Effects of Cardiopulmonary Bypass Surgery on Auditory Function: A Preliminary Study

Table 6

Postoperation changes in hearing thresholds.

	PTA1 (250, 500, and 1000 Hz)		PTA2 (2 K,4 K, and 8 KHz)		PTA3 (10 K,12 K, and 16 KHz)
Change in hearing thresholds	>15 dB	>30 dB	>15 dB	>30 dB	>15 dB	>30 dB
Number of subjects	0	1	10	4	13	6