Patient‐controlled infusion‐demand analgesia was studied using alfentanil. We were unable to identify an optimal dose and administration rate; doses required range from 100 to 900 μg alfentanil. The mean concentration of alfentanil in blood associated with return of pain (i.e. immediately before demand) was 58 ng/ml on day 1 and 37 ng/ml on day 2. This difference was despite similar drug consumption on both days.
|Number of pages||4|
|Publication status||Published - Jun 1990|
- Analgesics, narcotic; alfentanil
- Pain; postoperative