Indian Journal of Anaesthesia  
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ORIGINAL ARTICLE
Year : 2017  |  Volume : 61  |  Issue : 5  |  Page : 381-386

Analgesic efficacy of ultrasound-guided paravertebral block versus serratus plane block for modified radical mastectomy: A randomised, controlled trial


1 Department of Anaesthesia, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
2 Department of Anaesthesia, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada

Correspondence Address:
Kapil Gupta
Department of Anaesthesia, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi - 110 029
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ija.IJA_62_17

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Background and Aims: Modified radical mastectomy (MRM) may be associated with severe post-operative pain, leading to chronic pain syndrome. We compared the post-operative analgesic profile of two ultrasound-guided nerve blocks: Paravertebral block (PVB) and serratus plane block (SPB). Methods: This double-blind, randomised study was conducted on fifty adult females, scheduled for MRM with axillary dissection. After inducing general anaesthesia with intravenous midazolam 1 mg, fentanyl 1.5 mcg/kg, propofol 1–2 mg/kg and vecuronium 0.1 mg/kg, patients were administered either ultrasound-guided thoracic PVB at T4 (n = 25) or SPB at 5th rib (n = 25) with 20 ml of 0.5% bupivacaine, both as a single level injection. Time to first rescue analgesia and morphine consumption in 4, 6, 24, 48 and 72 h by PCA pump, visual analogue scale score and any adverse effects were recorded. Quantitative variables were compared using the unpaired t-test or the Mann–Whitney U test between the two groups. Qualitative variables were compared using the Chi-square test or Fisher's exact test. Results: The duration of analgesia (mean ± Standard deviation [SD]) was significantly longer in the PVB group compared to SPB group (346 ± 57 min vs. 245.6 ± 58 min, P< 0.001). The post-operative 24 h morphine consumption (mean ± SD) was significantly higher in the SPB group (9.7 ± 2.1 mg) compared to PVB group (6.5 ± 1.5 mg) (P < 0.001). Conclusion: Ultrasound-guided SPB is an alternative analgesic technique to thoracic PVB for MRM although PVB provides a longer duration of analgesia.


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