Abstract
(Anesth Analg. 2018;127:171–178) A major limitation of spinal anesthesia is that the duration of the anesthetic may not be adequate in the event of a prolonged surgery. Bupivacaine without an adjuvant provides ∼120 minutes of surgical anesthesia. Epinephrine added to lidocaine or tetracaine can increase the block’s duration as much as 2-fold. However, less is known about the prolongation of spinal block when epinephrine is added to bupivacaine. In the present study, the authors evaluated whether the addition of subarachnoid epinephrine to bupivacaine and morphine would prolong the duration of surgical anesthesia for repeat cesarean delivery as measured by the time to T-10 regression or activation of the epidural for patient comfort.
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