Liposomal bupivacaine plus intrathecal hydromorphone associated with shortened length of stay and decreased opioid use in pediatric patients following posterior spinal fusion surgery

We aimed to determine if the use of intrathecal (IT) hydromorphone and/or liposomal bupivacaine (LB) decreased the amount of postoperative and post-discharge opioids for pediatric patients undergoing fusion (PSF) surgery to treat adolescent idiopathic scoliosis (AIS).

A retrospective review of AIS patients undergoing PSF surgery was conducted. Hospital LOS, and inpatient and post-discharge opioid use were compared. Opioid use was reported as oral morphine equivalents (OMEs).

Three groups were formed from 186 patients: the control (CG) (n = 39), the IT hydromorphone only (IT) (n = 58), and the liposomal bupivacaine with intrathecal hydromorphone (LB + IT) group (n = 89). The mean LOS were 4.8, 4.2, and 3.5 days for the CG, IT, and LB + IT groups, respectively, with the LB + IT group being shorter than both the CG (p < 0.001) and IT groups (p < 0.001). The mean inpatient OMEs were 106.3/day, 69.2/day, and 30.0/day for the CG, IT, and LB + IT groups, respectively, with each group being significantly different than each other (all pairwise comparisons, p < 0.001). The mean total OMEs that patients were prescribed post-discharge were 693.6 in the CG, 581.1 in the IT, and 359.4 in the LB + IT group (F(2,183) = 14.5, p < 0.001), with the LB + IT group being prescribed significantly less than both the IT (p = 0.003) and CG groups (p < 0.001).

Both the use of IT hydromorphone and LB were associated with shortened LOS and fewer total and per day in-hospital OMEs; however, the group who received both IT and LB (LB + IT) had the greatest decrease in LOS, and both inpatient and post-discharge OME usage.

Level III (retrospective comparative study).