That's all the papers I pulled, because there are tons and a lot are poor quality. My summary is that
multimodal analgesia is still strongly supported in principle — I do it, and I think we've all bought into
the concept — but the data is only moderate at best, and it's becoming clearer that not all adjuncts are
equal. NSAIDs appear most efficacious at both reducing opioid use and the need for rescue medications.
Ketamine decreases pain scores but doesn't reduce the need for rescue medications. Dexmedetomidine,
another adjunct we've included, is tempered by increased PACU stay and unclear benefit. The new adult
trial doesn't show IV lidocaine is helpful. Of the other adjuncts — magnesium, gabapentin, clonidine —
gabapentin is really falling out of favor, even though it was in every ERAS pathway for orthopedics in the
adult world for a long time; it's not showing much help, and there's not a lot of data for clonidine either.
When we get down to pediatrics, there's even less to go by. Regional anesthesia works — we can all
agree — and decreases opioid consumption, and our ERAS protocols likely work if we actually do them.
00:52 – Morgan Brown (Boston Children's):
There are a lot of limitations: linking all this to outcomes is tricky; most pain studies just look at opioid
consumption, not pain relief or functional recovery, because that's harder. Most studies look at a single
drug versus placebo, not groups of medications and how they interact — and those recent Canadian
trials showing you don't get a lot of bang for your buck once you add other things are very intriguing. A
lot of the pediatric studies focus on three procedures — tonsillectomy, scoliosis, or inguinal surgery —
and leave out a lot; there's a little in cardiac surgery, but not much. There's very little data on neonates
or infants, and not a lot on the side effects of polypharmacy. Next slide.
00:53 – Morgan Brown (Boston Children's):
Going back to how our current peds metric is built, we've excluded a lot of cases, which I agree with, and
I can't imagine changing most of these. The only thing I'll suggest, once we get to recommendations, is
that there's no reason cardiac shouldn't be included in this metric. Historically cardiac was high-narcotic
for everybody with no adjuncts, but now that people are extubating patients in the OR, it would be
reasonable to keep the existing exclusion for extubated patients — meaning if you're intubated and go
to the ICU you're not included — but whether those ICU patients should also get multimodal analgesia is
a topic for another day. For today I didn't question that. Next slide.
00:54 – Morgan Brown (Boston Children's):
To succeed on this metric you have to have given a dose of something — acetaminophen, NSAIDs,
ketamine, clonidine, or dexmedetomidine. Dexamethasone is a possible adjunct but was previously
removed, because people often give dexamethasone for nausea and vomiting, which confounds the
metric and would probably give everybody 100% — rewarding, but not the point. The center also went
to a fair bit of work so that IV lidocaine infusion would count as an alternative to a regional technique.
Personally, after reading the adult study, I would remove that, because the data is weak at best and it
was a negative study. Next slide.
00:55 – Morgan Brown (Boston Children's):
If you look at this, people generally do really well on this metric, which raises the question: if everyone's
doing so well, it becomes less valuable. I still think there's some utility at present, but we should think
about this going forward — if everyone gets 100%, we need something different. That's where the topic
of needing an outcome-based metric for pain, which we've talked about briefly, comes in. Next slide. We
can go to the sheet. The suggestions I had for modifications were: remove the cardiac exclusion —
getting extubated after a cardiac case doesn't mean you shouldn't get multimodal analgesia; consider
removing IV lidocaine — and in general, if people are running an IV lidocaine infusion they're highly
likely to give another adjunct, so they'd probably pass anyway; and leave everything else alone for now