From: Comparison of low-dose morphine intrathecal analgesia and sufentanil PCIA in elderly patients with hip fracture undergoing single spinal anesthesia — a randomized clinical trial
Adverse reactions
Group M (n = 35)
Group S (n = 33)
Nausea/ vomiting
4 (11.43)
3 (9.09)
Pruritus
8 (22.86) ▲
2 (6.06)
Sedation/drowsiness
3 (8.57)
POD
2 (5.71) ▲
6 (18.18)
Respiratory depression