Bilateral External Oblique Intercostal Plane Block in Post Operative Pain Management in Hepatectomy

The block is performed before skin incision by a specialized anesthetist. With the patient positioned in the supine position with their ipsilateral arm abducted, the skin was sterilized, using the high frequency linear probe (M-Turbo HF 38 transducer 13- 6 MHz) of Fujifilm Sonosite ultrasound is placed over the sixth rib medial to the anterior axillary line approximately in midclavicular line in a parasagittal orientation. A 20-guage needle is inserted in a cephalocaudal direction, and the external oblique intercostal plane was hydro dissected with saline. After hydro dissection, the needle is advanced 1 to 2 cm, and 20 mL of 0.25% bupivacaine (Sunny Pharmaceutical) with 4 mg dexamethasone as an additive was administered. The same procedure will be done at the other side (bilateral external oblique intercostal plane block).

Patients in group will receive intravenous patient controlled analgesia device 100 ml (Accuafuser 100 mL, basal rate 4 mL/hr., bolus 0.5 mL/time, and lock time 15 minutes) for postoperative pain management that will contain 30 mg morphine (loading dose0.1mg/kg) will be given by infusion over 10 minutes then accuafuser will be connected),8 mg dexamethasone and 8 mg ondansetron diluted in 100 ml saline.