. 2023 Nov 10;13(11):1576. doi: 10.3390/brainsci13111576

Table 2.

Nerve conduction studies in patients and controls.

		Carpal Tunnel Syndrome				Healthy Controls
		Dropping Objects			No Dropping Objects
	All	Small	Large	Large/Small
Median NCS
SCV (m/s)
Right	41.6 ± 7.9 **^δ	40.9 ± 9.3 ^δ	42.5 ± 7.8 ^δ	39.1 ± 7.3 **^δ	42.7 ± 7.2 ^δ	57.9 ± 6.8
Left	45.2 ± 8.4 ^δ	44.3 ± 8.0 ^δ	43.4 ± 8.5 ^δ	43.4 ± 10.0 ^δ	45.2 ± 8.4 ^δ	59.1 ± 5.1
SAP-amp (µV)
Right	19.1 ± 10.0 **^δ	17.8 ± 15.2 ^δ	19.4 ± 16.4 ^δ	14.0 ± 13.1 **^δ	19.1 ± 10.0 ^δ	44.4 ± 21.8
Left	25.5 ± 13.5 ^δ	20.9 ± 17.8 ^δ	22.6 ± 18.4 ^δ	19.7 ± 12.4 ^δ	25.5 ± 13.5 ^δ	51.2 ± 20.9
MCV (m/s)
Right	52.8 ± 4.6 ^§	52.1 ± 3.8 ^§	53.6 ± 5.4 ^§	51.8 ± 4.3 ^§	52.8 ± 4.6 ^§	56.0 ± 4.8
Left	51.7 ± 9.5 ^δ	52.8 ± 5.4 ^δ	53.5 ± 5.2 ^δ	54.5 ± 3.6 ^§	51.7 ± 9.4 ^δ	58.8 ± 4.6
CMAP-amp (mV)
Right	7.8 ± 3.2 ^§	8.0 ± 4.3	6.8 ± 2.0 ^§	7.2 ± 2.6 ^§	7.8 ± 3.1	8.6 ± 3.4
Left	7.9 ± 3.1	7.8 ± 4.5	6.8 ± 2.6	7.4 ± 3.3	8.0 ± 3.1	9.2 ± 5.4
DML (ms)
Right	4.5 ± 1.1 ^δ	4.5 ± 1.7 ^δ	4.5 ± 1.5 ^δ	5.4 ± 1.7 ^δ**	4.5 ± 1.1 ^δ	3.3 ± 0.4
Left	4.2 ± 1.0 ^δ**	4.8 ± 1.3 ^δ	4.5 ± 1.2 ^δ	4.7 ± 1.4 ^δ	4.2 ± 1.0 ^δ	3.3 ± 0.7
Ulnar NCS
SCV (m/s)
Right	58.2 ± 5.3	56.5 ± 6.0	56.1 ± 4.3	55.3 ± 4.6	58.2 ± 5.3	58.1 ± 6.2
Left	58.0 ± 7.14	56.7 ± 7.1	56.5 ± 4.4	55.1 ± 3.7	58.0 ± 7.1	58.2 ± 7.0
SAP-amp (µV)
Right	30.7 ± 14.9 ^δ	30 ± 15.8 ^δ	30.7 ± 15.2 ^δ	28.2 ± 13.1 ^δ	30.8 ± 14.9 ^δ	45.5 ± 20.1
Left	33.1 ± 16.3 ^δ	28.6 ± 16 ^δ	33.9 ± 18.7 ^δ	27.6 ± 10.4 ^δ	33.1 ± 16.3 ^δ	47.4 ± 23.9

CMAP-amp: compound muscle action potential amplitude; DML: distal motor latency; m: meters; MCV: motor conduction velocity; ms: milliseconds; mV: milliVolt; NCS: nerve conduction studies; s: seconds; SAP-amp: sensory action potential amplitude; SCV: sensory conduction velocity; µV: micronVolt; ** p < 0.05 vs. patients not complaining of dropping objects; ^δ p < 0.0001 vs. healthy controls; ^§ p < 0.05 vs. healthy controls.