Antibiotics and antiseptics for venous leg ulcers - PubMed (original) (raw)
Review
Antibiotics and antiseptics for venous leg ulcers
Susan O'Meara et al. Cochrane Database Syst Rev. 2010.
Update in
- Antibiotics and antiseptics for venous leg ulcers.
O'Meara S, Al-Kurdi D, Ologun Y, Ovington LG, Martyn-St James M, Richardson R. O'Meara S, et al. Cochrane Database Syst Rev. 2013 Dec 23;(12):CD003557. doi: 10.1002/14651858.CD003557.pub4. Cochrane Database Syst Rev. 2013. PMID: 24363048 Updated. Review.
Abstract
Background: Venous leg ulcers are a type of chronic wound affecting up to 1% of adults in developed countries at some point during their lives. Many of these wounds are colonised by bacteria or show signs of clinical infection. The presence of infection may delay ulcer healing. There are two main strategies used to prevent and treat clinical infection in venous leg ulcers: systemic antibiotics and topical antibiotics or antiseptics.
Objectives: The objective of the review is to determine the effects of systemic antibiotics, topical antibiotics and antiseptics on the healing of venous ulcers.
Search strategy: For the update of this review we searched the Cochrane Wounds Group Specialised Register (searched 24/09/09); The Cochrane Central Register of Controlled Trials (CENTRAL) - The Cochrane Library 2009 Issue 3; Ovid MEDLINE - 1950 to September Week 3 2009; Ovid EMBASE - 1980 to 2009 Week 38; and EBSCO CINAHL - 1982 to September Week 3 2009. No language or publication date restrictions were applied.
Selection criteria: Randomised controlled trials recruiting people with venous leg ulceration and evaluating at least one systemic antibiotic, topical antibiotic or topical antiseptic that reported an objective assessment of wound healing (e.g. time to complete healing, frequency of complete healing, change in ulcer surface area) were eligible for inclusion. Selection decisions were made by two authors working independently.
Data collection and analysis: Information on the characteristics of participants, interventions and outcomes were recorded on a standardised data extraction form. In addition, aspects of trial methods were extracted, including randomisation, allocation concealment, blinding of participants and outcome assessors, incomplete outcome data and study group comparability at baseline. Data extraction and validity assessment were conducted by one author and checked by a second.
Main results: Twenty five trials reporting 32 comparisons were identified. Five trials evaluated systemic antibiotics; the remainder evaluated topical preparations: cadexomer iodine (10 trials); povidone iodine (5 trials); peroxide-based preparations (3 trials); ethacridine lactate (1 trial); mupirocin (1 trial); and chlorhexidine (1 trial). For the systemic antibiotics, the only comparison where a statistically significant between-group difference was detected was that in favour of the antihelminthic levamisole when compared with placebo. This trial, in common with the other evaluations of systemic antibiotics, was small and so the observed effect could have occurred by chance or been due to baseline imbalances in prognostic factors. For topical preparations, there is some evidence to suggest that cadexomer iodine generates higher healing rates than standard care. One study showed a statistically significant result in favour of cadexomer iodine when compared with standard care (not involving compression) in the frequency of complete healing at six weeks (RR 2.29, 95% CI 1.10 to 4.74). The intervention regimen used was intensive, involving daily dressing changes, and so these findings may not be generalisable to most everyday clinical settings. When cadexomer iodine was compared with standard care with all patients receiving compression, the pooled estimate from two trials for frequency of complete healing at 4 to 6 weeks indicated significantly higher healing rates for cadexomer iodine (RR 6.72, 95% CI 1.56 to 28.95). Surrogate healing outcomes such as change in ulcer surface area and daily or weekly healing rate showed favourable results for cadexomer iodine, peroxide-based preparations and ethacridine lactate in some studies. These surrogate outcomes may not be valid proxies for complete healing of the wound. Most of the trials were small and many had methodological problems such as poor baseline comparability between groups, failure to use (or report) true randomisation, adequate allocation concealment, blinded outcome assessment and analysis by intention-to-treat.
Authors' conclusions: At present, there is no evidence to support the routine use of systemic antibiotics to promote healing in venous leg ulcers. However, the lack of reliable evidence means that it is not possible to recommend the discontinuation of any of the agents reviewed. In terms of topical preparations, there is some evidence to support the use of cadexomer iodine. Further good quality research is required before definitive conclusions can be made about the effectiveness of systemic antibiotics and topical preparations such as povidone iodine, peroxide-based preparations, ethacridine lactate, mupirocin and chlorhexidine in healing venous leg ulceration. In light of the increasing problem of bacterial resistance to antibiotics, current prescribing guidelines recommend that antibacterial preparations should only be used in cases of clinical infection and not for bacterial colonisation.
Update of
- Antibiotics and antiseptics for venous leg ulcers.
O'Meara S, Al-Kurdi D, Ovington LG. O'Meara S, et al. Cochrane Database Syst Rev. 2008 Jan 23;(1):CD003557. doi: 10.1002/14651858.CD003557.pub2. Cochrane Database Syst Rev. 2008. PMID: 18254024 Updated. Review.
Comment in
- Antibiotics and antiseptics for venous leg ulcers.
Haesler E. Haesler E. Int J Evid Based Healthc. 2010 Jun;8(2):101-2. Int J Evid Based Healthc. 2010. PMID: 21077398 No abstract available.
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