Epidural pethidine or fentanyl during caesarean section: a double-blind comparison

Area of Science:

• Anesthesiology
• Obstetrics
• Pharmacology

Background:

• Epidural analgesia is commonly used for caesarean sections.
• Pethidine and fentanyl are opioid analgesics used in obstetric anesthesia.
• Optimizing intraoperative pain management is crucial for patient outcomes.

Purpose of the Study:

• To compare the onset, quality, and duration of analgesia, as well as side effects, of epidural pethidine versus fentanyl administered post-delivery.
• To evaluate the clinical advantage of fentanyl over pethidine for intraoperative caesarean section analgesia.

Main Methods:

• A randomized, double-blind study involving fifty-five women undergoing epidural caesarean section.
• Comparison of a single bolus dose of epidural pethidine 50 mg versus fentanyl 100 mcg, administered immediately post-delivery.
• Assessment of analgesia onset, quality, duration, and side effects.

Main Results:

• Fentanyl demonstrated a significantly more rapid onset of analgesia (P < 0.05).
• Both pethidine and fentanyl provided good quality and duration of effective analgesia, with no significant differences between groups.
• The incidence and severity of side effects were low and comparable between the two groups. One case of early respiratory depression occurred in the pethidine group but required no active treatment.

Conclusions:

• Epidural fentanyl 100 mcg offers a slight clinical advantage over pethidine 50 mg for intraoperative analgesia during caesarean section due to its faster onset.
• Both agents are effective and well-tolerated, with low incidences of side effects.
• Fentanyl's rapid onset may be beneficial for immediate intraoperative pain control in caesarean delivery.