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Appendectomy in rabbits with extended unilateral anesthesia
Toshiyuki Saito1, Kumiko Tanuma, Yutaka Tanuma
1Department of Anatomy, Nippon Medical School, 1236-7 Kagawa, Chigasaki-City, Kanagawa 253-0082, Japan.
Experimental Animals
|March 2, 2002
Summary
Thoracic paravertebral anesthesia can extend analgesia to the lumbar region, a novel finding termed extended unilateral anesthesia. This technique was successfully used for appendectomy in rabbits, showing potential for future medical applications.
Area of Science:
- Anesthesiology
- Veterinary Surgery
Background:
- Thoracic paravertebral anesthesia traditionally targets the thoracic region.
- Lumbar nerve region numbness was not previously associated with thoracic paravertebral anesthesia.
Purpose of the Study:
- To investigate the potential of thoracic paravertebral anesthesia to induce analgesia in the lumbar region.
- To evaluate the efficacy of this extended unilateral anesthesia in a surgical model.
Main Methods:
- A catheter was placed in the paravertebral region at the 11th thoracic vertebra in rabbits.
- Repeated injections of 2% mepivacaine were administered.
- Appendectomy was performed under the induced anesthesia.
Main Results:
- Extended unilateral anesthesia resulted in unilateral motor and sensory paralysis from the chest to the lower limb.
- Successful completion of appendectomy in rabbits using this technique.
Conclusions:
- Thoracic paravertebral anesthesia can indeed produce extended unilateral anesthesia, affecting the lumbar region.
- This novel anesthesia technique was effectively applied to appendectomy in rabbits.
- Potential benefits for future medical and veterinary surgical procedures.