TLIP Block and ESP Block For Perioperative Analgesia In Patients With Lumbar Spine Fusion Surgery

"* Patients were placed in a prone position;~* ultrasound-guided TLIP block: (1) The transducer was positioned in a transverse midline position at the level of the L3 vertebra. After the identification of the spinous process and interspinous muscles. (2) The probe was moved laterally to identify the multifidus (MF) and longissimus (LG) muscles. (3) the TLIP block was performed under real-time ultrasound guidance using an insulated 100-mm 22G echogenic needle which was inserted in-plane lateral to the medial direction. (4) After negative aspiration, 20-mL 0.25% ropivacaine was injected in each side bilaterally in the interface between the MF and LG muscles.~* patients received general anesthesia"

"* Patients were placed in a prone position;~* ultrasound-guided ESP block: (1) The 12th rib was identified in the parasagittal plane, and with probe shifted caudad and medial, the L3 transverse process (TP) was identified. (2) Insulated 100-mm 22G echogenic needle was inserted from cranial to caudal direction. (3) The needle tip was identified between the L2 and L3, and 20 mL of 0.25% ropivacaine was injected in each side bilaterally in ESP.~* patients received general anesthesia"

"* patients received general anesthesia~* the expected incision was anesthetized with 15ml of 1% lidocaine mixed with 1/200,000 adrenaline on each side before surgery."