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Keykhaee M, Rahimifard M, Najafi A, Baeeri M, Abdollahi M, Mottaghitalab F, Farokhi M, Khoobi M. Alginate/gum arabic-based biomimetic hydrogel enriched with immobilized nerve growth factor and carnosine improves diabetic wound regeneration. Carbohydr Polym 2023; 321:121179. [PMID: 37739486 DOI: 10.1016/j.carbpol.2023.121179] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 09/24/2023]
Abstract
Diabetic foot ulcers (DFUs) often remain untreated because they are difficult to heal, caused by reduced skin sensitivity and impaired blood vessel formation. In this study, we propose a novel approach to manage DFUs using a multifunctional hydrogel made from a combination of alginate and gum arabic. To enhance the healing properties of the hydrogel, we immobilized nerve growth factor (NGF), within specially designed mesoporous silica nanoparticles (MSN). The MSNs were then incorporated into the hydrogel along with carnosine (Car), which further improves the hydrogel's therapeutic properties. The hydrogel containing the immobilized NGF (SiNGF) could control the sustain release of NGF for >21 days, indicating that the target hydrogel (AG-Car/SiNGF) can serve as a suitable reservoir managing diabetic wound regeneration. In addition, Car was able to effectively reduce inflammation and significantly increase angiogenesis compared to the control group. Based on the histological results obtained from diabetic rats, the target hydrogel (AG-Car/SiNGF) reduced inflammation and improved re-epithelialization, angiogenesis, and collagen deposition. Specific staining also confirmed that AG-Car/SiNGF exhibited improved tissue neovascularization, transforming growth factor-beta (TGFβ) expression, and nerve neurofilament. Overall, our research suggests that this newly developed composite system holds promise as a potential treatment for non-healing diabetic wounds.
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Affiliation(s)
- Maryam Keykhaee
- Department of Pharmaceutical Biomaterials and Medical Biomaterial Research Center (MBRC), Faculty of Pharmacy, Tehran University of Medical Science, Tehran, Iran
| | - Mahban Rahimifard
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Najafi
- Department of Immunology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Maryam Baeeri
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran; Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Mottaghitalab
- Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Mehdi Farokhi
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran.
| | - Mehdi Khoobi
- Department of Pharmaceutical Biomaterials and Medical Biomaterial Research Center (MBRC), Faculty of Pharmacy, Tehran University of Medical Science, Tehran, Iran; Department of Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran; Biomaterials Group, Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Science, Tehran, Iran.
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Parella K, Moody K, Wortel D, Colegrove H, Elser JA. HOXA3 accelerates wound healing in diabetic and aged non-diabetic mammals. Sci Rep 2023; 13:9923. [PMID: 37337031 DOI: 10.1038/s41598-023-36933-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Accepted: 06/13/2023] [Indexed: 06/21/2023] Open
Abstract
Chronic wounds are characterized by a persistent, hyper-inflammatory environment that prevents progression to regenerative wound closure. Such chronic wounds are especially common in diabetic patients, often requiring distal limb amputation, but occur in non-diabetic, elderly patients as well. Induced expression of HoxA3, a member of the Homeobox family of body patterning and master regulatory transcription factors, has been shown to accelerate wound closure in diabetic mice when applied topically as a plasmid encased in a hydrogel. We now provide independent replication of those foundational in vivo diabetic wound closure studies, observing 16% faster healing (3.3 mm wounds vs 3.9 mm wounds at Day 9 post original injury of 6 mm diameter) under treatment with observable microscopic benefits. We then expand upon these findings with minimal dose threshold estimation of 1 μg HoxA3 plasmid delivered topically at a weekly interval. Furthermore, we observed similarities in natural wound healing rates between aged non-diabetic mice and young diabetic mice, which provided motivation to test topical HoxA3 plasmid in aged non-diabetic mice. We observed that HoxA3 treatment achieved complete wound closure (0 mm diameter) at 2 weeks whereas untreated wounds were only 50% closed (3 mm wound diameter). We did not observe any gross adverse effects macroscopically or via histology in these short studies. Whether as a plasmid or future alternative modality, topical HoxA3 is an attractive translational candidate for chronic wounds.
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Affiliation(s)
- K Parella
- Ichor Life Sciences Inc, Lafayette, USA
- Clarkson University, Potsdam, USA
| | - K Moody
- Ichor Life Sciences Inc, Lafayette, USA
- Clarkson University, Potsdam, USA
| | - D Wortel
- Ichor Life Sciences Inc, Lafayette, USA
- Clarkson University, Potsdam, USA
| | | | - J A Elser
- Ship of Theseus LLC, Philadelphia, USA.
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Isa D, Pace D. Is ethnicity an appropriate measure of health care marginalization? A systematic review and meta-analysis of the outcomes of diabetic foot ulceration in Aboriginal populations. Can J Surg 2021; 64:E476-E483. [PMID: 34580076 PMCID: PMC8526134 DOI: 10.1503/cjs.004619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/05/2020] [Indexed: 01/13/2023] Open
Abstract
Background Aboriginal people have higher prevalence rates of diabetes than non-Aboriginal people in the same geographic locations, and diabetic foot ulcer (DFU) complication rates are also presumed to be higher. The aim of this systematic review and meta-analysis was to compare DFU outcomes in Aboriginal and non-Aboriginal populations. Methods We searched PubMed, Embase, CINAHL and the Cochrane Library from inception to October 2018. Inclusion criteria were all types of studies comparing the outcomes of Aboriginal and non-Aboriginal patients with DFU, and studies from Canada, the United States, Australia and New Zealand. Exclusion criteria were patient age younger than 18 years, and studies in any language other than English. The primary outcome was the major amputation rate. We assessed the risk of bias using the ROBINS-I (Risk Of Bias In Non-randomized Studies – of Interventions) tool. Effect measures were reported as odds ratio (OR) with 95% confidence interval (CI). Results Six cohort studies with a total of 244 792 patients (2609 Aboriginal, 242 183 non-Aboriginal) with DFUs were included. The Aboriginal population was found to have a higher rate of major amputation than the non-Aboriginal population (OR 1.85, 95% CI 1.04–3.31). Four studies were deemed to have moderate risk of bias, and 2 were deemed to have serious risk of bias. Conclusion Our analysis of the available studies supports the conclusion that DFU outcomes, particularly the major amputation rate, are worse in Aboriginal populations than in non-Aboriginal populations in the same geographic locations. Rurality was not uniformly accounted for in all included studies, which may affect how these outcome differences are interpreted. The effect of rurality may be closely intertwined with ethnicity, resulting in worse outcomes.
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Affiliation(s)
- David Isa
- From the Masters in Global Surgical Care Program, Branch of International Surgery, University of British Columbia, Vancouver, BC (Isa); and the Department of Surgery, Faculty of Medicine, Memorial University of Newfoundland, St. John's, Nfld. (Isa, Pace)
| | - David Pace
- From the Masters in Global Surgical Care Program, Branch of International Surgery, University of British Columbia, Vancouver, BC (Isa); and the Department of Surgery, Faculty of Medicine, Memorial University of Newfoundland, St. John's, Nfld. (Isa, Pace)
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Graves N, Phillips CJ, Harding K. A narrative review of the epidemiology and economics of chronic wounds. Br J Dermatol 2021; 187:141-148. [PMID: 34549421 DOI: 10.1111/bjd.20692] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/26/2021] [Indexed: 12/11/2022]
Abstract
Chronic wounds have a debilitating effect on the quality of life of many individuals, and the large economic impact on health system budgets warrants greater attention in policy making and condition management than is currently evident. The aim of this narrative review is to summarize the nature and extent of the chronic wound problem that confronts health systems across the world. The first section is used to highlight the underlying epidemiology relating to chronic wounds, while the second explores the economic costs associated with them and the relative efficiency of measures designed to manage them.
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Affiliation(s)
- N Graves
- Health Services and Systems Research, Duke-NUS Medical School, Singapore
| | - C J Phillips
- Department of Public Health and Policy Studies, Swansea University, Swansea, UK
| | - K Harding
- Clinical Innovation Hub, Cardiff University, Cardiff, UK
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Sen CK. Human Wound and Its Burden: Updated 2020 Compendium of Estimates. Adv Wound Care (New Rochelle) 2021; 10:281-292. [PMID: 33733885 PMCID: PMC8024242 DOI: 10.1089/wound.2021.0026] [Citation(s) in RCA: 294] [Impact Index Per Article: 98.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 02/24/2021] [Indexed: 12/15/2022] Open
Abstract
Significance: Chronic wounds impact the quality of life (QoL) of nearly 2.5% of the total population in the United States and the management of wounds has a significant economic impact on health care. Given the aging population, the continued threat of diabetes and obesity worldwide, and the persistent problem of infection, it is expected that chronic wounds will continue to be a substantial clinical, social, and economic challenge. In 2020, the coronavirus disease (COVID) pandemic dramatically disrupted health care worldwide, including wound care. A chronic nonhealing wound (CNHW) is typically correlated with comorbidities such as diabetes, vascular deficits, hypertension, and chronic kidney disease. These risk factors make persons with CNHW at high risk for severe, sometimes lethal outcomes if infected with severe acute respiratory syndrome coronavirus 2 (pathogen causing COVID-19). The COVID-19 pandemic has impacted several aspects of the wound care continuum, including compliance with wound care visits, prompting alternative approaches (use of telemedicine and creation of videos to help with wound dressing changes among others), and encouraging a do-it-yourself wound dressing protocol and use of homemade remedies/substitutions. Recent Advances: There is a developing interest in understanding how the social determinants of health impact the QoL and outcomes of wound care patients. Furthermore, addressing wound care in the light of the COVID-19 pandemic has highlighted the importance of telemedicine options in the continuum of care. Future Directions: The economic, clinical, and social impact of wounds continues to rise and requires appropriate investment and a structured approach to wound care, education, and related research.
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Affiliation(s)
- Chandan K. Sen
- Department of Surgery, Indiana University Health Comprehensive Wound Center, Indianapolis, Indiana, USA
- Editor-in-Chief, Advances in Wound Care
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Menz HB, Harrison C, Bayram C. Characteristics of general practitioner referrals to podiatrists in Australia, 2000-2016. Public Health 2021; 193:10-16. [PMID: 33677392 DOI: 10.1016/j.puhe.2021.01.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 01/15/2021] [Accepted: 01/18/2021] [Indexed: 10/22/2022]
Abstract
OBJECTIVE The aim of the study was to describe patterns of referral to podiatrists by general practitioners (GPs) in Australia. STUDY DESIGN This is a continuous cross-sectional study of Australian general practice activity. METHODS We analysed data from the Bettering the Evaluation and Care of Health program, collected from April 2000 to March 2016 inclusive. Data were summarised using descriptive statistics with 95% confidence intervals around point estimates. Multivariate logistic regression was used to identify GP and patient characteristics independently associated with referral. RESULTS The data set included 1,568,100 encounters, including 5,912 podiatry referrals. Referrals increased from 7.0 to 39.5 per 1000 population over the evaluation period. In multivariate analyses, female GPs were more likely than male GPs to refer, and GPs aged ≥55 years were less likely to refer. Patients referred to podiatrists were more likely to be aged ≥85 years, be Indigenous, be from an English-speaking background and have previously been seen at the practice. The problem generating the highest number of referrals was diabetes. After the introduction of Medicare funding, referred patients were more likely to be women, be aged >45 years, have a healthcare card, be socio-economically disadvantaged and have previously been seen at the practice. CONCLUSIONS GP referral to podiatrists in Australia increased markedly after the introduction of Medicare funding and appears to be targeted to those with the greatest need. Further research is required to determine whether this policy has improved outcomes and is cost-effective.
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Affiliation(s)
- H B Menz
- Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria 3086, Australia.
| | - C Harrison
- Menzies Centre for Health Policy, School of Public Health, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales 2006, Australia
| | - C Bayram
- Menzies Centre for Health Policy, School of Public Health, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales 2006, Australia
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Hamilton EJ, Davis WA, Siru R, Baba M, Norman PE, Davis TME. Temporal Trends in Incident Hospitalization for Diabetes-Related Foot Ulcer in Type 2 Diabetes: The Fremantle Diabetes Study. Diabetes Care 2021; 44:722-730. [PMID: 33441420 DOI: 10.2337/dc20-1743] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Accepted: 12/14/2020] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To determine whether, reflecting trends in other chronic complications, incident hospitalization for diabetes-related foot ulcer (DFU) has declined over recent decades in type 2 diabetes. RESEARCH DESIGN AND METHODS Participants with type 2 diabetes from the community-based Fremantle Diabetes Study phases I (FDS1; 1,296 participants, mean age 64.0 years, 48.6% males, recruited 1993-1996) and II (FDS2; 1,509 participants, mean age 65.4 years, 51.8% males, recruited 2008-2011) were followed from entry to first hospitalization for/with DFU, death, or 5 years (whichever came first). Incident rate ratios (IRRs) and incident rate differences (IRDs) were calculated for FDS2 versus FDS1 overall and in 10-year age-groups. Cox proportional hazards modeling determined independent predictors of first DFU hospitalization in the combined cohort. RESULTS Incident DFU hospitalization (95% CI) was 1.9 (0.9-3.3)/1,000 person-years in FDS1 during 5,879 person-years of follow-up and 4.5 (3.0-6.4)/1,000 person-years in FDS2 during 6,915 person-years of follow-up. The crude IRR (95% CI) was 2.40 (1.17-5.28) (P = 0.013) and IRD 2.6 (0.7-4.5)/1,000 person-years (P = 0.010). The highest IR for any age-group was 23.6/1,000 person-years in FDS2 participants aged 31-40 years. Age at diabetes diagnosis (inverse), HbA1c, insulin use, height, ln(urinary albumin/creatinine), absence of any foot pulse, previous peripheral revascularization, and peripheral sensory neuropathy (PSN) were independent predictors of incident hospitalization for/with DFU. CONCLUSIONS Incident DFU hospitalizations complicating type 2 diabetes increased between FDS phases, especially in younger participants, and were more likely in those with PSN, peripheral arterial disease, and suboptimal glycemic control at baseline.
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Affiliation(s)
- Emma J Hamilton
- Medical School, University of Western Australia, Perth, Western Australia, Australia.,Department of Endocrinology and Diabetes, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
| | - Wendy A Davis
- Medical School, University of Western Australia, Perth, Western Australia, Australia
| | - Ranita Siru
- Department of Endocrinology and Diabetes, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
| | - Mendel Baba
- Podiatry Department, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - Paul E Norman
- Medical School, University of Western Australia, Perth, Western Australia, Australia.,Department of Vascular Surgery, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
| | - Timothy M E Davis
- Medical School, University of Western Australia, Perth, Western Australia, Australia
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Zhang Y, van Netten JJ, Baba M, Cheng Q, Pacella R, McPhail SM, Cramb S, Lazzarini PA. Diabetes-related foot disease in Australia: a systematic review of the prevalence and incidence of risk factors, disease and amputation in Australian populations. J Foot Ankle Res 2021; 14:8. [PMID: 33468226 PMCID: PMC7816323 DOI: 10.1186/s13047-021-00447-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 01/06/2021] [Indexed: 01/13/2023] Open
Abstract
Background Diabetes-related foot disease (DFD) is a leading cause of global hospitalisation, amputation and disability burdens; yet, the epidemiology of the DFD burden is unclear in Australia. We aimed to systematically review the literature reporting the prevalence and incidence of risk factors for DFD (e.g. neuropathy, peripheral artery disease), of DFD (ulcers and infection), and of diabetes-related amputation (total, minor and major amputation) in Australian populations. Methods We systematically searched PubMed and EMBASE databases for peer-reviewed articles published until December 31, 2019. We used search strings combining key terms for prevalence or incidence, DFD or amputation, and Australia. Search results were independently screened for eligibility by two investigators. Publications that reported prevalence or incidence of outcomes of interest in geographically defined Australian populations were eligible for inclusion. Included studies were independently assessed for methodological quality and key data were extracted by two investigators. Results Twenty publications met eligibility and were included. There was high heterogeneity for populations investigated and methods used to identify outcomes. We found within diabetes populations, the prevalence of risk factors ranged from 10.0–58.8%, of DFD from 1.2–1.5%, and the incidence of diabetes-related amputation ranged from 5.2–7.2 per 1000 person-years. Additionally, the incidence of DFD-related hospitalisation ranged from 5.2–36.6 per 1000 person-years within diabetes populations. Furthermore, within inpatients with diabetes, we found the prevalence of risk factors ranged from 35.3–43.3%, DFD from 7.0–15.1% and amputation during hospitalisation from 1.4–5.8%. Conclusions Our review suggests a similar risk factor prevalence, low but uncertain DFD prevalence, and high DFD-related hospitalisation and amputation incidence in Australia compared to international populations. These findings may suggest that a low proportion of people with risk factors develop DFD, however, it is also possible that there is an underestimation of DFD prevalence in Australia in the few limited studies, given the high incidence of hospitalisation and amputation because of DFD. Either way, studies of nationally representative populations using valid outcome measures are needed to verify these DFD-related findings and interpretations. Supplementary Information The online version contains supplementary material available at 10.1186/s13047-021-00447-x.
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Affiliation(s)
- Yuqi Zhang
- Australian Centre for Health Services Innovation and Centre for Healthcare Translation, School of Public Health and Social Work, Queensland University of Technology, 60 Musk Ave, Kelvin Grove, Brisbane, QLD, Australia
| | - Jaap J van Netten
- Australian Centre for Health Services Innovation and Centre for Healthcare Translation, School of Public Health and Social Work, Queensland University of Technology, 60 Musk Ave, Kelvin Grove, Brisbane, QLD, Australia.,Amsterdam UMC, University of Amsterdam, Department of Rehabilitation, Amsterdam Movement Sciences, Meibergdreef 9, Amsterdam, the Netherlands
| | - Mendel Baba
- Podiatry Department, Sir Charles Gairdner Hospital, Perth, Australia
| | - Qinglu Cheng
- The Kirby Institute, University of New South Wales, Sydney, Australia
| | - Rosana Pacella
- Institute for Lifecourse Development, University of Greenwich, London, UK
| | - Steven M McPhail
- Australian Centre for Health Services Innovation and Centre for Healthcare Translation, School of Public Health and Social Work, Queensland University of Technology, 60 Musk Ave, Kelvin Grove, Brisbane, QLD, Australia.,Clinical Informatics Directorate, Metro South Health, Brisbane, Australia
| | - Susanna Cramb
- Australian Centre for Health Services Innovation and Centre for Healthcare Translation, School of Public Health and Social Work, Queensland University of Technology, 60 Musk Ave, Kelvin Grove, Brisbane, QLD, Australia
| | - Peter A Lazzarini
- Australian Centre for Health Services Innovation and Centre for Healthcare Translation, School of Public Health and Social Work, Queensland University of Technology, 60 Musk Ave, Kelvin Grove, Brisbane, QLD, Australia. .,Allied Health Research Collaborative, The Prince Charles Hospital, Brisbane, Australia.
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Sainsbury E, Shi Y, Flack J, Colagiuri S. The diagnosis and management of diabetes in Australia: Does the "Rule of Halves" apply? Diabetes Res Clin Pract 2020; 170:108524. [PMID: 33164851 DOI: 10.1016/j.diabres.2020.108524] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 09/10/2020] [Accepted: 10/15/2020] [Indexed: 01/17/2023]
Abstract
The Rule of Halves (ROH) is a theoretical framework which states that roughly half of all people with a condition are diagnosed; half of those diagnosed receive care; half of those who receive care achieve their treatment targets; and half of those who reach their targets achieve the desired treatment outcomes. This review examined the applicability of the ROH to diabetes in Australia. Five databases were searched for articles and government reports published between January 2000 and August 2019. Data was extracted for each level of the framework, and pooled sample proportions calculated for the total population and sub-group analysis by ethnicity and type of diabetes. The results showed that 72% of people with diabetes are diagnosed. Approximately 50% are receiving standard care, and 40-60% are meeting treatment targets for HbA1c, blood pressure and lipid levels. Overall, Australia is doing better than the ROH when it comes to achieving treatment outcomes; prevalence of microvascular complications was 20-30% and cardiovascular disease 62%. Indigenous people were less likely to meet treatment targets and more likely to experience adverse complications of diabetes. This review indicates the ROH does generally apply for diabetes care and management in Australia, highlighting the need for further improvement.
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Affiliation(s)
- Emma Sainsbury
- University of Sydney, Charles Perkins Centre, Boden Collaboration for Obesity, Nutrition, Exercise and Eating Disorders, Australia.
| | - Yumeng Shi
- University of Sydney, Charles Perkins Centre, Boden Collaboration for Obesity, Nutrition, Exercise and Eating Disorders, Australia.
| | - Jeff Flack
- Department of Diabetes and Endocrinology, Bankstown-Lidcombe Hospital, Sydney, NSW, Australia; Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia; School of Medicine, Western Sydney University, Sydney NSW, Australia.
| | - Stephen Colagiuri
- University of Sydney, Charles Perkins Centre, Boden Collaboration for Obesity, Nutrition, Exercise and Eating Disorders, Australia.
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Prevalence and associated factors of foot ulcer among diabetic patients in Ethiopia: a systematic review and meta-analysis. BMC Public Health 2020; 20:41. [PMID: 31924173 PMCID: PMC6954527 DOI: 10.1186/s12889-019-8133-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 12/30/2019] [Indexed: 12/11/2022] Open
Abstract
Background Diabetes and its complications including foot ulcer constitute a global public health challenge attributing to a significant cause of morbidity and mortality. Foot ulcer is one of the long-term complication of diabetes mellitus which lead to infection and amputation of lower extremities. In Ethiopia, findings from few studies were inconsistent and there is a need to systematically pool existing data to determine the magnitude of foot ulcer in diabetics and factors contributing to it. Methods We identified articles through electronic databases such as Medline, Hinari, Pub Med, Cochrane library, the Web of Science and Google Scholar. Accordingly, we identified 95 published and one unpublished article. Finally, eleven studies which fullfilled eligibility criteria were included in final systematic review and meta-analysis. Data were extracted using a standardized data extraction checklist and the analyses were conducted using STATA version 14. The Cochrane Q test statistic and I2 tests were used to assess heterogeneity. Results The overall magnitude of foot ulcer was 12.98% (95%CI: 7.81–18.15) in diabetic patients in Ethiopia. Sub-group analyses revealed highest prevalence in Addis Ababa (19.31% (95%CI: 2.7. 41.37)). Foot ulcer was significantly associated with rural residence (OR = 2.72, 95%, CI: 1.84–4.01)), presence of callus on the feet ((OR = 12.67, 95%, CI: 6.47–24.79)), a body mass index of ≥24.5 ((OR = 2.68, 95%, CI: 1.58–4.56)), poor self- care practice ((OR = 1.47, 95%CI: 1.25–1.73)), type I diabetes mellitus ((OR = 0.42, 95%, CI: 0.22–0.79)), staying with DM for < 10 years ((OR = 0.23, 95%, CI: 0.11–0.50)), and age < 45 years ((OR = 0.44, 95%, CI: 0.21–0.92)). Conclusion The prevalence of diabetic foot ulcers in Ethiopia is relatively low, although its trend is increasing from time to time. Socio-demographic factors, body weight, and healthcare practice contribute to the development of diabetic foot ulcers. Appropriate interventions towards patient self-care practice, lifestyle modification and follow-up are wanted to prevent diabetic foot ulcers.
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López-de-Andrés A, Jiménez-García R, Esteban-Vasallo MD, Hernández-Barrera V, Aragon-Sánchez J, Jiménez-Trujillo I, de Miguel-Diez J, Palomar-Gallego MA, Romero-Maroto M, Perez-Farinos N. Time Trends in the Incidence of Long-Term Mortality in T2DM Patients Who Have Undergone a Lower Extremity Amputation. Results of a Descriptive and Retrospective Cohort Study. J Clin Med 2019; 8:jcm8101597. [PMID: 31581755 PMCID: PMC6832955 DOI: 10.3390/jcm8101597] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/20/2019] [Accepted: 09/30/2019] [Indexed: 01/22/2023] Open
Abstract
(1) Background: The aims of this study were to examine the incidence of lower extremity amputations (LEAs) among patients with type 2 diabetes mellitus (T2DM) and to compare the mortality risk of diabetic individuals who underwent LEA with age and sex-matched diabetic individuals without LEA. (2) Methods: We performed a descriptive observational study to assess the trend in the incidence of LEA and a retrospective cohort study to evaluate whether undergoing LEA is a risk factor for long-term mortality among T2DM patients. Data were obtained from the Hospital Discharge Database for the Autonomous Community of Madrid, Spain (2006–2015). (3) Results: The incidence rates of major below-knee and above-knee amputations decreased significantly from 24.9 to 17.1 and from 63.9 to 48.2 per 100000 T2DM individuals from 2006 to 2015, respectively. However, the incidence of minor LEAs increased over time. Mortality was significantly higher among T2DM patients who underwent LEA compared with those who did not undergo this procedure (HR 1.75; 95% CI 1.65–1.87). Male sex, older age, and comorbidity were independently associated with higher mortality after LEA. (4) Conclusions: Undergoing a LEA is a significant risk factor for long term mortality among T2DM patients, and those who underwent a major above-knee LEAs have the highest risk.
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Affiliation(s)
- Ana López-de-Andrés
- Preventive Medicine and Public Health Teaching and Research Unit, Health Sciences Faculty, Rey Juan Carlos University, 28922 Madrid, Spain.
| | - Rodrigo Jiménez-García
- Department of Public Health & Maternal and Child Health, Faculty of Medicine, Universidad Complutense de Madrid, 28040 Madrid, Spain.
| | | | - Valentin Hernández-Barrera
- Preventive Medicine and Public Health Teaching and Research Unit, Health Sciences Faculty, Rey Juan Carlos University, 28922 Madrid, Spain.
| | - Javier Aragon-Sánchez
- Department of Surgery, Diabetic Foot Unit, La Paloma Hospital, 35005 Las Palmas de Gran Canaria, Spain.
| | - Isabel Jiménez-Trujillo
- Preventive Medicine and Public Health Teaching and Research Unit, Health Sciences Faculty, Rey Juan Carlos University, 28922 Madrid, Spain.
| | - Javier de Miguel-Diez
- Respiratory Department, Hospital General Universitario Gregorio Marañón, Facultad de Medicina, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), 28009 Madrid, Spain.
| | - Maria A Palomar-Gallego
- Basic Science Department, Health Sciences Faculty, Rey Juan Carlos University, 28922 Madrid, Spain.
| | - Martin Romero-Maroto
- Medical Department, Health Sciences Faculty, Rey Juan Carlos University, 28922 Madrid, Spain.
| | - Napoleón Perez-Farinos
- Department of Public Health and Psychiatry, Faculty of Medicine, Universidad de Malaga, 29071 Malaga, Spain.
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McCosker L, Tulleners R, Cheng Q, Rohmer S, Pacella T, Graves N, Pacella R. Chronic wounds in Australia: A systematic review of key epidemiological and clinical parameters. Int Wound J 2019; 16:84-95. [PMID: 30259680 PMCID: PMC7948920 DOI: 10.1111/iwj.12996] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 08/31/2018] [Indexed: 12/12/2022] Open
Abstract
Chronic wounds are a significant problem in Australia. The health care-related costs of chronic wounds in Australia are considerable, equivalent to more than AUD $3.5 billion, approximately 2% of national health care expenditure. Chronic wounds can also have a significant negative impact on the health-related quality of life of affected individuals. Studies have demonstrated that evidence-based care for chronic wounds improves clinical outcomes. Decision analytical modelling is important in confirming and applying these findings in the Australian context. Epidemiological and clinical data on chronic wounds are required to populate decision analytical models. Although epidemiological and clinical data on chronic wounds in Australia are available, these data have yet to be systematically summarised. To address these omissions and clarify the state of existing evidence, we conducted a systematic review of the literature on key epidemiological and clinical parameters of chronic wounds in Australia. A total of 90 studies were selected for inclusion. This paper presents a synthesis of the evidence on the prevalence and incidence of chronic wounds in Australia, as well as rates of infection, hospitalisation, amputation, healing, and recurrence.
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Affiliation(s)
- Laura McCosker
- Australian Centre for Health Services Innovation (AusHSI), School of Public Health and Social Work, Faculty of HealthQueensland University of Technology (QUT)Kelvin GroveQueenslandAustralia
| | - Ruth Tulleners
- Australian Centre for Health Services Innovation (AusHSI), School of Public Health and Social Work, Faculty of HealthQueensland University of Technology (QUT)Kelvin GroveQueenslandAustralia
| | - Qinglu Cheng
- Australian Centre for Health Services Innovation (AusHSI), School of Public Health and Social Work, Faculty of HealthQueensland University of Technology (QUT)Kelvin GroveQueenslandAustralia
| | - Stefan Rohmer
- Australian Centre for Health Services Innovation (AusHSI), School of Public Health and Social Work, Faculty of HealthQueensland University of Technology (QUT)Kelvin GroveQueenslandAustralia
| | - Tamzin Pacella
- Australian Centre for Health Services Innovation (AusHSI), School of Public Health and Social Work, Faculty of HealthQueensland University of Technology (QUT)Kelvin GroveQueenslandAustralia
| | - Nick Graves
- Australian Centre for Health Services Innovation (AusHSI), School of Public Health and Social Work, Faculty of HealthQueensland University of Technology (QUT)Kelvin GroveQueenslandAustralia
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Sen CK. Human Wounds and Its Burden: An Updated Compendium of Estimates. Adv Wound Care (New Rochelle) 2019; 8:39-48. [PMID: 30809421 PMCID: PMC6389759 DOI: 10.1089/wound.2019.0946] [Citation(s) in RCA: 504] [Impact Index Per Article: 100.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 01/15/2019] [Indexed: 12/11/2022] Open
Abstract
Significance: A 2018 retrospective analysis of Medicare beneficiaries identified that ∼8.2 million people had wounds with or without infections. Medicare cost estimates for acute and chronic wound treatments ranged from $28.1 billion to $96.8 billion. Highest expenses were for surgical wounds followed by diabetic foot ulcers, with a higher trend toward costs associated with outpatient wound care compared with inpatient. Increasing costs of health care, an aging population, recognition of difficult-to-treat infection threats such as biofilms, and the continued threat of diabetes and obesity worldwide make chronic wounds a substantial clinical, social, and economic challenge. Recent Advances: Chronic wounds are not a problem in an otherwise healthy population. Underlying conditions ranging from malnutrition, to stress, to metabolic syndrome, predispose patients to chronic, nonhealing wounds. From an economic point of view, the annual wound care products market is expected to reach $15-22 billion by 2024. The National Institutes of Health's (NIH) Research Portfolio Online Reporting Tool (RePORT) now lists wounds as a category. Future Directions: A continued rise in the economic, clinical, and social impact of wounds warrants a more structured approach and proportionate investment in wound care, education, and related research.
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Affiliation(s)
- Chandan K. Sen
- Department of Surgery, Indiana University Health Comprehensive Wound Center, Indianapolis, Indiana
- Editor-in-Chief, Advances in Wound Care
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Commons RJ, Raby E, Athan E, Bhally H, Chen S, Guy S, Ingram PR, Lai K, Lemoh C, Lim LL, Manning L, Miyakis S, O'Reilly M, Roberts A, Sehu M, Torda A, Vicaretti M, Lazzarini PA. Managing diabetic foot infections: a survey of Australasian infectious diseases clinicians. J Foot Ankle Res 2018; 11:13. [PMID: 29651304 PMCID: PMC5894166 DOI: 10.1186/s13047-018-0256-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 03/29/2018] [Indexed: 11/10/2022] Open
Abstract
Background Diabetic foot infections (DFI) present a major morbidity, mortality and economic challenge for the tertiary health sector. However, lack of high quality evidence for specific treatment regimens for patients with DFIs may result in inconsistent management. This study aimed to identify DFI caseload proportion and patterns of clinical practice of Infectious Diseases (ID) Physicians and Trainees within Australia and New Zealand. Methods A cross-sectional online survey of Australian and New Zealand ID Physicians and Trainees was undertaken, to estimate the overall ID caseload devoted to patients with DFIs and assess clinicians' management practices of patients with DFIs. Results Approximately 28% (142/499) of ID Physicians and Trainees from Australia and New Zealand responded to the survey. DFI made up 19.2% of all ID consultations. Involvement in multidisciplinary teams (MDT) was common as 77.5% (93/120) of those responding indicated their patients had access to an inpatient or outpatient MDT. Significant heterogeneity of antimicrobial treatments was reported, with 82 unique treatment regimens used by 102 respondents in one scenario and 76 unique treatment regimens used by 101 respondents in the second scenario. The duration of therapy and the choice of antibiotics for microorganisms isolated from superficial swabs also varied widely. Conclusions Patients with DFIs represent a significant proportion of an ID clinician's caseload. This should be reflected in the ID training program. Large heterogeneity in practice between clinicians reflects a lack of evidence from well-designed clinical trials for patients with DFI and highlights the need for management guidelines informed by future trials.
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Affiliation(s)
- Robert J Commons
- 1Global and Tropical Health Division, Menzies School of Health Research and Charles Darwin University, PO Box 41096, Tiwi, Casuarina, Northern Territory Australia
| | - Edward Raby
- 2Department of Infectious Diseases, Fiona Stanley Hospital, 11 Robin Warren Dr, Murdoch, WA Australia
| | - Eugene Athan
- 3Department of Infectious Diseases, Barwon Health, Deakin University, Geelong, VIC Australia
| | - Hasan Bhally
- 4Department of Infectious Diseases, North Shore Hospital, Waitemata District Health Board, Auckland, New Zealand
| | - Sharon Chen
- 5Centre for Infectious Diseases and Microbiology Laboratory Services, ICPMR, Westmead Hospital, The University of Sydney, Westmead, NSW Australia
| | - Stephen Guy
- 6Department of Infectious Diseases, Western Health, 160 Gordon St, Footscray, VIC Australia.,7Department of Medicine, Melbourne Medical School - Western Precint, The University of Melbourne, St Albans, VIC Australia
| | - Paul R Ingram
- 2Department of Infectious Diseases, Fiona Stanley Hospital, 11 Robin Warren Dr, Murdoch, WA Australia.,8School of Pathology and Laboratory Medicine, University of Western Australia, Crawley, WA Australia
| | - Katy Lai
- 9Department of Infectious Diseases, John Hunter Hospital, Lookout Rd, New Lambton Heights, NSW Australia
| | - Chris Lemoh
- 10Monash Infectious Diseases, Dandenong Hospital, 135 David St, Dandenong, VIC Australia
| | - Lyn-Li Lim
- 11Department of Infectious Diseases, Eastern Health, 8 Arnold St, Box Hill, VIC Australia
| | - Laurens Manning
- 12School of Medicine and Pharmacology, University of Western Australia, Harry Perkins Research Institute, Fiona Stanley Hospital, PO Box 404, Bull Creek, WA Australia
| | - Spiros Miyakis
- 13Department of Infectious Diseases, The Wollongong Hospital, Loftus St, Wollongong, NSW Australia
| | - Mary O'Reilly
- 11Department of Infectious Diseases, Eastern Health, 8 Arnold St, Box Hill, VIC Australia
| | - Adam Roberts
- 14Department of Endocrinology, University Hospital Geelong, Bellerine St, Geelong, VIC Australia
| | - Marjoree Sehu
- 15Infection Management Service, Princess Alexandra Hospital, 199 Ipswich Rd, Woolloongabba, QLD Australia.,16University of Queensland, St Lucia, QLD Australia
| | - Adrienne Torda
- 17Department of Infectious Diseases, Prince of Wales Hospital, Barker St, Randwick, NSW Australia
| | - Mauro Vicaretti
- 18Department of Vascular Surgery, Westmead Hospital, Hawkesbury Rd & Darcy Rd, Westmead, NSW Australia
| | - Peter A Lazzarini
- 19School of Clinical Sciences, Queensland University of Technology, Victoria Park Rd, Kelvin Grove, QLD Australia
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15
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West M, Chuter V, Munteanu S, Hawke F. Defining the gap: a systematic review of the difference in rates of diabetes-related foot complications in Aboriginal and Torres Strait Islander Australians and non-Indigenous Australians. J Foot Ankle Res 2017; 10:48. [PMID: 29151893 PMCID: PMC5678749 DOI: 10.1186/s13047-017-0230-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Accepted: 10/25/2017] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND The Aboriginal and Torres Strait Islander community has an increased risk of developing chronic illnesses including diabetes. Among people with diabetes, foot complications are common and make a significant contribution to the morbidity and mortality associated with this disease. The aim of this review was to systematically evaluate the literature comparing the rates of diabetes related foot complications in Aboriginal and Torres Strait Islander Australians to non-Indigenous Australians. METHODS MEDLINE, EMBASE, The Cochrane Library; PUBMED and CINAHL were searched from inception until August 2016. Inclusion criteria were: published cross-sectional or longitudinal studies reporting the prevalence of diabetes related foot complications in both a cohort of Aboriginal and Torres Strait Islander Australians and a cohort of one other Australian population of any age with diabetes. Risk of bias was assessed using the STROBE tool. RESULTS Eleven studies including a total of 157,892 participants were included. Studies were set in Queensland, the Northern Territory and Western Australia, primarily in rural and remote areas. Aboriginal and Torres Strait Islander Australians experienced substantially more diabetes related foot complications with the mean age up to 14 years younger than non-Indigenous Australians. Aboriginality was associated with increased risk of peripheral neuropathy, foot ulceration and amputation. In several studies, Aboriginal and Torres Strait Islander Australians accounted for the vast majority of diabetes related foot complications (up to 91%) while comprising only a small proportion of the regional population. Reporting quality as assessed with the STROBE tool showed underreporting of: methods, sample description and potential sources of bias. There are no data available for some Australian states and for specific types of diabetes related foot complications. CONCLUSIONS Aboriginal and Torres Strait Islander Australians have a 3-6 fold increased likelihood of experiencing a diabetes related foot complication compared to non-Indigenous Australians. Evidence-based, culturally appropriate screening and intervention programs and improved access to effective health care services are required to prevent a widening of the gap in diabetes related foot complications between Aboriginal and Torres Strait Islander and non-Indigenous Australians.
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Affiliation(s)
- Matthew West
- Discipline of Podiatry, Faculty of Health and Medicine, University of Newcastle, Box 127, Ourimbah, PO 2258 Australia
| | - Vivienne Chuter
- Discipline of Podiatry, Faculty of Health and Medicine, University of Newcastle, Box 127, Ourimbah, PO 2258 Australia
| | - Shannon Munteanu
- Discipline of Podiatry, School of Allied Health, College of Science, Health and Engineering, La Trobe University, Melbourne, Australia
- La Trobe Sport and Exercise Medicine Research Centre, College of Science, Health and Engineering, La Trobe University, Melbourne, Australia
| | - Fiona Hawke
- Discipline of Podiatry, Faculty of Health and Medicine, University of Newcastle, Box 127, Ourimbah, PO 2258 Australia
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Jia L, Parker CN, Parker TJ, Kinnear EM, Derhy PH, Alvarado AM, Huygens F, Lazzarini PA. Incidence and risk factors for developing infection in patients presenting with uninfected diabetic foot ulcers. PLoS One 2017; 12:e0177916. [PMID: 28545120 PMCID: PMC5435321 DOI: 10.1371/journal.pone.0177916] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 05/05/2017] [Indexed: 01/13/2023] Open
Abstract
OBJECTIVE There is a paucity of research on patients presenting with uninfected diabetic foot ulcers (DFU) that go on to develop infection. We aimed to investigate the incidence and risk factors for developing infection in a large regional cohort of patients presenting with uninfected DFUs. METHODS We performed a secondary analysis of data collected from a validated prospective state-wide clinical diabetic foot database in Queensland (Australia). Patients presenting for their first visit with an uninfected DFU to a Diabetic Foot Service in one of thirteen Queensland regions between January 2012 and December 2013 were included. Socio-demographic, medical history, foot disease history, DFU characteristics and treatment variables were captured at the first visit. Patients were followed until their DFU healed, or if their DFU did not heal for 12-months, to determine if they developed a foot infection in that period. RESULTS Overall, 853 patients were included; mean(standard deviation) age 62.9(12.8) years, 68.0% male, 90.9% type 2 diabetes, 13.6% indigenous Australians. Foot infection developed in 342 patients for an overall incidence of 40.1%; 32.4% incidence in DFUs healed <3 months, 55.9% in DFUs healed between 3-12 months (p<0.05). Independent risk factors (Odds Ratio (95% confidence interval)) for developing infection were: DFUs healed between 3-12 months (2.3 (1.6-3.3)), deep DFUs (2.2 (1.2-3.9)), peripheral neuropathy (1.8 (1.1-2.9)), previous DFU history (1.7 (1.2-2.4)), foot deformity (1.4 (1.0-2.0)), female gender (1.5 (1.1-2.1)) and years of age (0.98 (0.97-0.99)) (all p<0.05). CONCLUSIONS A considerable proportion of patients presenting with an uninfected DFU will develop an infection prior to healing. To prevent infection clinicians treating patients with uninfected DFUs should be particularly vigilant with those presenting with deep DFUs, previous DFU history, peripheral neuropathy, foot deformity, younger age, female gender and DFUs that have not healed by 3 months after presentation.
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Affiliation(s)
- Limin Jia
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
- Department of Endocrinology, Ningxia People’s Hospital, Yinchuan, Ningxia Hui Autonomous Region, China
| | - Christina N. Parker
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
- School of Nursing, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Tony J. Parker
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Ewan M. Kinnear
- Allied Health Research Collaborative, Metro North Hospital & Health Service, Brisbane, Queensland, Australia
| | - Patrick H. Derhy
- Clinical Access and Redesign Unit, Queensland Health, Brisbane, Queensland, Australia
| | - Ann M. Alvarado
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Flavia Huygens
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Peter A. Lazzarini
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
- Allied Health Research Collaborative, Metro North Hospital & Health Service, Brisbane, Queensland, Australia
- School of Clinical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
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Baba M, Davis WA, Norman PE, Davis TME. Temporal changes in the prevalence and associates of diabetes-related lower extremity amputations in patients with type 2 diabetes: the Fremantle Diabetes Study. Cardiovasc Diabetol 2015; 14:152. [PMID: 26684912 PMCID: PMC4683723 DOI: 10.1186/s12933-015-0315-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 12/04/2015] [Indexed: 12/14/2022] Open
Abstract
Background
To determine temporal changes in the prevalence and associates of lower extremity amputation (LEA) complicating type 2 diabetes. Methods Baseline data from the longitudinal observational Fremantle Diabetes Study (FDS) relating to LEA and its risk factors collected from 1296 patients recruited to FDS Phase 1 (FDS1) from 1993 to 1996 and from 1509 patients recruited to FDS Phase 2 (FDS2) from 2008 to 2011 were analysed. Multiple logistic regression was used to determine associates of prevalent LEA in individual and pooled phases. Generalised linear modelling was used to examine whether diabetes related LEA prevalence and its associates had changed between Phases. Results There were 15 diabetes-related LEAs at baseline in FDS1 (1.2 %) and 15 in FDS2 (1.0 %; P = 0.22 after age, sex and race/ethnicity adjustment). In multivariable analysis, independent associates of a baseline LEA in FDS1 were a history of vascular bypass surgery or revascularisation, urinary albumin:creatinine ratio, peripheral sensory neuropathy and cerebrovascular disease (P ≤ 0.035). In FDS2, prevalent LEA was independently associated with a history of vascular bypass surgery or revascularisation, past hospitalisation for/current foot ulcer and fasting serum glucose (P ≤ 0.001). In pooled analyses, a history of vascular bypass or revascularisation, past hospitalisation for/current foot ulcer at baseline, urinary albumin:creatinine ratio (P < 0.001), as well as FDS Phase as a binary variable [odds ratio (95 % confidence interval): 0.28 (0.09–0.84) for FDS2 vs FDS1, P = 0.023] were associated with a lower risk of LEA at study entry. Conclusions The risk of prevalent LEA in two cohorts of patients with type 2 diabetes from the same Australian community fell by 72 % over a 15-year period after adjustment for important between-group differences in diabetes-related and other variables. This improvement reflects primary care foot health-related initiatives introduced between Phases, and should have important individual and societal benefits against a background of a progressively increasing diabetes burden.
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Affiliation(s)
- Mendel Baba
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, PO Box 480, Fremantle, WA, 6959, Australia. .,Podiatric Medicine Unit, University of Western Australia, Crawley, Perth, WA, Australia.
| | - Wendy A Davis
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, PO Box 480, Fremantle, WA, 6959, Australia.
| | - Paul E Norman
- School of Surgery, University of Western Australia, Fremantle Hospital, Fremantle, WA, Australia.
| | - Timothy M E Davis
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, PO Box 480, Fremantle, WA, 6959, Australia.
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