normal saline + bupivacaine

This is a combination of normal saline (sterile 0.9% sodium chloride solution) and bupivacaine, an amide-type local anesthetic. The mixture is commonly used in clinical practice to dilute bupivacaine for spinal, epidural, or local infiltration anesthesia. Normal saline serves as a diluent to adjust the concentration and baricity of bupivacaine, allowing for tailored onset and duration of anesthesia depending on the surgical procedure. Bupivacaine acts by blocking voltage-gated sodium channels in neuronal membranes, inhibiting nerve impulse transmission and providing regional or local anesthesia[1][4][6]. This combination does not have a unique brand name but is widely used in perioperative pain management.