.00) 29.10±6.62 (30.03) (17.81-40.43) <0.001 CMAP- compound muscle action muscle; NCS- nerve conduction study; OP- onset-peak; P1- first position; P2- second position; P3- third position; PP- peak-to-peak.
Median nerve CMAP Pairwise comparisons- P-value P1-P2 P1-P3 P2-P3 Minimum latency (ms) 0.001 <0.001 0.150 Mean latency (ms) <0.001 <0.001 0.096 Maximum amplitude- PP (mV) 0.594 0.045 0.090 Mean amplitude- PP (mV) 0.363 0.018 0.051 Maximum amplitude- OP (mV) 1.000 0.069 0.189 Mean amplitude- OP (mV) 0.450 0.042 0.048 Minimum negative duration (ms) 0.006 0.003 0.156 Mean negative duration (ms) 0.003 0.003 0.420 Maximum negative area (mVms) <0.001 <0.001 0.018 Mean negative area (mVms) <0.001 0.001 0.015 CMAP- compound muscle action muscle; NCS- nerve conduction study; OP- onset-peak; P1- first position; P2- second position; P3- third position; PP- peak-to-peak
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