How much lidocaine is typically administered above and below each transverse process during a distal paravertebral block?

• A. 10 ml
• B. 15 ml
• C. 20 ml
• D. 25 ml

Answer: (B)

In the context of performing a distal paravertebral block, the administration of lidocaine is crucial for effective anesthesia of the targeted area. This technique is typically used to provide anesthesia for surgical procedures or diagnostic work in food animals, particularly in the flank and abdominal regions.

The standard volume of lidocaine that is administered above and below each transverse process during this block is generally around 15 ml. This volume is effective for achieving adequate local anesthesia by ensuring that sufficient anesthetic agent diffuses around the nerves located in the paravertebral region. Administering this volume distributes the lidocaine effectively to block the sensory nerves supplying the targeted area, leading to successful anesthesia for the intended procedure.

Volumes significantly higher or lower than this can impact the efficacy and safety of the procedure, potentially leading to inadequate anesthesia or increased risk of side effects. Therefore, the use of 15 ml aligns with standard veterinary practices and techniques, making it the preferred choice for this scenario.