#126 – The Opioid-Sparing Opioid – how to master perioperative methadone

My guests today are Abigail Lee and Johanna Bennett, two Doctor of Nursing Practice graduate students at the University of New England who focused their DNP project on perioperative use of IV methadone.

Abigail Lee attended Southern Maine Community College and transferred to the University of Southern Maine to study nursing. She worked at Maine Medical Center in the Cardiothoracic Intensive Care Unit. She intends to head down to North Carolina to work as a CRNA.

Johanna Bennett went to Saint Anselm College. She started her career in healthcare in the Medical/COVID ICU as a new graduate nurse and worked there for three years before starting CRNA school at the University of New England. Jo will be joining our team at Maine Medical Center to work as a CRNA.

This episode is on the longer side, so here’s your TL:DL, too-long; didn’t listen summary of perioperative IV methadone – the opioid-spairing opioid.

Standard short-acting pure mu-agonists—like fentanyl, hydromorphone, and morphine—often leave our patients trapped in a roller coaster of ‘peaks and valleys,’ leading to oversedation, unexpected pain spikes, and high total opioid consumption in the PACU.

In this episode, we explore why methadone is uniquely positioned as the ‘opioid-sparing opioid.’ Beyond its strong -receptor agonism, methadone boasts NMDA receptor antagonism and serotonin/norepinephrine reuptake inhibition, targeting pain at multiple pathways to blunt central sensitization and wind-up phenomenon.

Key Clinical Takeaways from the Literature:

The Effective Dose: An ideal single dose on induction is 0.2 to 0.25 mg/kg ideal body weight (or roughly 10-20 mgIV). Underdosing (<0.1 mg/kg) eliminates the long-term benefit, while dosing over 0.3 mg/kg slightly increases transient PACU sedation without adding extra analgesia.

Where it Shines: Greatest reductions in PACU pain scores and overall post-op opioid consumption occur in high-nociceptive surgeries—like multi-level spinal fusions, cardiac, thoracic, and major reconstructive procedures.

Safety Profile: A single intraoperative dose displays a safety profile comparable to short-acting opioids—with no increased incidence of delayed respiratory depression, PONV, or QT prolongation in acute, single-dose settings.

I want to share one particular guideline that I’m familiar where the hospital developed a clinical guideline to help their team incorporate IV methadone as a perioperative analgesic.

The key points in this guideline include: