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Updated: May 25, 2026

Spinal Sonography for Ultrasound-Guided Lumbar Neuraxial Anesthesia
Published on: January 31, 2025
[Regional anaesthesia in obese patient]
1Pôle d'anesthésie et réanimation, service orthopédie, CHU Purpan, place Dr-Baylac, TSA40031, 31059 Toulouse cedex 9, France. fuzier.r@gmail.com
Regional anaesthesia offers an alternative to general anaesthesia for obese patients, but requires careful consideration of specific techniques and potential complications. Ultrasound guidance may improve outcomes.
Area of Science:
- Anesthesiology
- Obesity Medicine
Background:
- Obesity presents unique challenges for anesthetic management.
- Regional anesthesia techniques are increasingly considered for obese patients.
Purpose of the Study:
- To review the specificity and application of regional anesthesia techniques in obese patients.
- To analyze the advantages, drawbacks, and risks associated with these techniques.
Main Methods:
- Literature search of Medline database using keywords: obesity, peripheral nerve block, spinal anesthesia, epidural, morbidity, mortality.
- Selection of recent original articles, reviews, and relevant case reports.
- Analysis of techniques for their suitability in obese individuals.
Main Results:
- Techniques minimizing patient mobilization are preferred.
- Skin landmark identification can be difficult for both central and peripheral blocks.
- Ultrasound may enhance block performance, though deep fat layers can impede sound penetration.
- Obese patients may experience increased success rates and complication incidence with regional anesthesia.
- The optimal intrathecal local anesthetic dose remains debated.
Conclusions:
- Regional anesthesia can be a viable alternative to general anesthesia, potentially reducing cardiorespiratory complications.
- Specific considerations and adaptations are crucial for successful regional anesthesia in obese patients.
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