Update on scalp nerve block for craniotomy

SNBs should be considered a low risk, technically easy to perform, and highly effective regional anesthesia technique in a wide range of neurosurgical procedures. A long-acting local anesthetic such as ropivacaine, bupivacaine, or levobupivacaine is recommended, and the addition of an adjuvant such as dexmedetomidine, clonidine, or dexamethasone has been shown to prolong the duration of the block. Ultrasound may be useful addition to improve block success.