Comparison of Different Neural Blockade Techniques in Postoperative Analgesia After Total Hip Arthroplasty

Comparison of Different Neural Blockade Techniques in Postoperative Analgesia After Total Hip Arthroplasty

Comparison of Different Neural Blockade Techniques in Postoperative Analgesia After Total Hip Arthroplasty

To compare the different analgesic protocols for patients receiving total hip arthroplasty(THA). Patients will divided into 3 groups, which are 1. fascia iliaca compartment block with IV-PCA(patient controlled analgesia), 2. femoral nerve and lateral femoral cutaneous nerve block with IV-PCA, 3. IV-PCA only.

90 patients will be enrolled and randomized to the 3 different groups. Inclusion criteria: Patient undergoing THA: 20-75 years old, ASA I-III, general anesthesia with intubation, fentanyl IV PCA. Exclusion criteria Alcohol/substance abuse Rheumatoid arthritis Severe coagulation disorder(PLT<80000 or INR > 1.5) Peripheral neuropathy Allergy to opioids or local anesthetics BMI>35 The outcome followers are blinded to the intervention provided. Outcome parameters: Opioid consumption of IV PCA in first 24 hrs. NSAID consumption NRS of pain, the timings of follow-up should be: pre-block, 30 mins post-block, 60 mins post-block, 2 hours post-block, 24hours post-block sensory block in FN, Obturator Nerve and LFCN First request of supplemental IV analgesia

1. Fascia iliaca compartment block: The injection was performed under ultrasound guidance. Surface landmark is identified on the line between anterior superior iliac spine and pubic tubercle. The injection site is at the medial one-third of the line. The needle is threaded medial to lateral and standardization of local anesthetic deposit is in the fascia plane between fascia iliaca and iliacus muscle. Anesthetic regimen: 2% xylocaine 15mL + 0.5% bupivacaine 15mL.

Femoral nerve block: The injection was performed under ultrasound guidance. Femoral nerve was identified in the femoral neurovascular bundle below or around inguinal ligament. The needle is threaded with lateral to medial approach. Local anesthetics will be deposited around the femoral nerve, the standardization of protocol is that femoral nerve should be lifted off from iliacus muscle. Anesthetic regimen: 2% xylocaine 10mL + 0.5% bupivacaine 10mL. Lateral femoral cutaneous nerve block: The injection was performed under ultrasound guidance. Lateral femoral cutaneous nerve was identified in the fascia plane between sartorius muscle and tensor fascia lata muscle. Anesthetic regimen: 2% xylocaine 5mL + 0.5% bupivacaine 5mL

Pain score by numerical rating scale from pre-intervention to 24 hours after intervention(the effect of neural blockade seldom lasts more than 24 hours)

1. Pre-intervention(which is the time when operation was done and the patient arrive postoperative care unit.) 2. 30 minutes after intervention, 3. 60 minutes after intervention, 4. 120 minutes after intervention, 5. 24 hours after intervention.

Inclusion Criteria: ASA I-III, general anesthesia with intubation. fentanyl IV PCA Exclusion Criteria: Alcohol/substance abuse Rheumatoid arthritis Severe coagulation disorder(PLT<80000 or INR > 1.5) Peripheral neuropathy Allergy to opioids or local anesthetics BMI>35

1. Hadzic's peripheral nerve blocks and anatomy for ultrasound-guidedregional anesthesia, 2012. Chapter.35, 36. 2. K.H. Thymo, O. Mathiesen, J.B. Dahl, et al. Lateral femoral cutaneous nerve block after total hip arthroplasty: a randomized trial. Acta Anaesthesiologica Scandinavica 60(2016) 1297-1305. 3. Shoji Nishio, Shigeo Fukunishi, Miura Juichi et al. Comparison of continuous femoral nerve block, caudal epidural block, and intravenous patient-controlled analgesia in pain control after total hip arthroplasty: a prospective randomized study. Orthopedic Reviews 2014; 6; 5138. 4. Bin Yu, Miao He, Guang-Yu Cai et al. Ultrasound-guided continuous femoral nerve block vs continuous fascia iliaca compartment block for hip replacement in the elderly. Medicine (2016) 95:42 5. Guay J, Parker MJ, Gajendragadkar PR, et al. Anaesthesia for hip fracture surgery in adults. Cochrane Database of Systemic Reviews 2016, issue 2, Art. No:CD000521. 6. K.H. Thybo, Harald Schmidt and Daniel Hagi-Pederson. Effect of lateral femoral cutaneous nerve block on pain after total hip arthroplasty: a randomized , blinded, placebo-controlled trail. BMC anesthesiology (2016) 16:21. 7. John Dolan, Anne Williams, Eileen Murney, et al. Ultrasound guided fascial iliaca block: a comparison with loss of resistance technique. Reg Anesth Pain Med 2008; 33: 526-31 8. Ali N. Shariat, Admir Hadzic, Daquan Xu, et al. Fascia iliaca block for analgesia after hip arthroplasty: a randomized double-blinded, placebo-controlled trial. Reg Anesth Pain Med 2013;38:201-205