Which complication is commonly associated with nerve blocks using local anesthetics?

Nerve injury is a notable complication associated with nerve blocks using local anesthetics due to the proximity of the needle to critical neural structures. During the procedure, if the needle inadvertently touches or penetrates the nerve sheath, it can cause damage to the nerve itself. This may lead to symptoms such as pain, numbness, or weakness in the distribution of the affected nerve.

The risk of nerve injury can be influenced by various factors, including the location of the injection, the technique utilized, and the type of local anesthetic agent employed. Moreover, understanding nerve anatomy and employing ultrasound guidance can significantly minimize this risk during the procedure.

Though other complications such as infection, hemorrhage, and local swelling can occur, the incidence of nerve injury is particularly relevant when considering the long-term effects and potential for permanent damage following regional anesthesia. Thus, recognizing nerve injury as a common complication emphasizes the importance of careful technique and patient monitoring in anesthetic practice.