Perioperative Gabapentin Management

Introduction to Gabapentin Use

The ERAS Society recommends gabapentinoids as pre-anesthetic medication for opioid-sparing effects 1
Limit to a single preoperative dose to minimize sedation, dizziness, and visual disturbances while maintaining opioid-sparing benefits 1
Use the lowest effective dose to reduce adverse effects, with dose adjustment for elderly patients and those with renal dysfunction 1

Typical preoperative doses range from 300-1200 mg, with evidence supporting efficacy at 900 mg or higher 2
Administer the lowest effective dose to reduce adverse effects, with dose adjustment for elderly patients and those with renal dysfunction 1

Single preoperative gabapentin doses (300-1200 mg) significantly reduce postoperative pain scores and morphine consumption in the first 24 hours 3, 4
Effective for reducing acute postoperative pain with opioid-sparing effects 5, 6
May reduce chronic postoperative neuropathic pain when continued postoperatively (19.6% vs 41.3% in control) 3, 4

Systematic use of gabapentinoids preoperatively is not recommended as routine practice for all surgical patients 2
Gabapentinoids should be reviewed and tapered postoperatively if no longer indicated 7
For opioid-tolerant patients, gabapentin may be part of multimodal analgesia but should not replace comprehensive pain management 7, 6

Avoid benzodiazepines concurrently, as they potentiate sedative effects 1
Continue chronic gabapentin therapy at the patient's established dose to maintain pain control and avoid withdrawal symptoms in patients with neuropathic pain 7

The ERAS Society recommends gabapentinoids as pre-anesthetic medication for opioid-sparing effects, administered orally before surgery 8, 9
Gabapentin should be administered preoperatively as part of multimodal opioid-sparing analgesia, with timing optimized to achieve peak effect at surgery onset 8
Gabapentin can be taken with a small sip of water (typically 30-50 mL) even when NBM, as this minimal fluid volume does not increase aspiration risk 8

For debridement surgery, administer gabapentin 2 hours before the procedure to achieve optimal pharmacodynamic effect 8
The American College of Surgeons and other societies support the use of gabapentin as part of a multimodal approach to pain management, as recommended by the ERAS Society 8, 9

Muscle relaxants are not part of evidence-based perioperative protocols and are not mentioned in ERAS guidelines 8, 9
Unlike gabapentin, muscle relaxants do not have documented withdrawal seizure risk and are not critical for multimodal analgesia 8
Muscle relaxants may contribute to postoperative sedation without clear analgesic benefit 8

The PROSPECT guidelines for total hip arthroplasty (applicable to total knee arthroplasty) indicate that repeated peri‑operative doses of gabapentinoids can reduce pain but are not recommended for routine use because of clinically relevant side‑effects when the drugs are initiated de novo. 10
This recommendation applies only to new peri‑operative initiation of gabapentinoids and does not extend to continuation of a patient’s established chronic gabapentin regimen. 11

Peri‑operative side‑effects of gabapentinoids (e.g., dizziness, sedation, visual disturbances) are primarily linked to new initiation or dose escalation, not to stable chronic dosing. 10
A frequent pitfall is to misapply the guideline against routine peri‑operative gabapentinoid use to patients already on chronic therapy; the evidence against routine use concerns only new starts, not continuation of existing therapy. 11

After surgery, clinicians should monitor pain control and watch for side‑effects such as sedation and dizziness, adjusting the gabapentin dose only if clinically necessary. 10