Neurophysiological biomarkers of peripheral nervous system affection in patients with stable chronic obstructive pulmonary disease (COPD)

Table 5 Comparison between patient and control groups as regards to sural sensory nerve assessment

		COPD		Control		T value	P value
		Mean	SD	Mean	SD	T value	P value
Right sural nerve	Distal latency (ms)	4.2	0.78	3.69	0.29	4.41	< 0.001*
	Amplitude (uv)	9.65	5.04	14.06	4.05	3.04	< 0.001*
	Conduction velocity (m/s)	32.42	4.94	41.5	4.1	4.56	< 0.001*
Left sural nerve	Distal latency (ms)	4.55	0.82	3.72	0.32	2.92	0.005*
	Amplitude (uv)	8.72	4.73	17.29	4.01	3.8	< 0.001*
	Conduction velocity (m/s)	30.42	4.94	38.5	4.1	4.56	< 0.001*