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Transdermal fentanyl: pharmacokinetics and preliminary clinical evaluation
P M Plezia1, T H Kramer, J Linford
1Department of Pharmacy Practice, College of Pharmacy, University of Arizona, Tucson 85721.
Pharmacotherapy
|January 1, 1989
Summary
A novel transdermal fentanyl system offers effective postoperative pain relief for orthopedic surgery patients. This fentanyl patch provides sustained analgesia with minimal adverse effects, showing promise as a safe alternative to traditional pain management.
Area of Science:
- Pharmacology
- Drug Delivery Systems
- Pain Management
Background:
- Postoperative pain management often relies on conventional opioid administration.
- Transdermal drug delivery offers potential for sustained release and improved patient compliance.
- Fentanyl is a potent synthetic opioid used for managing moderate to severe pain.
Purpose of the Study:
- To evaluate a new transdermal fentanyl drug-delivery system for postoperative pain control.
- To assess the pharmacokinetics and safety of transdermal fentanyl in orthopedic surgery patients.
- To determine the efficacy of transdermal fentanyl in providing analgesia and identify potential adverse effects.
Main Methods:
- Eight orthopedic surgery patients received a transdermal fentanyl system for 24 hours postoperatively.
- Pharmacokinetic analysis was performed on plasma samples collected over 72 hours from five patients.
- Patients were monitored for pain relief, nausea, sedation, and respiratory depression.
Main Results:
- A median lag time of 2.25 hours was observed before fentanyl appeared in blood.
- Median peak fentanyl concentration was 1.0 ng/ml at 22 hours.
- Prolonged fentanyl absorption, resembling slow elimination, was noted, with no significant toxicities observed and four patients requiring no additional analgesia.
Conclusions:
- Transdermal fentanyl administration is a viable alternative to conventional opioid routes for postoperative pain.
- The system demonstrates sustained drug delivery and effective analgesia with a favorable safety profile.
- Further research is warranted to fully explore the potential of transdermal fentanyl in clinical practice.
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