Effect of Depth of Total Intravenous General Anesthesia on Intraoperative Electrically Evoked Compound Action Potentials in Cochlear Implantation Surgery

Table 2

Number of nonrecordable leads within light and deep anesthesia.

	Light anesthesia, N (n1), N = 39	Deep anesthesia, N (n2), N = 39	value ( value 2)
Lead 1	2 (0)	5 (3)	NS (NS)
Lead 2	5 (2)	5 (2)	NS (NS)
Lead 3	3 (2)	2 (1)	NS (NS)
Lead 4	3 (1)	2 (0)	NS (NS)
Lead 5	5 (3)	4 (2)	NS (NS)
Lead 6	5 (4)	3 (2)	NS (NS)
Lead 7	2 (2)	5 (5)	NS (NS)
Lead 8	6 (4)	6 (4)	NS (NS)
Lead 9	7 (4)	7 (4)	NS (NS)
Lead 10	5 (3)	8 (6)	NS (NS)
Lead 11	4 (2)	4 (2)	NS (NS)
Lead 12	11 (1)	12 (2)	NS (NS)

N: number of total nonrecordable cases; NS: not significant; n1: is the number of leads that have been changed in the deep anesthesia and became (or were) recordable; n2: number of leads that have been changed in the light anesthesia and became (or were) recordable; value 2 is the value for the change in the recordability. Statistical test: Pearson’s χ² test.