الفهرس 
Anatomical and Physiological ConsiderationsOnly 14 pages are availabe for public view
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Abstract
Background: This prospective randomized study was performed on 80 patients, 21-60 years old, scheduled for open nephrectomy surgery. Patients were equally allocated to two groups; the transversus abdominis plane block (TAPB) group and the quadratus lumborum block (QLB) group. Both groups received 0.3 ml/Kg of bupivacaine 0.25% on the side of the operation. Total postoperative pethidine consumption, time to rescue analgesia, postoperative Visual Analogue Scale (VAS), and pethidine-related postoperative nausea and vomiting (PONV) were recorded.
Results: Total postoperative pethidine consumption was significantly lower in the QLB group; 73.75 ± 23.99 mg versus 115.63 ± 31.87 mg in the TAPB group. Time to 1st rescue analgesia was significantly prolonged in the QLB group; 477.075 ± 49.2 min versus 430.825±48 min in the TAPB group. The VAS was significantly lower in the QLB group; on arrival to the Post-Anesthesia Care Unit (PACU), at 1, 4, 8, and 12 postoperative hrs. At 16 and 24 postoperative hrs; both groups showed non-significant differences in the VAS scores. In the QLB group, 20%of patients had PONV versus 35% of patients in the TAPB group with no significant difference.
Conclusions: QLB efficiently reduced pain after open nephrectomy surgeries; in terms of quality and duration of pain control compared to TAPB.