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| 2. |
- Bergstrand, Sara, et al.
(författare)
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Microcirculatory responses of sacral tissue in healthy individuals and in patients on different pressure-redistribution mattresses
- 2015
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Ingår i: Journal of Wound Care. - : Mark Allen Group. - 0969-0700 .- 2052-2916. ; 24:8, s. 346-358
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Tidskriftsartikel (refereegranskat)abstract
- Objective: The aim of this study was to explore the interaction between interface pressure and pressure-induced vasodilation and reactive hyperemia with different pressureredistribution mattresses.Method: A cross-sectional study was performed with a convenience sample of 42 healthy individuals between 18 and 64 years of age, 38 healthy individuals 65 years or older, and 35 inpatients 65 years or older at a university hospital in Sweden. Blood flow was measured at depths of 1 mm, 2 mm, and 10 mm using a combined system of laser Doppler flowmetry and photoplethysmography. The blood flow, interface pressure and skin temperature were measured in the sacral tissue before, during, and after load while lying on one standard hospital mattress and three different pressure-redistribution mattresses.Results: There were significant differences between the three foam mattresses with regard to average sacral pressure, peak sacral pressure, and local probe pressure with the lowest values at the visco-elastic foam/air mattress (23.5 ± 2.5 mmHg, 49.3 ± 11.1 mmHg, 29.2 ± 14.0 mmHg respectively). A greater proportion of subjects had affected blood flow in terms of lack of pressure-induced vasodilation on the visco-elastic foam/air mattress compared to the alternating pressure mattress at tissue depths of 2 mm (39.0% vs. 20.0%, respectively) and 10 mm (56.9 % vs. 35.1%, respectively). Eleven individuals, including subjects in all three subject groups were identified with no pressure-induced vasodilation or reactive hyperemia in any mattress, and this was considered a high-risk blood flow response.Conclusion: Interface pressure magnitudes considered not harmful during pressure-exposure lying on different pressure-redistribution mattresses can affect the microcirculation in different tissue structures. Despite having the lowest pressure values compared to the other mattresses, the visco-elastic foam/air mattress had the highest proportion of subjects with decreased blood flow indicating a more affected blood flow. Three young healthy individuals were identified with the high-risk blood flow response, indicating an innate vulnerability to pressure exposure and may not benefit from pressure-redistribution mattresses. Finally it was shown that the evaluation of pressure-redistribution support surfaces in terms of mean blood flow during and after tissue exposure is not feasible but assessment of pressure-induced vasodilation and reactive hyperemia could be a new possibility to assess individualized physiological measurements of mechanisms known to be related to pressure ulcer development.
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| 3. |
- Blomstrand, Edvin, 1993, et al.
(författare)
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Clinical investigation of use of an antimicrobial peptide hydrogel wound dressing on intact skin
- 2023
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Ingår i: Journal of Wound Care. - 2052-2916 .- 0969-0700. ; 32:6, s. 368-375
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Tidskriftsartikel (refereegranskat)abstract
- A material with the ability to rapidly eradicate bacteria via a contact-killing mechanism has the benefit of a more localised treatment that is easy to implement when needed to prevent or treat a bacterial infection. Here, we present an antimicrobial material based on covalently attached antimicrobial peptides (AMPs) to a soft amphiphilic hydrogel. This results in a material that exhibits an antimicrobial effect based on contact-killing. In this study, the antimicrobial efficacy of the AMP-hydrogel was investigated by observing the changes in total bioburden on the intact skin of healthy human volunteers when the AMP-hydrogel dressing was placed on the forearm for three hours. The AMP-hydrogel significantly reduced the bioburden on the skin from a mean value of 1200CFU/cm2 for the untreated skin to 23CFU/cm2. Biocompatibility evaluations of the AMP-hydrogel showed no sign of cytotoxicity, acute systemic toxicity, irritation or sensitisation, demonstrating the safety of the AMP-hydrogel as a potential wound dressing. Leachability studies confirmed no release of AMPs and that the antimicrobial effect was localised to the surface of the hydrogels, demonstrating a pure contact-killing mode of action.
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| 4. |
- Ebbeskog, B, et al.
(författare)
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A follow-up study of leg ulcer patients in south Stockholm
- 1999
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Ingår i: Journal of wound care. - : Mark Allen Group. - 0969-0700 .- 2052-2916. ; 8:4, s. 170-4
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Tidskriftsartikel (refereegranskat)abstract
- The objective of this study was to follow up patients with leg ulcers, previously identified in an epidemiological study in South Stockholm. Rate of healing, non-healing, recurrence, amputation and mortality were recorded. A total of 254 patients were identified for follow-up after 18 months, using a questionnaire; at the time of the follow-up study, 61% of the ulcers were healed, 29% of the patients still had open ulcers, and 8% of the ulcers had recurred after healing. During this period, 20% of the patients had died, with arterial disease (39%) being more common than venous insufficiency. A further objective was to investigate 21 patients with non-healed venous leg ulcers by means of a structured assessment instrument, and to study if wound healing could be encouraged by using a triple-layer bandage for three months. Patients with non-healed venous leg ulcers treated in community care were recruited for assessment by means of a standardised form and given a triple-layer bandaging treatment for a three-month period. Two ulcers had healed and nine ulcers had improved and were healing. In the group of patients with healed or improved ulcers, five had normal mobility. Venous aetiology was also more common than arterial aetiology
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| 5. |
- Elgzyri, T, et al.
(författare)
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Can duplex arterial ultrasonography reduce unnecessary angiography?
- 2008
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Ingår i: Journal of Wound Care. - : Mark Allen Group. - 0969-0700 .- 2052-2916. ; 17:11, s. 497-500
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To assess the value of arterial duplex ultrasound, which assesses the location and severity of arterial disease, in determining whether invasive vascular intervention is required.METHOD: A total of 166 consecutive diabetic patients presenting at a multidisciplinary foot clinic with severe peripheral vascular disease, with or without a foot ulcer, were included in this prospective study. The choice of vascular intervention was based on the results of a duplex ultrasound examination. Subjects were followed up for two years, and their clinical management, vascular assessments and interventions given, and patient outcomes were recorded in a specially designed protocol.RESULTS: Based on findings of the duplex ultrasound, it was recommended that 55 patients (33%) should undergo angioplasty (percutaneous transluminal angioplasty [PTA] and/or subintimal recanalisation), 64 patients (39%) diagnostic angiography and 47 patients (28%) medical treatment only, thereby avoiding unnecessary angiography and its potential complications. Diagnostic angiography was recommended when the duplex ultrasound results were inconclusive. Fifty-two of the 55 patients recommended angiography with simultaneous angioplasty had an angiography; of these, 42 (81%) then had an angioplasty. Fifty-seven of the 64 patients with inconclusive results had an angiography. Of these, 23 (40%) subsequently had angioplasty, only 10 (18%) had reconstructive surgery and 24 (42%) had a diagnostic angiography only.CONCLUSION: Arterial duplex ultrasound may assist evaluations of the need for and type of invasive vascular intervention in patients with an ischaemic diabetic foot. It can thus help avoid diagnostic angiographies that do not result in vascular intervention. However, such decision-making remains at the discretion of the vascular surgeon and radiologist.
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| 7. |
- Eliasson, B, et al.
(författare)
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Debriding effect of amino acid-buffered hypochlorite on hard-to-heal wounds covered by devitalised tissue: pilot study
- 2021
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Ingår i: Journal of wound care. - : Mark Allen Group. - 0969-0700 .- 2052-2916. ; 30:6, s. 455-464
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Tidskriftsartikel (refereegranskat)abstract
- Wounds such as lower extremity ulcers are serious, costly and frequently hard to heal. Guidelines conclude that new dressings and treatments generally fail to show superiority compared with standard of care. Several mechanisms are probably responsible for impaired healing of hard-to-heal wounds, including inflammation and infection. Amino acid-buffered hypochlorite has presumed antiseptic and antibacterial properties and has been shown to be useful in the treatment of diabetic foot ulcers (DFUs). We evaluated the debriding effect of amino acid-buffered hypochlorite (ChloraSolv) on full skin hard-to-heal lower extremity ulcers covered with devitalised tissue (≥50%), with six applications over 5 weeks and follow-up at 12 weeks. Method: This was an open-label, single-arm, multicentre, pre-market pilot investigation. We recruited subjects with a lower extremity ulcer, covered with devitalised tissue (≥50%), who were candidates for cleansing and debridement/desloughing. There was a weekly application of the investigational device for five weeks. Follow-up for wound status evaluation was performed at 12 weeks from baseline. Results: We evaluated 57 subjects (33 males, 24 females, median age 73 years, range 51–90 years) (intention-to-treat). Of these, 61.4% had a leg ulcer and 38.6% a foot ulcer. The median wound size at baseline was 7.7cm2 (range 2.1–52cm2) with devitalised tissue coverage of 76.5%. After 5 weeks, a decrease of 72.7% in devitalised tissue was seen, and 71.4% of the subjects showed a decrease in devitalised tissue of ≥50% (evaluated independently using PictZar). At 12 weeks' follow-up the decrease in devitalised tissue was 84.4%. Wound-related pain was reported by ten subjects, resulting in 17 adverse events (AEs). Among these, 12 AEs from eight subjects were recorded as possibly or probably related to the investigational device and one AE was reported to have a causal relationship with the investigational device. Conclusion: This clinical study suggests that amino acid-buffered hypochlorite can be effective and well tolerated in the treatment of hard-to-heal lower extremity ulcers to dissolve and remove devitalised tissue.
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| 8. |
- Fourie, Anika, et al.
(författare)
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Development of prone positioning and skin damage prevention digital education : the PRONEtect project
- 2023
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Ingår i: Journal of Wound Care. - : MA Healthcare Ltd.. - 0969-0700 .- 2052-2916. ; 32:9, s. 570-578
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: The incidence of skin/tissue damage, such as pressure ulcers, remains high in mechanically ventilated patients in the prone position. According to guidelines, critically ill patients with acute respiratory distress syndrome (ARDS) should be prone for at least 12-16 hours to improve oxygenation and decrease mortality. Therefore, educating clinicians on how to reposition and manage the patient safely in a prone position plays a vital role in preventing adverse events. This project aimed to develop accessible online educational content to assist clinicians in safely executing the prone manoeuvre and minimise skin/tissue damage.METHOD: The development of the educational content was based on: a gap analysis and comprehensive review of available educational resources; evidence-based scientific literature; advice from international experts; and a qualitative study exploring the learning needs of 20 clinicians in Belgium and Sweden between February-August 2022.RESULTS: Volunteer clinicians assisted with the creation of eight simulation videos which were professionally filmed and edited. The interactive videos included the supine-to-prone and prone-to-supine manoeuvres, endotracheal and nasogastric tube securement, eye care, stoma care, protecting high-risk areas from pressure damage, and incontinence-associated dermatitis prevention. A prone positioning protocol, a checklist summarising the key aspects of the protocol, and teaching aids (slide deck for didactic lecturing) were developed and validated by a review of the relevant evidence-based literature and the international expert panel. A website was designed to host the content, with free user access, at www.pronetection.com.CONCLUSION: Education is one strategy towards prevention of complications of prone positioning. Accessible education could assist clinicians unfamiliar with prone positioning or current clinicians requiring refresher training to safely manage patients in this position.
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| 9. |
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| 10. |
- Gottrup, Finn, et al.
(författare)
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Antimicrobials and Non-Healing Wounds. Evidence, controversies and suggestions-key messages
- 2014
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Ingår i: Journal of Wound Care. - : Mark Allen Group. - 0969-0700 .- 2052-2916. ; 23:10, s. 477-477
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Tidskriftsartikel (refereegranskat)abstract
- This article constitutes an extraction of key messages originally presented in the Document:Antimicrobials and Non-Healing Wounds. Evidence, controversies and suggestions written by the European Wound Management Association (EWMA), and originally published by the Journal of Wound Care in 2013.All sections are shortened and some not included. For further details please refer to in the original document which can be downloaded via www.ewma.org.
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