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Quadratus lumborum block for patients undergoing percutaneous nephrolithotomy: A randomized controlled study


 Department of Anesthesiology, King George's Medical University, Lucknow, Uttar Pradesh, India

Correspondence Address:
Rati Prabha,
Department of Anesthesiology, King George's Medical University, Lucknow, Uttar Pradesh
India
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/aer.aer_92_21

Background: Recent studies have supported the use of quadratus lumborum block (QLB) for postoperative analgesia for patients undergoing renal surgery. Aims: The aim was to study the efficacy of posterior QLB for postoperative analgesia in patients undergoing percutaneous nephrolithotomy (PCNL). Settings and Design: This trial was a hospital-based, randomized, double-blind, controlled, prospective study. Materials and Methods: Forty patients aged from 18 to 60 years, belonging to the American Society of Anesthesiologists physical status I–III and scheduled for unilateral PCNL under spinal anesthesia were administered ultrasound-guided posterior QLB with 30 ml of either 0.2% ropivacaine (Group Q) or normal saline (Group C) after the subarachnoid block. Duration of analgesia was the primary outcome variable. Statistical Analysis Used: Data were compiled in Microsoft Excel, and analyses were performed in SPSS (version 24.0.0.0; IBM, Armonk, New York, USA). Unpaired t-test, Mann–Whitney U test, and Fisher's exact test were used for the comparison of continuous, ordinal, and categorical data, respectively. Results: Duration of analgesia was significantly longer in Group Q (1167.10 ± 89.74 vs. 290.25 ± 47.38 min), as compared to Group C. Except at the end of the surgery, visual analog scale at rest and on movement was significantly lower till 20th h in Group Q. Patient satisfaction was better, and analgesic consumption was lower in Group Q. Side effects were similar in both groups. Conclusions: QLB provides good quality, and prolonged duration of postoperative analgesia compared to placebo for PCNL, but more large-scale studies are needed to recommend it for routine use.


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