| Indicative sensory conduction findings according to age | ||||
|---|---|---|---|---|
| Median nerve | Sural nerve | |||
| Age ( n ) | Conduction velocity (m/s) | Amplitude (μV) | Conduction velocity (m/s) | Amplitude (μV) |
| 7 dayI mth (20) | 22.31 (2.16) * | 6.22 (1.30) | 20.26 (1.55) | 9.12 (3.02) |
| 1–6 mths (23) | 35.52 (6.59) | 15.86 (5.18) | 34.63 (5.43) | 11.66 (3.57) |
| 6–12 mths (25) | 40.31 (5.23) | 16.00 (5.18) | 38.18 (5.00) | 15.10 (8.22) |
| 1–2 yrs (24) | 46.93 (5.03) | 24.00 (7.36) | 49.73 (5.53) | 5. (9.98) |
| 2–4 yrs (22) | 49.51 (3.34) | 24.28 (5.49) | 52.63 (2.96) | 23.27 (6.84) |
| 4–6 yrs (20) | 51.71 (5.16) | 25.12 (5.22) | 53.83 (4.34) | 22.66 (5.42) |
| 6–14 yrs (21) | 53.84 (3.26) | 26.72 (9.43) | 53.85 (4.19) | 26.75 (6.59) |
| Indicative motor conduction findings according to age | ||||||||
|---|---|---|---|---|---|---|---|---|
| Median nerve | Peroneal nerve | |||||||
| Age ( n ) | DML (ms) | CV (ms) | F (ms) | AMP (mV) | DML (ms) | CV (ms) | F (ms) | AMP (mV) |
| 7 dayI mth (20) | 2.23 (0.29)* | 25.43 (3.84) | 16.12 (1.5) | 3.00 (0.31) | 2.43 (0.48) | 22.43 (1.22) | 22.07 (1.46) | 3.06 (1.26) |
| 1–6 mths (23) | 2.21 (0.34) | 34.35 (6.61) | 16.89 (1.65) | 7.37 (3.24) | 2.25 (0.48) | 35.18 (3.96) | 23.11 (1.89) | 5.23 (2.31) |
| 6–12 mths (25) | 2.13 (0.19) | 43.57 (4.78) | 17.31 (1.77) | 7.67 (4.45) | 2.31 (0.6) | 43.55 (3.77) | 25.86 (1.35) | 5.41 (2.01) |
| 1–2 yrs (24) | 2.04 (0.18) | 48.23 (4.58) | 17.44 (1.29) | 8.90 (3.61) | 2.29 (0.43) | 51.42 (3.02) | 25.98 (1.95) | 5.80 (2.48) |
| 2–4 yrs (22) | 2.18 (0.43) | 53.59 (5.29) | 17.91 (1.11) | 9.55 (4.34) | 2.62 (0.75) | 55.73 (4.45) | 29.52 (2.15) | 6.10 (2.99) |
| 4–6 yrs (20) | 2.27 (0.45) | 56.26 (6.61) | 19.44 (1.51) | 10.37 (3.66) | 3.01 (0.43) | 56.14 (4.96) | 29.98 (2.68) | 7.10 (4.76) |
| 6–14 yrs (21) | 2.73 (0.44) | 57.32 (3.35) | 23.23 (2.57) | 12.37 (4.79) | 3.25 (0.51) | 57.05 (4.54) | 34.27 (2.29) | 8.15 (4.19) |
| Mean (SD) DML, distal motor latency; CV, conduction velocity; AMP, amplitude; F, F-wave latency; Adapted from Parano E, Uncini A, De Vivo DC, Lovelace RE (1993) Electrophysiologic correlates of peripheral nervous system maturation in infancy and childhood. J Child Neurol 8 (4):336-8. DOI: 10.1177/088307389300800408 PMID: 8228028. |
Source: Forsyth R, Newton R, eds. Paediatric Neurology (Oxford Specialist Handbooks in Paediatrics). 3 ed. ed. Oxford, UK: Oxford University Press; 2017. https://oxfordmedicine.com/view/10.1093/med/9780198784449.001.0001/med-9780198784449.
