From: Effect of intravenous dexamethasone on the duration of hyperbaric bupivacaine spinal anesthesia in lower abdominal surgery, Randomized controlled trial
Dexa group
(n = 100)
Control group
P value*
Headache
29 (29%)
54 (54%)
< 0.001
Nausea
64 (64%)
Vomiting
30 (30%)
56 (56%)