USG Thoracolumbar Interfascial Plane (TLIP) in Lumbar Spine Surgeries

"A 10 cm 21G Stimuplex needle (Braun Medical Inc, Bethlehem, PA, USA) will be inserted in a lateral-to-medial orientation with an approximate angle of 30 degrees to the skin. The needle will then be advanced under real-time in-plane ultrasound guidance through the belly of the LG towards the MF. The needle tip will be directed towards the LG/MF interface deep to the midpoint then a total volume of 20 ml of Bupivacaine 0.25% will be incrementally injected with intermittently repeated negative aspiration. Anterior spread of local anesthetic will be viewed as favourable.~The same procedure will be repeated on the left side. The patient will then be disinfected and draped and surgery will be allowed to proceed normally."

A base low dose opioid of 5mg morphine I.V every 8 hours. Rescue analgesia will be given to the patient if reported a VAS equal or more than 4 in the form of I.V morphine in 2.5mg increments till VAS returns to 4 or less in addition to 1 gm of oral acetaminophen every 6 hours