What precaution should be taken when performing a cervical plexus block?

When performing a cervical plexus block, avoiding injections too close to the spinal canal is crucial to prevent complications. The cervical plexus is located in proximity to the spinal column, and improper placement of the needle can lead to complications such as intrathecal injection, which may cause severe neurological deficits or adverse effects due to the delivery of local anesthetic directly into the cerebrospinal fluid. Additionally, there is a risk of damaging nearby structures, including the spinal cord and vertebral artery, which could result in serious or even life-threatening consequences.

Proper anatomical knowledge and careful technique are essential to ensure safety. Techniques such as using ultrasound guidance can enhance the accuracy of the block by ensuring that needle placement is optimal and reducing the risk of complications associated with blind injections. Therefore, understanding the need for careful injection site selection significantly contributes to the safety and efficacy of the procedure.