thank u for replies
but some of them a little strange (im saying it with all due respect of course)
for example jeff05 stays:spinal only an hour----actually sacral block lasts 5 h at least ,but in our case its indefinite--its supported by ebidural pump thru dural puncture (please look up harvard studies dp technique)
jeff05 mentions "profound hypotension" --if sacral block is done with hyperbaric bup its not possible to have hypotension---pt sits up for 7 min
jeff05 "for visceral pain"---sacral block for 2nd stage of labor ,not for visceral pain
u can not get respiratory depression on this dose of epidural morphine-(by the way does anybody know on what dose of epidural morphine we can expect resp dep ? )
last dose of epid morphine is safe because it is actually discontinuation of 3 days regimen that was observed for 3 days, not a new dose for opioid naive pt
jeff05 sounds like a student
not that it matters, but i'm an attending. lets address some of your basic disconnects with actual clinical practice (harvard studies aside).
#1. 3.75mg of bupiv definitely does NOT last for 5 hours. I do spinals with 15mg for c/s and patients have complete regression of the block within 2-3 hours.
#2. "you can't get respiratory depression on this dose of morphine?" well, i would hate to disclose that i'm also pain fellowship trained. You can absolutely get respiratory depression with those doses of epidural morphine. At our institution we have 24 frequent respiratory checks after a one time dose of 4mg. in your situation, there may be a cumulative effect in some slow metabolizers and opiate sensitive patients. it only takes ONE respiratory arrest of an otherwise healthy postpartum patient to change a liberal policy.
#3. you mean the harvard study that showed increased rates of c/s, increased rates of instrumented delivery, and decreased rate of SVD? As well as no statistical difference in most meaningful categories.
Oh, as well as the complete non-real world approach of using a larger spinal needle and NOT actually doing a spinal (which in any world achieves faster analgesia vs epi).
#4. you are right that dose of bupiv is unlikely to cause hypotension. But, again, it may. Bupiv spinals take longer than 7 minutes to set (anyone who has done a significant amount of OB anes knows this as everyone is standing around and you're putting the table in Trend to get the drug to a higher thoracic level.
#5. visceral pain is usually discussed as being primarily an issue during the 1st stage of labor, however it is absolutely an issue during the second stage, as well. adding opioid to local anesthetic during the second stage helps to: decrease risk of systemic toxicity, decreased plasma concentrations in neonate, decrease motor block, decreases motor block (prolongs second stage and possibly instrumentation).
#6. not sure why your OBs are fisting their patients...(50% repair rate!?)
#7. based on your poor command of the english language, would you mind sharing what 2nd -world- eastern- european- pseudo-communist poly-clinic you work in?