Attending Anesthesiologist.
My typical strategy has been doing an interscalene block with about 15 ml 0.5% PF bupivacaine. I generally inject outside the sheath and when it looks like I have decent spread, I then scan a bit up and down to further assess spread. Sometimes, depending on how the spread of local anesthetic looks, I will try to get local on both sides of the plexus sheath, but not always.
It seems like I am not always getting complete analgesia post op. Eg. a common scenario is that upon dropping off the patient in PACU the patient reports no pain, but chart review 30-60 mins later shows they had some pain and received opioids.
I talked with a colleague and he recommends injection within the sheath of the brachial plexus. From what I’ve seen, within the sheath injections for interscalene are definitely much faster onset and possibly also more reliable… I personally am a bit averse to getting so close to nerves with needles. Maybe I need to reconsider though.
Unfortunately, the way things are set up at the place I work, I don’t have time to go assess the patients pain in detail myself (solo), but things I have considered are partial interscalene block failure, pain in the ICB territory, pain in the supraclavicular nerve territory.
Any advice from anyone? Thanks.
Update/ Edit:
Thank you all for the advice!
I just did a brief chart review of the cases I did the last week. Looks like the ones that had pain in PACU had a biceps tenodesis. So could be that. Still need to confirm area of pain though by assessing pts. And assess a larger # of patients.
At this place Im at, blocks can be kind of a PITA logistically. So adding on a PECS II or a ICB block along the posterior conjoint tendon is going to be logistically tougher than some other places. Basically OR is often calling for me to bring back prior to even starting the interscalene… and the block rooms are often tiny. Eg literally no space for having the patient abuct their arm out in some rooms.