Onset and recovery of ultrasound guided out-of-plane versus in-plane interscalene block in arthroscopic shoulder surgery

Ain-Shams Journal of Anesthesiology

Table 5 Onset and progression of the motor block over the first 20 min

Variable		Group I N = 30			Group O N = 30			P value
Muscle	Time	Score 0	Score 1	Score 2	Score 0	Score 1	Score 2	P value
Shoulder	1 min	30	0	0	30	0	0	-
	2 min	29	1	0	27	3	0	0.301
	3 min	15	15	0	5	10	15	< 0.001
	4 min	12	18	0	3	8	19	< 0.001
	5 min	9	21	0	0	10	20	< 0.001
	10 min	0	5	25	0	0	30	0.02
	15 min	0	2	28	0	0	30	0.150
	20 min	0	0	30	0	0	30	-
Arm	1 min	30	0	0	30	0	0	-
	2 min	29	1	0	28	2	0	0.554
	3 min	25	5	0	9	9	12	< 0.001
	4 min	20	10	0	2	13	15	< 0.001
	5 min	16	14	0	0	14	16	< 0.001
	10 min	2	8	20	0	2	28	0.031
	15 min	0	2	28	0	0	30	< 0.150
	20 min	0	0	30	0	0	30	-
Fingers	1 min	30	0	0	30	0	0	-
	2 min	30	0	0	30	0	0	-
	3 min	30	0	0	30	0	0	-
	4 min	23	7	0	22	8	0	0.766
	5 min	22	8	0	20	10	0	0.573
	10 min	20	10	0	3	12	15	< 0.001
	15 min	5	10	15	0	5	25	0.01
	20 min	0	5	25	0	2	28	0.228