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  • Intravenous Acetaminophen Use in Postoperative Spine Patients

    Final Number:
    1451

    Authors:
    Robert K Maurer BS; Leopold Arko MD; James Choi; James Mooney; Kevin Hines; Bong-Soo Kim MD, MS

    Study Design:
    Clinical Trial

    Subject Category:

    Meeting: Congress of Neurological Surgeons 2016 Annual Meeting

    Introduction: Narcotics are the staple of post-operative analgesia; however they are not without adverse effects including nausea, vomiting, constipation and respiratory depression. Some studies have suggested intravenous acetaminophen (IV APAP) as a desirable supplement to opiate based analgesia, due to its decreased drug reaction profile. In a retrospective case-control study, we examined the effect of intravenous acetaminophen on opiate use over forty eight hours post-operatively, as well as length of hospital stay and adverse drug reactions.

    Methods: The charts of patients who received spinal surgery between 12/2011 and 8/2015 were analyzed. Three hundred and eight six (386) patients were included in the final analysis. Post-operative opioid dosages were converted to morphine equivalent doses (MED) for standardization. MED were determined for the period of 0-24 hours post-op (POD1) and 24-48 post-op (POD2).

    Results: Among those undergoing cervical procedures, length of hospital stay (LOS) and opioid usage on POD1 and POD2 were not significantly different between those receiving IV APAP and those who did not in (LOS: 5.38±0.69 vs. 6.12±0.71, p=0.48, POD1: 56.08±6.52 mg./day vs. 69.45±9.49 mg/day, p=0.32, POD2: 59.28±6.76 vs. 81.37±14.51) Similar results were observed for thoracic (LOS: 5.64±0.86 vs. 9.71±1.65, p=0.11, POD1: 97.64±14.81mg/day vs. 151.14±28.86 mg/day, p=0.23, POD2: 106.61±20.72 mg/day vs. 208.85±44.02 mg/day, p=0.13) and lumbar procedures (LOS: 4.14±0.39 vs. 3.69±0.34, p=0.40, POD1: 146.88±27.26 mg/day vs. 118.72±16.34 mg/day, p=0.32, POD2: 122.74±16.90 mg/day vs. 154.35±34.57 mg/day, p=0.82). One episode of clinically significant constipation attributed to opioids and requiring change in management was noted in the control group. No significant drug reactions were noted in the treatment group.

    Conclusions: Our study is the largest to date to examine the role of IV APAP in neurosurgical spine patients. And, although smaller studies have suggested a role for IV APAP in the management of post-op pain, we observed no evidence that IV APAP altered opioid use.

    Patient Care: lay ground work for possible clinical trials of usage of IV Acetaminophen as a narcotic adjunct. Could lead to better pain control and decrease in narcotic usage

    Learning Objectives: By the conclusion of this session, participants should be able to: 1) Describe the efficacy of IV Acetaminophen usage in post operative spine patients 2) Discuss the need for adjuncts to narcotics as pain control and need for further investigation

    References:

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