Which type of anesthesia is injected into the subarachnoid space?

The type of anesthesia injected into the subarachnoid space is called spinal anesthesia. This method involves administering local anesthetics directly into the cerebrospinal fluid, providing rapid onset of anesthesia for procedures involving the lower abdomen, pelvis, and lower extremities. It allows for effective pain relief while the patient remains awake or sedated.