Hyperbaric versus plain bupivacaine for spinal anesthesia for cesarean delivery

Area of Science:

• Anesthesiology
• Obstetrics
• Pharmacology

Background:

• Bupivacaine, an amide local anesthetic, is used in hyperbaric and plain forms for spinal anesthesia in cesarean delivery.
• Systematic review assessing hyperbaric versus plain bupivacaine effectiveness and safety for cesarean delivery anesthesia.

Purpose of the Study:

• To systematically review and summarize the evidence comparing hyperbaric and plain bupivacaine for spinal anesthesia in cesarean delivery.
• To evaluate anesthesia adequacy and the need for interventions for complications.

Main Methods:

• Searched CENTRAL, MEDLINE, and EMBASE databases without language restriction.
• Included randomized controlled trials comparing hyperbaric and plain bupivacaine for spinal anesthesia in elective cesarean delivery.

Main Results:

• Included 6 studies with 394 patients; studies had small sample sizes and methodological differences.
• Insufficient data and risk of bias assessment prevented pooled estimates.
• No compelling evidence supports the superiority of intrathecal plain or hyperbaric bupivacaine for cesarean delivery spinal anesthesia.

Conclusions:

• Lack of clear evidence on hyperbaric versus plain bupivacaine superiority for spinal anesthesia in cesarean delivery.
• Current data are insufficient to compare these bupivacaine formulations regarding conversion to general anesthesia due to failed spinal anesthesia.
• Further research is required to clarify the optimal bupivacaine formulation for this indication.