The effect of music on preoperative sedation and the bispectral index.

We assessed the effect of music on the level of sedation and the electroencephalograph bispectral index (BIS) during the preoperative period. Fifty-four ASA physical status I-II patients, scheduled for elective septo-rhinoplastic surgery, were included in the study. Subjects were assigned to receive either music (music group; n = 28) or no music (control group; n = 26) during the preoperative period.