Continuous infusion of alfentanil

Area of Science:

• Anesthesiology
• Pharmacology

Background:

• Continuous infusion of alfentanil is an alternative to incremental dosing for anesthesia.
• Optimizing analgesic regimens is crucial for patient recovery and satisfaction.

Purpose of the Study:

• To evaluate the efficacy and safety of continuous alfentanil infusion as a supplement to nitrous oxide anesthesia.
• To compare the effects of droperidol and domperidone on alfentanil's efficacy and postoperative outcomes.

Main Methods:

• A study involving 51 patients undergoing short-lasting anesthesia.
• Alfentanil administered via continuous infusion (4 mg/hr or 5 mg/hr) with a bolus injection, supplemented with either droperidol or domperidone.
• Anesthesia induced with thiopental.

Main Results:

• Continuous alfentanil infusion (4 mg/hr) provided effective basic analgesia with shorter awakening times and reduced analgesic needs compared to incremental doses.
• Droperidol significantly potentiated alfentanil's effects and nearly abolished postoperative nausea and vomiting.
• Domperidone showed little to no effect on postoperative nausea and vomiting.

Conclusions:

• Continuous alfentanil infusion is a viable method for achieving adequate analgesia during short anesthesias.
• Droperidol is a useful adjunct to continuous alfentanil infusion for enhancing analgesia and managing postoperative nausea and vomiting.
• Domperidone is not recommended for managing postoperative nausea and vomiting in this context.