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A member asked:
How many (rough) hours would it take for an 88 yr man (with 15% kidney function) to wake up after given fentanyl 25 mcg (for 3 times)?
6 doctors weighed in across 3 answers
Maybe longer: I have seen the effects last upto three days in an older patient with kidney failure.
Answered 7/2/2012
5.8k views
Variable: Fentanyl is not excreted by the kidneys, but older patients can be pretty sensitive. It may take an hour or more, but really depends on individual pharmakinetics.
Answered 8/5/2015
5.5k views
75 mcg of fentanyl: Is not a big dose for a normal sized adult (about 1mcg/kilo). I imagine that, unless it is combined with other meds, or the patient is otherwise debilitated, that this dose would sedate, but not knock out such a patient. It would take an hour or two to feel normal after this dose.
Answered 2/22/2014
5.5k views
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