Lidocaine Use in Vaginal Surgery and Risk of Toxicity

Area of Science:

• Obstetrics and Gynecology
• Anesthesiology
• Surgical Oncology

Background:

• Lidocaine is commonly used for local anesthesia in gynecological procedures.
• Vaginal reconstruction and hysterectomy are complex procedures that may require significant anesthetic support.
• Understanding lidocaine dosage is crucial for patient safety and effective pain management.

Purpose of the Study:

• To compare lidocaine administration in vaginal reconstruction with versus without hysterectomy.
• To assess the risk of lidocaine toxicity in these patient groups.

Main Methods:

• A retrospective cohort study compared two groups: vaginal hysterectomy with vaginal reconstruction (VH + VR) and vaginal reconstruction only (VR only).
• Total lidocaine dose (intravenous and injected) was recorded.
• Lidocaine toxicity was defined as a total dose > 7 mg/kg.

Main Results:

• The VH + VR group received significantly more total lidocaine (228 ± 105 mg) than the VR only group (168 ± 78 mg).
• This difference was primarily due to higher vaginally injected lidocaine doses.
• Two patients in the VH + VR group experienced lidocaine toxicity.

Conclusions:

• Concomitant vaginal hysterectomy increases the total lidocaine dose required for vaginal reconstruction.
• The risk of lidocaine toxicity is elevated when hysterectomy is performed alongside vaginal reconstruction.