“Scalp block with a mixture of lidocaine and ropivacaine seems to provide effective and safe anesthetic management in patients undergoing awake craniotomy.”

Comment: Be aware of the doses of local anesthetics that you are using.

Efficacy and Safety of a Lidocaine and Ropivacaine Mixture for Scalp Nerve Block and Local Infiltration Anesthesia in Patients Undergoing Awake Craniotomy. Chaki et al, Japan. Journal of Neurosurgical Anesthesiology, 2016 Jan. Find the abstract here.