Spinal Anesthesia

The process of administering a local anesthetic or opioid into the subarachnoid space, often with a tiny needle, is known as spinal anesthesia (or spinal anesthesia), also known as spinal block, subarachnoid block, intradural block, and intrathecal block

It is a reliable and safe alternative to general anesthesia that is frequently used for procedures on the lower limbs and below the umbilicus. It is typically administered by anesthesiologists.

Injecting a local anesthetic into the CSF fluid, either with or without an opioid, produces locoregional anesthesia, including genuine analgesia, and motor, sensory, and autonomic (sympathetic) blockage. Without a local anesthetic, the administration of analgesics—opioids and alpha2-adrenoreceptor agonists—into the cerebrospinal fluid causes locoregional analgesia, which includes a significant decrease in pain perception (incomplete analgesia), some autonomic blockade (parasympathetic Plexi), but no sensory or motor block.

In some postoperative care situations, locoregional analgesia may be favored over locoregional anesthesia, primarily because there is no motor or sympathetic block. The spinal needle’s tip is pointed or has a tiny bevel.