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ORIGINAL ARTICLE
Year : 2020  |  Volume : 64  |  Issue : 8  |  Page : 668-674

Analgesic sparing effect of dexamethasone with levobupivacaine in quadratus lumborum block in patients undergoing unilateral inguinal hernia repair: A prospective randomised controlled trial


1 Department of Anaesthesiology and Critical Care, Dr S N Medical College, Jodhpur, Rajasthan, India
2 Department of Anaesthesiology and Critical Care, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
3 Department of Anaesthesiology and Critical Care, Government Medical College, Pali, Rajasthan, India
4 Department of Anaesthesiology, Critical Care and Pain Medicine, All India Institute of Medical Sciences, New Delhi, India

Correspondence Address:
Dr. Geeta Singariya
123, Vaishali Avenue, Jhanwar Road, Jodhpur - 342 008, Rajasthan
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ija.IJA_159_20

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Background: Quadratus lumborum block (QLB) provides somatic and visceral analgesia to the lower thoracic and abdominal wall. The aim was to investigate the analgesic effect of dexamethasone with levobupivacaine in QLB in patients undergoing unilateral inguinal hernia repair surgery. Methods: A total of 90 patients of American Society of Anaesthesiologists (ASA) I/II were randomly divided into two groups. Group L received 0.25% levobupivacaine (20 ml) + normal saline (1 ml) and group D received 0.25% levobupivacaine (20 ml) + 4 mg dexamethasone (1 ml) in QL plane on the operated side using ultrasound, after completion of surgery under spinal anaesthesia. The primary objective was to compare time for first rescue analgesia. The secondary objectives were total rescue analgesic consumption and numeric rating scale (NRS) in the first 24 h. Results: The demographic data age, sex, height, weight and ASA were comparable in both groups. The mean time to request for first rescue analgesia was longer in group D compared to group L (1016.02 ± 205.97 min versus 640 ± 132.96 min; P < 0.0001). The mean total tramadol consumption in the first 24 h was lower in group D compared to group L (233.55 ± 86.92 mg versus 328.22 ± 78.74 mg; P < 0.0001). Patients in group D had significantly lower NRS scores at rest and on movement as compared to group L. Conclusions: The addition of dexamethasone to levobupivacaine in QLB results in prolonged duration of postoperative analgesia, less rescue analgesic requirements and better quality of analgesia as compared to levobupivacaine in unilateral inguinal hernia repair surgery.


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