Publications

Purpose To evaluate whether use of dexmedetomidine, a centrally acting α2 adrenergic agonist, reduces opioid consumption
in PSF.
Methods Adolescent idiopathic scoliosis patients who underwent PSF were randomized into morphine (M) and dexmedetomidine
(D) group. M group received a 10 μg/kg/h IV infusion of morphine for 24 h post-surgery, while the D group received
a 0.4 μg/kg/h IV infusion of dexmedetomidine. Trained nursing staffs recorded hourly vital parameters (blood pressure, pulse
rate, respiratory rate, and oxygen saturation). Pain, postoperative nausea/vomiting (PONV), and sedation were rated using:
the numerical rating scale (NRS), the PONV scale, and sedation status scale (SS). Preemptive analgesia with gabapentin
and postoperative analgesia with ketorolac and paracetamol were used in both the groups. Any complications in the study
groups were recorded.
Results No significant difference was noted between the groups (M vs D) with respect to NRS (3.1 ± 0.8 vs 2.7 ± 0.5)
(p = 0.07) and breakthrough analgesia requirements (0.78 vs 0.45) (p = 0.17). A significant difference was noted between
the groups with respect to the secondary outcome measures of time to ambulation (56.6 ± 12.7 h vs 45.2 ± 7.7 h), time
to oral analgesics (84.3 ± 20 h vs 64.0 ± 15.4 h), and time to liquid intake (8.3 ± 1.3 h vs 7.2 ± 1.2 h). The M group had a
higher PONV score (0.46 ± 0.3 vs 0.16 ± 0.1) (p < 0.001) and mean time to bowel opening (112.7 ± 28.4 h vs 90.1 ± 20.5 h)
(p < 0.001). Additionally, the enema or suppository requirements for bowel opening were significantly more (0.59 ± 0.6 vs
0.26 ± 0.4) (p = 0.01) in the M group.
Conclusion Dexmedetomidine provided analgesia comparable to morphine with lower PONV scores. It also reduced the
opioid requirements in the PSF patients without additional complications and can therefore be incorporated in pain management
protocols.
Keywords Pain management · Scoliosis · Dexmedetomidine · Adjunctive medications · Preemptive analgesia ·
Multimodal · Pediatric