Effectiveness of interventions to enhance healing of chronic ulcers of the foot in diabetes: a systematic review.

The outcome of management of diabetic foot ulcers remains a challenge, and there remains continuing uncertainty concerning optimal approaches to management. It is for these reasons that in 2008 and 2012, the International Working Group of the Diabetic Foot (IWGDF) working group on wound healing published systematic reviews of the evidence to inform protocols for routine care and to highlight areas, which should be considered for further study. The same working group has now updated this review by considering papers on the interventions to improve the healing of chronic ulcers published between June 2010 and June 2014. Methodological quality of selected studies was independently assessed by two reviewers using Scottish Intercollegiate Guidelines Network criteria. Selected studies fell into the following ten categories: sharp debridement and wound bed preparation with larvae or hydrotherapy; wound bed preparation using antiseptics, applications and dressing products; resection of the chronic wound; oxygen and other gases, compression or negative pressure therapy; products designed to correct aspects of wound biochemistry and cell biology associated with impaired wound healing; application of cells, including platelets and stem cells; bioengineered skin and skin grafts; electrical, electromagnetic, lasers, shockwaves and ultrasound and other systemic therapies, which did not fit in the aforementioned categories. Heterogeneity of studies prevented pooled analysis of results. Of the 2161 papers identified, 30 were selected for grading following full text review. The present report is an update of the earlier IWGDF systematic reviews, and the conclusion is similar: that with the possible exception of negative pressure wound therapy in post-operative wounds, there is little published evidence to justify the use of newer therapies. Analysis of the evidence continues to present difficulties in this field as controlled studies remain few and the majority continue to be of poor methodological quality.

Prevention and management of foot problems in diabetes: a Summary Guidance for Daily Practice 2015, based on the IWGDF Guidance Documents.

In this 'Summary Guidance for Daily Practice', we describe the basic principles of prevention and management of foot problems in persons with diabetes. This summary is based on the International Working Group on the Diabetic Foot (IWGDF) Guidance 2015. There are five key elements that underpin prevention of foot problems: (1) identification of the at-risk foot; (2) regular inspection and examination of the at-risk foot; (3) education of patient, family and healthcare providers; (4) routine wearing of appropriate footwear; and (5) treatment of pre-ulcerative signs. Healthcare providers should follow a standardized and consistent strategy for evaluating a foot wound, as this will guide further evaluation and therapy. The following items must be addressed: type, cause, site and depth, and signs of infection. There are seven key elements that underpin ulcer treatment: (1) relief of pressure and protection of the ulcer; (2) restoration of skin perfusion; (3) treatment of infection; (4) metabolic control and treatment of co-morbidity; (5) local wound care; (6) education for patient and relatives; and (7) prevention of recurrence. Finally, successful efforts to prevent and manage foot problems in diabetes depend upon a well-organized team, using a holistic approach in which the ulcer is seen as a sign of multi-organ disease, and integrating the various disciplines involved.

Reducing lower leg amputations in diabetes: a challenge for patients, healthcare providers and the healthcare system.

Amputation of the lower limb is one of the most feared diabetic complications. It is associated with loss of mobility and a poor quality of life. Amputations result in high economic burden for the healthcare system. The financial cost is also high for patients and their families, particularly in countries that lack a comprehensive health service and/or have a low income. Losing a leg frequently implies financial ruin for a whole family in these countries; therefore, a reduction in diabetes-related amputations is a major global priority. Marked geographical variation in amputation rates has been reported within specific regions of an individual country and between countries. A coordinated healthcare system with a multidisciplinary approach is essential if the number of amputations is to be reduced. This commentary discusses how studies on the variation in amputation rates can help to identify barriers in the access or delivery of care with the aim of reducing the burden of diabetic foot disease.

A systematic review of the effectiveness of interventions to enhance the healing of chronic ulcers of the foot in diabetes.

The outcome of management of diabetic foot ulcers is poor and there is uncertainty concerning optimal approaches to management. We have undertaken a systematic review to identify interventions for which there is evidence of effectiveness. A search was made for reports of the effectiveness of interventions assessed in terms of healing, ulcer area or amputation in controlled clinical studies published prior to December 2006. Methodological quality of selected studies was independently assessed by two reviewers using Scottish Intercollegiate Guidelines Network (SIGN) criteria. Selected studies fell into the following categories: sharp debridement and larvae; antiseptics and dressings; chronic wound resection; hyperbaric oxygen (HBO); reduction of tissue oedema; skin grafts; electrical and magnetic stimulation and ultrasound. Heterogeneity of studies prevented pooled analysis of results. Of the 2251 papers identified, 60 were selected for grading following full text review. Some evidence was found to support hydrogels as desloughing agents and to suggest that a systemic (HBO) therapy may be effective. Topical negative pressure (TNP) may promote healing of post-operative wounds, and resection of neuropathic plantar ulcers may be beneficial. More information was needed to confirm the effectiveness and cost-effectiveness of these and other interventions. No data were found to justify the use of any other topically applied product or dressing, including those with antiseptic properties. Further evidence to substantiate the effect of interventions designed to enhance the healing of chronic ulcers is urgently needed. Until such evidence is available from robust trials, there is limited justification for the use of more expensive treatments and dressings.

A prospective study: hyperbaric oxygen therapy in diabetics with chronic foot ulcers.

Research suggests that hyperbaric oxygen therapy may have beneficial effects on ulcer healing and amputation rates in diabetic patients. This paper describes the design of a study that is evaluating its effects on chronic diabetic foot ulcers.

Nutritional supplementation for diabetic foot ulcers: the first RCT.

OBJECTIVE: To determine if oral nutritional supplementation improved wound healing in malnourished patients with diabetic foot ulcers when compared with a placebo. METHOD: This prospective randomised controlled double-blind trial involved patients aged over 60 with diabetes mellitus and a Wagner grade I-II foot ulcer of over four weeks' duration. Patients received either 400 ml (400 kcal) oral nutritional supplementation (n = 26) or 400 ml placebo (n = 27) daily for six months. Patients were followed monthly for six months and after one and two years. RESULTS: A third of the patients were classified as having protein-energy malnutrition at inclusion, with no difference between the two groups. Critical leg ischaemia was more common in the intervention group than in the placebo group (p = 0.008). Nine patients in the intervention group (35%) and four in the placebo group (15%) dropped out of the study (not significant). Of those who completed the study, the wound had healed at six months in eight out of 23 patients (41%) (placebo) and in seven out of 17 (35%) (intervention) (not significant). Twenty-four per cent of patients with protein-energy malnutrition at inclusion had healed at six months compared with 50% of those without it (not significant). CONCLUSION: This is the first study to evaluate the possible benefits of nutritional supplementation on diabetic foot ulcers. A third of patients were malnourished. We encountered several methodological problems and were unable to demonstrate an improved wound healing rate in these patients.

Beliefs about health and illness essential for self-care practice: a comparison of migrant Yugoslavian and Swedish diabetic females.

In a multicultural society the frequency of contact with migrant diabetic individuals will increase, as well as the need for knowledge about their beliefs about health and illness, which have rarely been studied. The aim of the present study was to explore beliefs about health and illness among migrant Yugoslavian and Swedish diabetic subjects that might affect their self-reported self-care practices and care-seeking behaviours. The study design was explorative, and a purposive sampling procedure was used. Fifteen females born in Sweden and 13 in former Yugoslavia, aged 33-73 years, with previously known diabetes mellitus were recruited from primary health care centres in southern Sweden. Median time of residence in Sweden was 5 years (range 2-30 years). Eight of the Yugoslavians had their diabetes diagnosed in Sweden. Focus-group interviews including scenarios of common problems related to diabetes mellitus were held. Yugoslavian females in general gave less tangible examples concerning beliefs about health and illness. Yugoslavians were orientated towards feelings related to their migratory experiences, enjoyed life by making deviations from dietary advice and retaining former traditions, and were less inclined towards self-monitoring and preventive foot care. They also expressed a passive role, depending on health care personnel, and discussed the influence of supernatural forces. Swedes expressed themselves in terms of medicine and a healthy lifestyle, took active part in their self-care and let self-monitoring guide their actions. Self-care was mainly practised to restore health when ill in both groups, and when help was needed it was sought in the professional sector (nurse or physician). Yugoslavians expressed higher confidence in physicians and used more natural cure medicine, side by side with biomedicine, while Swedes more frequently used alternative medicine. Demonstrated dissimilarities illustrate that beliefs about health and illness differ between migrant Yugoslavian and Swedish diabetic individuals, and are essential for self-care practice and care-seeking behaviour and must be considered when planning diabetes care.