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ORIGINAL ARTICLE
Year : 2021  |  Volume : 15  |  Issue : 1  |  Page : 45-50

Comparison of perineural and intravenous dexamethasone as an adjuvant to levobupivacaine in ultrasound-guided infraclavicular brachial plexus block: A prospective randomized trial


1 Department of Anaesthesia, Vydehi Institute of Medical Sciences and Research Centre, Bengaluru, Karnataka, India
2 Department of Superspeciality Anaesthesia, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India
3 Department of Anaesthesia, MVJ Medical College and Research Hospital, Bengaluru, Karnataka, India
4 Department of Critical Care Medicine, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India

Correspondence Address:
Dr. Jay Prakash
C/O- R.P. Sinha, HI-166, Harmu Housing Colony, Ranchi, Jharkhand
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/aer.aer_69_21

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Background: The effect of perineural versus intravenous (i.v.) dexamethasone (4 mg) when added to levobupivacaine as an adjuvant has not been well studied. Aims: This study was conducted to compare the analgesic efficacy of perineural and i.v. dexamethasone as an adjuvant to levobupivacaine in infraclavicular brachial plexus (ICBP) block. Settings and Design: This was a prospective, randomized, double-blind study. Materials and Methods: This study was conducted on 68 patients with the ultrasound-guided ICBP block, randomly allocated into two groups (34 each). Four patients had failed block (2 in each group) that was excluded from the study. Group A received 25 mL of levobupivacaine 0.5% and 1 mL of normal saline for the block and i.v. dexamethasone 4 mg. Group B received 25 mL of levobupivacaine 0.5% with 4 mg of perineural dexamethasone for the block. Postoperative vitals and different block characteristics were assessed. Statistical Analysis Used: Student's independent sample t-test and Chi-square test were used for statistical analysis. Results: The duration of motor block and analgesia in Group A was 1245.94 ± 153.22 min and 1310.16 ± 151.68 min, respectively. However, in Group B, the duration of motor block and analgesia was 1768.13 ± 309.86 min and 1743.59 ± 231.39 min, respectively, which was more when compared to Group A (P < 0.001). The Visual Analog Scale score of ≥3 in Group A was 37% and in Group B was 9% (P = 0.008). Four cases had delayed regression of motor block in the perineural group. Conclusions: Perineural dexamethasone significantly prolonged the duration of motor block promoted by levobupivacaine in infraclavicular brachial plexus block, reduced pain intensity and rescue analgesia needs in the postoperative period when compared with the intravenous dexamethasone.


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