الفهرس 
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Abstract
Effective analgesia with Laparoscopic cholecystectomy (LC) enhances rapid recovery, ambulation, and discharge The QLB is done for pain management techniques for cases undergoing abdominal surgery. In the current study, we assumed that posterior quadratus lumborum block(QLB) might be better than or equal to the lateral quadratus lumborum block regarding the analgesia after laparoscopic cholecystectomy. 56 cases were randomized for elective LC. They were randomly divided into two comparable groups. The first group, cases received posterior QLB while the second one, cases received lateral QLB. Data from (28 patients in lateral QLB type I group, and 28 patients in the posterior QLB type II group) were analyzed. The cumulative post-operative fentanyl consumption at 24 hrs in cases required post-operative opioids showed no significant differences among the posterior QLB and lateral QLB groups. The initial post-operative call for analgesia was slightly longer in posterior QLB group than in the lateral one. There was no significant change among the posterior QLB and lateral QLB as regard PONV, and pain scores at 30 min,1, 6, 12, and 24 hours postoperatively. In this study our conclusion was that posterior quadratus lumborum block provides analgesia to some extent similar to lateral quadratus lumborum block as comparable post-operative fentanyl consumption and VAS scores were comparable in both lateral and posterior quadratus lumborum block applications in current study. Thus, we recommend that both injections are efficient in analgesia after LC.