» Articles » PMID: 37737686

Intravenous Ketorolac Substantially Reduces Opioid Use and Length of Stay After Lumbar Fusion: A Randomized Controlled Trial

Abstract

Study Design: A randomized, double-blinded, placebo-controlled trial.

Objective: To examine the effect of intravenous ketorolac (IV-K) on hospital opioid use compared with IV-placebo (IV-P) and IV acetaminophen (IV-A).

Summary Of Background Data: Controlling postoperative pain while minimizing opioid use after lumbar spinal fusion is an important area of study.

Patients And Methods: Patients aged 18 to 75 years undergoing 1 to 2 level lumbar fusions between April 2016 and December 2019 were included. Patients with chronic opioid use, smokers, and those on systemic glucocorticoids or contraindications to study medications were excluded. A block randomization scheme was used, and study personnel, hospital staff, and subjects were blinded to the assignment. Patients were randomized postoperatively. The IV-K group received 15 mg (age > 65) or 30 mg (age < 65) every six hours (q6h) for 48 hours, IV-A received 1000 mg q6h, and IV-P received normal saline q6h for 48 hours. Demographic and surgical details, opioid use in morphine milliequivalents, opioid-related adverse events, and length of stay (LOS) were recorded. The primary outcome was in-hospital opioid use up to 72 hours.

Results: A total of 171 patients were included (58 IV-K, 55 IV-A, and 58 IV-P) in the intent-to-treat (ITT) analysis, with a mean age of 57.1 years. The IV-K group had lower opioid use at 72 hours (173 ± 157 mg) versus IV-A (255 ± 179 mg) and IV-P (299 ± 179 mg; P = 0.000). In terms of opiate use, IV-K was superior to IV-A ( P = 0.025) and IV-P ( P = 0.000) on ITT analysis, although on per-protocol analysis, the difference with IV-A did not reach significance ( P = 0.063). When compared with IV-P, IV-K patients reported significantly lower worst ( P = 0.004), best ( P = 0.001), average ( P = 0.001), and current pain ( P = 0.002) on postoperative day 1, and significantly shorter LOS ( P = 0.009) on ITT analysis. There were no differences in opioid-related adverse events, drain output, clinical outcomes, transfusion rates, or fusion rates.

Conclusions: By reducing opioid use, improving pain control on postoperative day 1, and decreasing LOS without increases in complications or pseudarthrosis, IV-K may be an important component of "enhanced recovery after surgery" protocols.

References
1.
Evans C, Butcher C . The influence on human osteoblasts in vitro of non-steroidal anti-inflammatory drugs which act on different cyclooxygenase enzymes. J Bone Joint Surg Br. 2004; 86(3):444-9. DOI: 10.1302/0301-620x.86b3.14592. View

2.
Bellantonio D, Bolondi G, Cultrera F, Lofrese G, Mongardi L, Gobbi L . Erector spinae plane block for perioperative pain management in neurosurgical lower-thoracic and lumbar spinal fusion: a single-centre prospective randomised controlled trial. BMC Anesthesiol. 2023; 23(1):187. PMC: 10227393. DOI: 10.1186/s12871-023-02130-z. View

3.
Lumawig J, Yamazaki A, Watanabe K . Dose-dependent inhibition of diclofenac sodium on posterior lumbar interbody fusion rates. Spine J. 2008; 9(5):343-9. DOI: 10.1016/j.spinee.2008.06.455. View

4.
Fogarty D, OHanlon J, Milligan K . Intramuscular ketorolac following total hip replacement with spinal anaesthesia and intrathecal morphine. Acta Anaesthesiol Scand. 1995; 39(2):191-4. DOI: 10.1111/j.1399-6576.1995.tb04041.x. View

5.
YaDeau J, Liu S, Rade M, Marcello D, Liguori G . Performance characteristics and validation of the Opioid-Related Symptom Distress Scale for evaluation of analgesic side effects after orthopedic surgery. Anesth Analg. 2011; 113(2):369-77. DOI: 10.1213/ANE.0b013e31821ae3f7. View