Table 2

Serial nerve conduction studies

Patient	1			2			3			4			5			6			7			8
Day of study	7	40	72	7	13	36	3	38	73	7	28	46	6	23	88	5	15	32	1	13	56	1	8	35
Sensory studies
Median SNAP (μV)	44	49	41	26	25	26	32	33	27	27	26	35	30	45	45	21	30	35	26	34	32	66	45	50
Ulnar SNAP (μV)	32	40	30	33	21	29	32	28	27	26	23	28	22	31	42	39	39	31	24	33	32	47	37	40
Sural SNAP (μV)	13	14	17	12	14	10	26	24	21	18	15	17	23	21	20	16	15	15	30	22	20	27	15	17
Motor studies
Median DML (ms)	3.8	3.9	3.7	3.6	3.5	3.5	3.6	3.9	3.7	3.6	4.1	3.9	4.1	4.1	4.1	4.6	3.6	3.9	3.8	3.9	3.9	3.2	3.1	3.3
CMAP (mV)	8.2	8.9	8.6	9.0	9.2	9.5	10.5	11.5	9.9	7.5	8.1	7.7	10.2	10.2	10.1	9.3	8.5	9.4	8.9	8.6	8.5	13.7	10.7	11.7
CV (m/s)	53	52	55	57	56	55	51	53	53	56	56	57	55	59	59	53	51	54	53	53	54	62	59	60
Ulnar DML (ms)	3.0	3.1	2.9	2.9	2.8	2.8	2.9	3.1	2.8	2.6	3.0	3.1	2.5	2.5	2.5	3.2	2.8	2.6	2.5	3.0	2.7	2.5	2.7	2.9
CMAP (mV)	9.0	11.0	9.8	11.4	10.9	12.7	11.4	11.1	10.9	11.4	11.0	12.5	10.4	10.3	10.1	13.4	12.2	13.7	9.6	11.1	10.5	11.4	11.6	11.8
CV (m/s)	56	50	58	56	59	58	58	55	59	56	51	50	61	58	58	53	57	57	59	56	58	58	60	66

Patient	9				10			11				12				13			14		15
Day of study	7	15	30	60	5	16	49	5	18	25	85	6	14	30	76	7	14	48	1	9	3	28	44
Sensory studies
Median SNAP (μV)	15	11	11	19	16	25	29	18	23	24	39	21	13	24	34	NA	24	61	32	32	72	72	73
Ulnar SNAP (μV)	12	9	14	12	17	22	26	10	15	17	21	Ab	11	20	33	NA	9	63	29	25	66	62	68
Sural SNAP (μV)	16	14	11	12	10	15	14	14	10	10	16	22	16	19	26	NA	23	23	15	18	24	33	36
Motor studies
Median DML (ms)	3.9	3.8	4.0	3.8	4.2	3.9	3.9	3.5	3.2	3.0	3.4	3.2	3.4	4.2	3.7	2.9	2.7	3.7	3.8	3.9	3.4	3.7	3.9
CMAP (mV)	8.7	8.1	8.0	7.4	8.5	11.5	8.0	9.6	9.5	10.6	10.2	5.3	10.0	10.0	9.2	7.7	6.5	7.9	7.5	7.9	9.7	9.9	11.4
CV (m/s)	55	54	51	53	52	52	58	54	52	54	53	54	58	53	56	61	52	58	54	52	54	57	56
Ulnar DML (ms)	2.4	2.7	2.9	2.7	2.9	2.9	3.0	2.6	2.5	2.4	2.8	3.0	2.9	3.0	3.0	2.5	2.0	3.0	2.8	3.0	2.4	2.5	2.7
CMAP (mV)	9.9	11.1	12.8	11.2	7.9	10.5	9.2	10.1	11.7	11.6	12.1	3.8	10.0	9.6	11.0	4.2	1.8	9.4	6.6	9.2	9.5	9.5	9.6
CV (m/s)	59	58	55	60	51	55	57	58	62	60	58	57	55	52	54	55	58	58	62	63	65	51	58

The abnormal values, as defined in methods, are indicated in bold. Significant serial changes are underscored.
Ab, absent; CMAP, compound muscle action potentials; CV, conduction velocity; DML, distal motor latency; NA, not applicable because of ICU artifacts; SNAP, sensory nerve action potential.