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Year : 2019  |  Volume : 63  |  Issue : 3  |  Page : 205-211

A comparative evaluation of pre-emptive versus post-surgery intraperitoneal local anaesthetic instillation for postoperative pain relief after laparoscopic cholecystectomy: A prospective, randomised, double blind and placebo controlled study

Department of Anaesthesiology and Critical Care, Sri Venkateswara Institute and Medical Sciences, SVIMS University, Tirupati, Andhra Pradesh, India

Correspondence Address:
Dr. Aloka Samantaray
Department of Anaesthesiology and Critical Care, Sri Venkateswara Institute of Medical Sciences, SVIMS University, Tirupati - 517 507, Andhra Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ija.IJA_767_18

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Background and Aims: Intraperitoneal local anaesthetic instillation (IPLAI) reduces postoperative pain and analgesic consumption effectively but the timing of instillation remains debatable. This study aims at comparing pre-emptive versus post-surgery IPLA in controlling postoperative pain after elective laparoscopic cholecystectomy. Methods: Ninety patients belonging to American Society of Anesthesiologists physical status I or II were randomly assigned to receive IPLAI of either 30 ml of normal saline (C) or 30 ml of 0.5% bupivacaine at the beginning (PE) or at the end of the surgery (PS) using a double-dummy technique. The primary outcome was the intensity of postoperative pain by visual analogue scale score (VAS) at 30 minute, 1, 2, 4, 6, 24 hours after surgery and time to the first request for analgesia. The secondary outcomes were analgesic request rate in 24 hours; duration of hospital stay and time to return to normal activity. Data were compared using analysis of variance, Kruskal-Wallis or Chi-square test. Results: For all predefined time points, VAS in group PE was significantly lower than that in groups C (P < 0.05). The time to first analgesic request was shortest in group C (238.0 ± 103.2 minutes) compared to intervention group (PE, 409.2 ± 115.5 minutes; PS, 337.5 ± 97.5 minutes;P < 0.001). Time to attain discharge criteria was not statistically different among groups. Conclusion: Pre-emptive intraperitoneal local anaesthetic instillation resulted in better postoperative pain control along with reduced incidence of shoulder pain and early resumption of normal activity in comparison to post surgery IPLAI and control.

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