RESUMO
AIMS: To evaluate comparative outcomes of local anaesthesia (LA) and spinal anaesthesia (SA) in patients undergoing haemorrhoidectomy. METHODS: A systematic online search was conducted using the following databases: PubMed, Scopus, Cochrane Database, The Virtual Health Library, Clinical trials.gov , and Science Direct. Only randomised controlled trials (RCTs) comparing excisional haemorrhoidectomy under LA and SA were included. Post-operative pain score, need for rescue analgesia, urinary retention, headache, rectal bleeding, and operative time were the evaluated outcome parameters. RESULTS: Seven RCTs reporting a total number of 440 patients of whom 222 patients underwent haemorrhoidectomy under LA and 218 patients had the procedure under SA were included. LA was associated with significantly lower post-operative pain at 6 h (mean difference (MD) - 2.25, P = 0.0001) and at 24 h (MD - 0.87, P = 0.0002), need for a rescue analgesia (risk ratio (RR) 0.18, P = 0.002), urinary retention (RR 0.17, P = 0.0001), and headache (RR 0.09, P = 0.0003) compared with SA. However, there was no significant difference in rectal bleeding (RR 0.89, P = 0.70) and operative time (MD 1.15, P = 0.19) between LA and SA. CONCLUSION: Compared with SA, LA may be associated with significantly lower post-operative pain, need for rescue analgesia, urinary retention, and headache making it an attractive choice of anaesthesia in day-case surgery for those who are not either fit for GA or refuse such anaesthetic modality.