This book discusses the various characteristics and applications of local anesthetics in surgical operations. Local anesthetics have become highly significant for various surgeries. The lower side effect of local anesthesia like neuroaxial and field block anesthesia, as compared to general anesthesia, has made it a suitable option for surgeons, especially in outpatient and day care surgeries. However, it is extremely necessary for an anesthesiologist to be present, and to carefully monitor the homodynamic framework, so as to reduce the anxiety of the patient, to apply other analgesic techniques, and to increase safety within the surgical procedure.