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Advances in Medicine
Volume 2017 (2017), Article ID 3968278, 5 pages
https://doi.org/10.1155/2017/3968278
Review Article

Methylene Blue Effectiveness as Local Analgesic after Anorectal Surgery: A Literature Review

1Surgery Department, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
2Community Medicine Department, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia

Correspondence should be addressed to Dewi Fransiska; moc.liamg@eever.iwed

Received 9 March 2017; Accepted 10 July 2017; Published 15 August 2017

Academic Editor: Fakhrul Islam

Copyright © 2017 Dewi Fransiska et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. Methylene blue (MB) has been found to have unique analgesic property through temporary disruption of sensory nerve conduction. In anorectal surgery, MB is widely used as a biologic stain but the analgesic effect has never been studied. Thus, a literature review completed with critical appraisal is required to find out its efficacy. Methods. A review has been run to find out its efficacy. Literature search proceeded in database sites, namely, PubMed, EBSCO, Cochrane, Wiley, and ProQuest using the following keywords: “anorectal” OR “hemorrhoid” OR “anal fistula” OR “anal fissure” OR “anal abscess” OR “anal pruritus” AND “methylene blue” AND “analgesic”; then the critical appraisal and its implication were discussed. Result. There were 491 articles in full text found, and four studies met the inclusion criteria. Two studies were focused on the evaluation of VAS in hemorrhoid surgery whereas the rest were focused on the evaluation of symptom score in anal pruritus. Conclusions. A study with level of evidence 2 on VAS showed the efficacy. The rest showed insufficient evidence due to variations of anorectal surgery and the methods and techniques of MB application. A further prospective clinical study is required.