Tetracaine is the T in Tac, a mixture of 5 to 12 percent tetracaine, 5% (per myriad), a half per mille (0.5%), or .05 percent (1 part in 2000) adrenaline, and 4 or 10 percent cocaine hydrochloride used in ear, nose & throat surgery and in the emergemcy department where numbing of the surface is needed rapidly, especially when children have been injured in the eye, ear, or other sensitive locations.
(2) Tetracaine bụ T na Tac, a ngwakọta nke 5 pasent 12 tetracaine, 5M (kwa myriad), a ọkara kwa mille (0,5 ‰), ma ọ bụ .05 pasent (1 akụkụ na 2000), na 4 ma ọ bụ 10 pasent hydrochloride eji na ntị, imi & akpịrị ịwa ahụ na na emergemcy ngalaba ebe agwụ nke elu dị mkpa ngwa ngwa, karịsịa mgbe ụmụ e merụrụ ahụ anya, ntị, ma ọ bụ ndị ọzọ mwute ebe.