Table 1.

Dose Grid of Study Design.

Patients (n)	Dex (μg/kg)	Suf (μg/kg [n])
20	0	.2 (5), .3 (5), .4 (5), .5 (5)
20	0.3	.1 (5), .2 (5), .3 (5), .4 (5)
20	0.5	.1 (5), .2 (5), .3 (5), .4 (5)
20	0.7	.1 (5), .2 (5), .3 (5), .4 (5)
20	0.9	.1 (5), .2 (5), .3 (5), .4 (5)
20	1.1	.1 (5), .15 (5), .2 (5), .3 (5)

Dex: dexmedetomidine. Suf: sufentanil.