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9 Dressing: Indications onApplications
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a
b
c d
Fig. 9.3 (a) Ulcer secondary to septic embolism. Pre- debridement. (b) After surgical debridement. Treatment with enzymatic debridement and with absorbent dress-
9.4 Conclusions
A large variety of dressing materials are currently available, and new dressings with specic and mixed properties will be continually created thanks to technological advancement. Despite the abundance of therapeutic options, it is apparent that few high-quality RCTs have been performed to evaluate wound dressings, with even fewer demonstrating a clear-cut benet of a particular dressing or treatment modality.
Until new data are received, clinicians must continue to systematically evaluate, categorize, and treat each wound using the guiding principles of debridement, managing exudates, and prevent­ing microbial colonization. Each type of ulcer should be treated with the most appropriate dressing material. The ulcer’s clinical appearance
ings. Subsequent application of VAC therapy for stimula­tion of the granulation tissue. (c) 5days after split-thickness skin graft. (d) 3weeks after skin graft
is the main parameter in determining the most suitable dressing.
References
1. Gurtner GC, Werner S, Barrandon Y, Longaker MT. Wound repair Regen. Nature. 2008;453(7193):314–21. https://doi.org/10.1038/
nature07039.
2. Gantwerker EA, Hom DB.Skin: histology and physi­ology of wound healing. Facial Plast Surg Clin North Am. 2011;19(3):441–53.
3. Kirschner CM, Anseth KS. Hydrogels in health­care: from static to dynamic material microenviron­ments. Acta Mater. 2013;61(3):931–44. https://doi.
org/10.1016/j.actamat.2012.10.037.
4. Jones RE, Foster DS, Longaker MT.Management of chronic Wounds-2018. JAMA. 2018;320(14):1481–2.
https://doi.org/10.1001/jama.2018.12426. PMID:
30326512
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G. Turriziani et al.
5. Ayello EA, Cuddigan JE.Debridement: controlling the necrotic/cellular burden. Adv Skin Wound Care. 2004;17(2):66–75.
6. Broughton G 2nd, Janis JE, Attinger CE.A brief his­tory of wound care. Plast Reconstr Surg. 2006;117(7 Suppl):6S–11S.
7. Ovington LG. Hanging wet-to-dry dressings out to dry. Home Healthc Nurse. 2001;19(8):477–83.
8. Lawrence JC.Dressings and wound infection. Am J Surg. 1994;167(1A):21S–4S.
9. Vermeulen H, Ubbink D, Goossens A, de Vos R, Legemate D.Dressings and topical agents for surgi­cal wounds healing by secondary intention. Cochrane Database Syst Rev. 2004;2:CD003554.
10. Ubbink DT, Vermeulen H, Goossens A, Kelner RB, Schreuder SM, Lubbers MJ. Occlusive vs gauze dressings for local wound care in surgical patients: a randomized clinical trial. Arch Surg. 2008;143(10):950–5.
11. Ovington L.The well-dressed wound: an overview of dressing types. Wounds. 1998;10(Suppl A):1A–11A.
12. Klasen HJ.A historical review of the use of silver in the treatment of burns. II.Renewed interest for silver. Burns. 2000;26:131–8.
13. Seaman S.Dressing selection in chronic wound man­agement. J Am Podiatr Med Assoc. 2002;92(1):24–33.
14. Thomas S. Surgical dressings and wound manage­ment. Cardiff, South Wales: Medetec Publications;
2010.
15. Robinson BJ. The use of a hydrobre dressing in wound management. J Wound Care. 2000;9(1):32–4.
16. Barnea Y, Amir A, Leshem D, Zaretski A, Weiss J, Shar R, Gur E.Clinical comparative study of aqua­cel and parafn gauze dressing for split-skin donor site treatment. Ann Plast Surg. 2004;53(2):132–6.
17. Warriner R, Burrell R. Infection and the chronic wound: a focus on silver. Adv Skin Wound Care. 2005;18(Suppl 1):2–12.
18. Tomaselli N.The role of topical silver preparations in wound healing. J Wound Ostomy Continence Nurs. 2006;33(4):367–78.
19. Durani P, Leaper D.Povidone-iodine: use in hand dis­infection, skin preparation and antiseptic irrigation. Int Wound J. 2008;5(3):376–87.
20. Davis DA, Arpey CJ.Porcine heterografts in derma­tologic surgery and reconstruction. Dermatol Surg. 2000;26:76–80.
21. Burke JF, Yannas IV, Quinby WC Jr, etal. Successful use of a physiologically acceptable articial skin in the treatment of extensive burn injury. Ann Surg. 1981;194:413–28.
22. Postlethwaite AE, Seyer JM, Kang AH.Chemotactic attraction of human broblasts to type I, II, and III collagens and collagen-derived peptides. Proc Natl Acad Sci U S A. 1978;75:871–5.
23. Voytik-Harbin SL, Brightman AO, Kraine MR, et al. Identication of extractable growth factors from small intestinal submucosa. J Cell Biochem. 1997;67:478–91.
24. O’Connor NE, Mulliken JB, Banks-Schlegel S, et al. Grafting of burns with cultured epithelium prepared from autologous epidermal cells. Lancet. 1981;1:75–8.
25. Teepe RG, Keobrugge EJ, Ponec M, etal. Fresh ver­sus cryopreserved cultured allografts for the treatment of chronic skin ulcers. Br J Dermatol. 1990;122:81–9.
26. Jones JE, Nelson EA, Al-Hity A. Skin graft­ing for venous leg ulcers. Cochrane Database Syst Rev. 2013;1:CD001737. https://doi.
org/10.1002/14651858.CD001737.pub4.
27. Perkins K, Davey RB, Wallis KA.Silicone gel: a new treatment for burn scars and contractures. Burns Incl Therm Inj. 1983;9(3):201–4.
28. Expert Working Group. Vacuum assisted closure: rec­ommendations for use. A consensus document. Int Wound J. 2008;5(Suppl 4):iii–19.
29. Lo Torto F, Ruggiero M, Parisi P, Borab Z, Sergi M, Carlesimo B.The effectiveness of negative pressure therapy on infected wounds: preliminary results. Int Wound J. 2017;14(06):909–14.
30. Hinchliffe RJ, Valk GD, Apelqvist J, Armstrong DG, Bakker K, Game FL, Hartemann-Heurtier A, Löndahl M, Price PE, van Houtum WH, Jeffcoate WJ.A sys­tematic review of the effectiveness of interventions to enhance the healing of chronic ulcers of the foot in diabetes. Diabetes Metab Res Rev. 2008;24(Suppl
1):S119–44.
31. Körber A, Franckson T, Grabbe S, Dissemond J. Vacuum assisted closure device improves the take of mesh grafts in chronic leg ulcer patients. Dermatology. 2008;216:250–6.
32. Geller SM, Longton JA.Ulceration of pyoderma gan­grenosum treated with negative pressure wound ther­apy. J Am Podiatr Med Assoc. 2005;95:171–4.
Dressing inBurns
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AntongiulioMangia, AgostinoRodda, andAntonioDi Lonardo
10
10.1 Introduction
Burn wound healing depends on the depth and surface involved, cause of damage (thermal, chemical, or electric), general condition of the patient, and associated comorbidities; therefore, the rst evaluation of wound dressing approach requires an initial assessment of the burn based on depth, extent, and anatomical site [1, 2].
10.2 Full-Thickness Burns
Burn injury may involve one or both skin layers and may extend deep into the subcutaneous fat, muscles, and even bony structures. Deep partial­thickness (dermal burns), extending into the reticular dermis, generally will take three or more weeks to complete healing process. When pres­sure is applied to the burn, capillary rell appears slow or absent. By the second day, the wound may be white-colored and is usually fairly dry. As a rule, deep partial-thickness burns that would not heal within 3 weeks should be completely excised and grafted.
Full-thickness burns involve entirely the der­mis and extend deep into subcutaneous tissue. These wounds are insensitive to light touch and pinprick, usually have a dry and white appear­ance, and should be excised and grafted (Fig.10.1). Autologous skin grafting (autografts) is still the rst choice for treatment and involves the transplantation of healthy skin from the patient’s undamaged donor site to cover the wound site. Autograft can be harvested full­thickness, consisting of epidermis and dermis or split-thickness, consisting of the epidermis and upper part of the dermis. Despite the possibility of amplication of the graft with meshes, lack of unharmed skin in a severely burned patient con­stitutes therefore a concrete limitation to the autograft; furthermore, deep burns or presence of
A. Mangia · A. Di Lonardo (*) U.O.C.Burn Center A.O.U.Pisana, University of Pisa, Pisa, Italy e-mail: antdil@inwind.it
A. Rodda Plastic Surgery Clinic, ASUGI, University of Trieste, Trieste, Italy
© The Author(s), under exclusive license to Springer Nature Switzerland AG 2023 M. Maruccia et al. (eds.), Pearls and Pitfalls in Skin Ulcer Management,
https://doi.org/10.1007/978-3-031-45453-0_10
Fig. 10.1 Full-thickness burn of legs with areas of carbonization
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infected tissue do not predispose to autograft, and in these cases, coverage with skin substitutes should be considered, with allo- or xenograft or advanced dressings.
Skin substitutes could protect large burn wounds when donor skin is limited, enhancing wound healing and reducing inammatory responses and subsequent scarring [3].
10.2.1 Skin Substitutes
Skin substitutes can be categorized into biologi­cal ones, synthetic substitutes, or a combination of both.
Biological substitutes can be further catego­rized into:
1. Allografts: The cadaveric skin graft is a stan-
dard biomaterial for temporary skin replace­ment in burn patients. Cadaveric skin is able to implement wound bed preparation before autograft placement and can decrease pain and wound infection rates. Other benets of the cadaver allograft are represented by reduc­tion in uid, electrolyte, and protein loss, together with energy requirements. This graft also prevents tissues from desiccation, stimu­lates epithelialization, prepares wounds for denitive closure, and provides a dermal tem­plate for epidermal grafts [46]. Disadvantages of the cadaver skin include serious infectious disease risks (such as HIV and hepatitis, transmitted to the recipient patient) and a rejection time between 7 and 14days due to different complexes of histocompatibility by the host [7].
2. Xenografts: Graft is harvested from animals
and used to replace lost skin. Despite a large availability compared to allograft, they have a shorter rejection time and produce greater inammation [8].
3. Natural scaffolds, such as de-cellularized and
dermal human matrix: These materials are composed of a mixture of dermal elastin and collagen, free of cellular components, and their use can be associated with ultra-thin split-thickness grafts (0.1–0.2 mm), thus avoiding donor site morbidity of split-
thickness autograft and guaranteeing an equal thickness to the autograft one, minimizing at the same time scarring contracture [9]. The dermal matrix is able to support broblast inltration, keratinocyte migration, and neo­vascularization as well [10].
4. Biosynthetic wound dressings: These are increasingly employed in supercial and moderate-depth partial burns, aiming to cover the wound and optimize healing in terms of time, pain, complications, and costs. Dermal and epidermal substitutes can be applied to supercial and partial depth burns, able to guarantee a rapid dermal regeneration associ­ated with proper wound coverage and protec­tion [11].
Bilayer-composed dressings can be applied for partial depth burns management: The inner layer, for example, made of xenogeneic mate­rials (e.g., Porcine collagen [12] and bovine collagen [13]) is able to stimulate wound heal­ing, while the outer layer, usually an imperme­able silicone lm, is able to control moisture loss from the wound and prevent infections, remaining pervious to gases and transparent for a better wound evaluation. Adherence to the wound is to be achieved, by careful xing and movement reduction, to prevent dressing shearing from the wound surface and provide mechanical coverage [14]. These medications are provided in sheets, which can be cut according to the wound shape, and are to be rmly applied and xed, eventually using stitches; however, there are bilaminate biosyn­thetic dressings provided in glove shape (Fig. 10.2), with specic indication on hand localized supercial or partial deep burns and scalds. The latter, produced in different sizes to t both adults and pediatric patients, are able to reduce both healing time and pain (Figs.10.3 and 10.4), providing easier tting and less bulky dressings [15].
Furthermore, these dressings need a cau­tious selection of wound application, as previ­ous accurate debridement shall be performed, and possible infection evaluated, in order to prevent delayed healing and the need for fur­ther surgery; high costs have to be taken into consideration.
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Fig. 10.2 Supercial partial-thicknessburn of the back hand
Fig. 10.3 Biosynthetic wound dressing constructed of a silicone lm with a nylon fabric with collagen in a glove shave
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In addition, tridimensional hyaluronic acid ester matrix bilayer dressings can be used on deep and chronic wounds, but also for the adequate management of deep and partial depth burns, associated with massive tissue loss where healing process has dropped, pre­paring adequate tissues for skin grafting [16].
5. Cultured scaffolds, such as cultured epithelial graft, autologous cultured broblasts, and keratinocytes. In some massively burned patients the burns are so extensive that donor site availability is limited and human epider­mal cells from a small skin-biopsy sample can be cultured to produce coherent epithelial sheets. Nevertheless, the production of a thin sheet of epithelial cells with high production costs and risk of ulceration must be consid­ered [17].
6. Allogenic amnion, derived from fetal mem­brane, can be particularly effective if applied on partial-thickness burn wounds; it can be used as protective dressing, guaranteeing the preservation of wound bed in prevision of sec­ondary skin grafting coverage. Allogenic amnion is fragile and difcult to handle and needs sterilization processes in order to cut off biological transmission probability, as it is contaminated by denition [18].
10.3 Partial-Thickness Burns
Fig. 10.4 Biosynthetic wound dressing application and
removal at 14 days with complete re-epithelialization below
10.3.1 Supercial Burns
Burns involving only the epidermis are erythem­atous and very painful, however do not form blis­ters. Most sunburns t this category of supercial, epidermal injury. Within 3–4days, the dead epi­dermis sloughs and is replaced by regenerating keratinocytes.
Many different ointments can be applied on this type of lesion after accurate cleansing, based on antibacterial principles; silver sulfadiazine, for example, can be applied for bacteriostatic action and able to alleviate pain as well [19]; preparations containing these substances are to be applied with a 1–2 mm layer on the wound daily, until complete re-epithelialization.
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10.3.2 Supercial Partial-Thickness Burns
Supercial partial-thickness burns extend instead into the papillary dermis and characteristically form blisters. Once the blister is removed from a supercial partial-thickness burn, the wound shows up pink, wet, and hypersensitive to touch. With appropriate wound care, supercial dermal burns usually heal within 2–3weeks, without risk of scarring, furthermore do not require operation. Supercial dermal burns or graft donor site have a raw area of the body lacking epithelial cover­ing; topical antibacterial agents are not necessary [20] and require instead epithelium reconstitution through a re-epithelializing ointment, hydrogel, or alternative coverage with advanced dressings.
10.3.3 Blister Management
Management of blisters is a complicated issue. Most guidelines and studies recommend de­roong of blister, followed by its coverage with biological or modern dressing, as this was associ­ated with better recovery. One valid advantage of de-roong blisters is the possibility to visualize and assess the wound, as in some cases vesicles might hide a deep dermal burn underneath (Figs.10.5 and 10.6). Moreover, it is very com­mon for patients to present with already sheared
A. Mangia et al.
Fig. 10.6 Evacuation of vesicles with leakage of serous
blisters, either intentionally or unintentionally. Another valid reason to de-roof is that large vesi­cles impede the mobility and comfort of the patient [21]. Theoretically, de-roong with mod­ern dressing application, when available, seems to be the safest and most convenient choice: This helps avoid a deep-dermal burn hidden under vesicles, which might lead to esthetic problems as well. Modern dressing treatment or biological membranes lead to the best quality of healing and allow for excellent mobilization of the patient and his/her burned areas too. When modern dressings or biological membranes are not avail­able, snipping blisters open seems to be the next best alternative. This shares the advantages of de­roong in not impeding movement and in reduc­ing pain, and at the same time, it gives a “biologic” dressing that ensures the best moisture and seal­ing effects. Applying an antimicrobial cream with an interface ensures the prevention of infec­tion and mechanical trauma during uffy dress­ing change.
Fig. 10.5 Vesicles with serous content on supercial partial-thickness uid burns
10.3.4 Hydrogel Dressings
Advanced wound treatment is often based on controlled delivery of active substances into the burn site. Hydrogels are widely available on the market as the most ideal wound dressings with numerous advantages for burn wounds, including the ability to provide a moist and cooling envi­ronment (benecial for burn wounds) non-
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adhesiveness to wounds and the ability to absorb excess wound exudates. Additionally, hydrogels’ high-water content mimics the physiological wound conditions, favoring tissue regeneration with excellent biocompatibility, and the capabil­ity to encapsulate a variety of antimicrobial drugs. Clinically, hydrogels are used as wound debridement agents, moist dressings, and compo­nents of wound treatments. In burn wound man­agement, hydrogels act as a moisture donor and can accelerate wound healing through autolytic debridement and moisture regulation [21].
While many natural hydrogels have inherent antimicrobial properties (e.g., chitosan, β-chitin, cellulose, and dextran), many have been loaded with synthetic antibiotics and antibacterial agents including metal-ion loaded hydrogels, metallic­nanoparticle, AMP-based hydrogels, and natural polymer-based hydrogels bearing synthetic anti­microbials [22].
Biopolymers have been utilized for their development due to their non-toxic, biodegrad­able, and biocompatible properties. Hydrogels have been prepared from biopolymers such as cellulose and chitosan, by crosslinking with selected synthetic polymers resulting in improved mechanical, biological, and physicochemical properties. Although biopolymer-based hydro­gels present interesting features in the series of in vitro and in vivo studies reported for wound management, very few of them have reached clinical trials [23].
pathogenic organisms at the same time, without interfering with wound healing [24].
Indications are multiple, starting from increased infection risk wounds, various etiolo­gies ulcers, oncology wounds, and burns.
Specically, hydrober dressings can be applied to supercial dermal burns, creating a moist environment able to absorb wound exu­dates and prevent tissue infection by stimulating the formation of collagen and re-epithelization (Figs.10.7, 10.8 and 10.9).
Hydrober dressing may be left in place for up to 14days if adhered, eventually covered with
Fig. 10.7 Deep and supercial partial thickness burns of thigh without brin
10.3.5 Hydrober Dressings
Hydrober technology, based on sodium car­boxymethylcellulose layers eventually associated with the use of ionic silver, a proven broad­spectrum microbial, produces a high-absorbing and soft wound coverage medication, able to remove non-viable tissue from the area, controls bacterial infection, and supports the healing pro­cess at the same time.
Hydrober dressings, as a matter of fact, are able to absorb biolm and prevent its formation, create a barrier protecting the wound bed, and kill
Fig. 10.8 Application of carboxymethylcellulose to areas of dermal burn
Fig. 10.9 Removal of sheet and underlying re­epithelialization
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secondary absorbing dressings, as they guarantee a vertical absorption of exudate, avoiding mac­eration. If the dressing is not adherent or satu­rated, it should be removed and replaced. The evaluation of hydrober dressings adherence and wetness during the rst days may also be taken into consideration for the burn deepness assessment.
These medications shall not be used on sensi­tive or allergic to carboxymethylcellulose, nylon, or silver, when associated, with individuals.
10.3.6 Alginates
Alginate dressings, originally derived from brown seaweed and so composed of polymers of alginic acid, are able to provide a soft and exible high-absorbing medication (can absorb up to 20 times their own weight in uid). When in contact with wound exudate, they form a gel, which can be easily removed by soft irrigation, guarantee­ing normal healing processes and atraumatic dressing changes. It can be associated with other materials, particularly with silver as antibacterial adjuvant, or psyllium bers, which can contribute to swelling absorption.
Alginates are indicated for moderate to large amounts of exudate production wounds and can be left in place until 4days, shall be changed if saturated and fully gelled. The same application can be used for donor site of autograft, using the
Fig. 10.10 Complete re-epithelialization at day 14 under removal of the adherent alginate sheet
hemostatic and absorption properties of the algi­nates, which are left in place until complete re­epithelialization (in this case the removal of the alginate is quite easy) or in case of poor adhesion to the tissue due to excess exudate with transfor­mation into gel (Fig.10.10).
Alginates shall not be used on dry or necrotic wounds, like deep burns in this case, as in the absence of exudate no gel can be formed, and thus no moist healing environment.
10.4 Deep Partial-Thickness
Burns
Deep partial-thickness burns are characterized by loss of whole-thickness epidermis and part of dermis; thus, complete barrier loss makes these areas more prone to contamination and infec­tion. It is therefore of utmost importance to completely seal these wounds in order to pre­vent infection and promote healing processes [25, 26]. Raw areas are considered always con­taminated, due to the absence of mechanical skin barrier and sweat and bacterial commensals presence, both of which inhibit many patho­gens. Therefore, cleansing through pressurized irrigation is of utmost importance to wash away these bacterial contaminants and debris. After cleansing, if necrotic tissue is still present, debridement can be performed by surgical, autolytic, or enzymatic methods.
The most difcult management decision involves partial-thickness burns that are interme­diate in depth. These burns are more aptly called “indeterminate” burns, as their healing potential becomes evident with serial assessments over several days, and require careful specialist evalu­ation for the possibility of bromelain-based type of enzymatic debridement; its advantages, com­pared to the standard of care, include decreased surgical morbidity and blood loss, length of hos­pital stay, rates of infection, need for skin graft­ing, and costs [27, 28]. More importantly, this product permits eschar removal without sacric­ing viable or healthy tissue, returning entirely vital dermal or subcutaneous tissue.
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Autolytic debridement is exploited when sur­gery is not suitable for the wound type. It is not only a natural process occurring at some level in all wounds, but also highly selective, involving macrophages and proteolytic enzymes that liq­uefy and separate necrotic tissue from healthy one [23]. The use of proteolytic enzymes, in par­ticular collagenase, possibly associated with anti­biotics, is well documented in the topical treatment of ulcers and burns, where a surgical approach is not deemed practical.
Topical collagenase preparations, available for necrotic tissue debridement from ulcers and burns, contain the proteolytic enzyme collagenase, derived from Clostridium histolyti- cum; this enzyme digests denatured collagen, which is the principal constituent of necrotic tis-
Fig. 10.11 Supercial partial-thickness burns of the back of the foot
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Fig. 10.13 Application of petrolatum gauze
sue, and destroys the strands of endogenous col­lagen, which tend to anchor necrotic residues to the bed of the lesion. After the ointment applica­tion, it is helpful to cover the wound with a non­adherent gauze, a sterile dressing of parafn-based tulle, formed by an open weave gauze (Figs.10.11, 10.12 and 10.13) with a low adher­ence and allows free drainage of the wound, by permitting the passage of exudate to an absorbent secondary dressing; it also prevents the sterile covering gauze adhesion directly on the de­epithelialized area, which causes pain and removal of the newly formed epidermis. Parafn­based tulle is not medicated and is therefore ideal for use in association with local antiseptics or antibiotics. Alternatively, other medications can be applied, like white petrolatum-impregnated ne mesh or porous mesh gauze, or 10x10 cm gauze impregnated with 4g of 2 mg hyaluronic acid sodium salt cream, or again specic extract of Triticum vulgare impregnated gauze [29].
The dressing is then covered by a sterile gauze and can be held in place with a gauze bandage wrapped, applying sufcient tightness to hold the gauze in place but not so tightly as to impede circulation.
Fig. 10.12 Application of collagenase ointment
10.5 Facial Burns
For practical reasons, most facial burns are treated without dressing. These wounds may also be treated without topical medication, allowing
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the involved area to dry and form a crust. Because the dry wound is often uncomfortable and heals more slowly than moist wounds, many physi­cians prefer to use a thin layer of bland ointment combined with a topical antibiotic [30]. The oint­ment is applied to the wound after gentle cleans­ing with water once or twice daily, or more frequently as needed, particularly in a dry cli­mate. Bacitracin has activity against gram­positive bacteria. Occasionally, it may cause contact dermatitis that impedes wound healing. Alternatively, already used for more than 40years, silver sulfadiazine 1% is considered as standard therapy for conservative treatment of burn wounds [31]. Silver nitrate and silver sulfa­diazine have been widely used in wounds topical chemoprophylactic treatment, especially for burns and ulcers. Topical application of silver­containing agents can result inlocalized argyria, as well as systemic side effects in cases of greater skin areas involved. Silver sulfadiazine should be applied to small burn areas of the face and for acute treatment, in order to avoid side effects of local argyria or antibiotic resistance [32].
10.5.1 Burn Cleansing
Cleansing with gentle washing is the rst and most important step of burn wound care. Burn wounds should be cleansed to remove any debris or contamination, reducing the risk of infection or biolm formation. A Cochrane review did not nd any evidence that saline is superior to tap water for cleansing acute traumatic wounds, although the review did not specically take into consideration burn wounds [33]. In a systematic review performed by Cooper etal., three trials mentioned that saline is signicantly more advan­tageous than tap water [34]. Hospital water sup­plies are, as a matter of facts, commonly colonized with Pseudomonas Aeruginosa: Therefore, ltered tap water is preferable, and this last can be achieved by point-of-use water ltration devices.
A difference must be made regarding hydro­therapy, useful for removing skin necrosis, pre­dominantly applied using tap water, but also
A. Mangia et al.
Fig. 10.14 Hydrotherapy tub
antiseptic solutions, which are preferred after the initial acute period when burn wounds are more likely to be colonized by various microorganisms (Fig.10.14).
Wound cleansing is an important step regarding infection prevention and treatment, contributing to initial wound healing processes as well.
Irrigation, even if it is as effective as swab­bing, has proven to be signicantly more satisfac­tory to patients. Regarding clean wounds (and most burns are clean), cleansing should be per­formed as gently as possible to avoid the injury of the lower layers of epidermis, responsible for regeneration and healing.
On the other hand, in heavily contaminated or infected wounds, cleansing should be performed aggressively, thoroughly, and as frequently as possible to eliminate biolm. Antiseptics are used for clinically infected wounds to slow or halt the spreading of infection; however, they may also be applied on wounds that do not dis­play clear signs of infection, in order to prevent its onset.
Some examples of applicable antiseptics are:
• Hypochlorous solutions: They (0.5% solution
of unbuffered sodium hypochlorite) have been
recognized as effective antiseptic agents for
wounds.
• Dakin’s solution: It is a buffered solution of
0.5% NaOCl, but is cytotoxic to keratinocytes
and broblasts.
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