>Dose (mgs) of agents in lateral position @ L2-3*

Height (cms) 150 157.5 165 172.5
(5ft) (5ft 3in) (5ft 6in) (5ft 9in)
Cesarean Section**
Lidocaine 50 60 70 80
Bupivacaine 8 9 10 11
Tetracaine 8 9 10 11
Post-partum TL***
Lidocaine 65 75 85 100
Bupivacaine 10 11 12.5 13.5
Tetracaine 10 11 12.5 13.5
* Add more local anesthetic in the sitting position or the use of L3-4 interspace (e.g., 1.5 mg bupivacaine or equivalent for either situation).

** Add 0.2 mg morphine for intra- and postoperative analgesia, and 0.2 mg epinephrine for intensifying and prolonging the block.

*** Add morphine only because it is a relatively short procedure. Morphine improves the quality of the block and provides postoperative analgesia.