<prompt> Dose of local anesthesia for spinal isare?Lignocaine -1Lignocaine - 2.5Lignocaine - 5Bupivacaine - 0.5  <response>: Ans. is c i.e., Lignocaine - 5oDose of lignocaine for spinal anesthesia is 5 solution diluted in 7.5 dextroseoBupivacaine dose for spinal anesthesia is 0.75 solution diluted in 8.25 dextroseLocal Anesthetic Dosing for Spinal Anesthesia Suggested Dose mgDuration of Effect MinutesAnesthaticUsual ConcentrationLower extremities, perineumUpper abdomenLocal anesthetic without epinephrineLocal anesthetic with epinephrineLidocaine5 in dextrose30-5075-10060-7575-90Bupivacaine0.75 in dextrose5-1012-1790-120100-150Ropivacaine0.25-1.08-128-128-1216-1890-120Tetracaine0.5 - 1 in dextrose4-810-1690-120120-140. Epinephrine concentration 1:200,000, or 5mgmL. 