削痂对深Ⅱ度烧伤局部IL-8释放及创面炎性反应的影响

目的评价削痂手术对深Ⅱ度烧伤创面局部ＩＬ－８水平和炎性反应程度的影响。方法检测７例烧伤病人深Ⅱ度创面削痂手术前、手术后和未手术之创面组织在体外组织培养中释放ＩＬ－８的水平，同时通过组织病理学观察创面局部炎性反应程度。结果削痂手术后创面组织释放ＩＬ－８水平较手术前和未手术创面有显著降低，局部组织形态学观察亦显示，手术后创面的炎性反应较手术前有明显减轻，未手术创面除有大量中性粒细胞浸润外，坏死范围较手术前扩大，残留的少量皮肤附件因炎症扩大而消失。结论削痂手术能减少局部组织ＩＬ－８的释放，改善炎性反应，对防止深Ⅱ度创面组织进行性加深有积极意义。     

削痂对深Ⅱ度烧伤局部IL—8释放及创面炎性反应的影响

评价削痂手术深Ⅱ度烧伤面局部ＩＬ－８和炎性反应程度的影响。方法检测７例烧伤病人深Ⅱ度创面削闸手术前、手术后和未手术之创面组织在体外组织培养中释放ＩＬ－８的水平，同时通过组织病理学观察创面局部炎性反应程度。     

烧伤后24小时内削痂对深Ⅱ度创面局部炎症反应的影响

目的探讨烧伤后24h内行削痂手术对深Ⅱ度创面局部炎症反应以及组织损害的影响。方法选择12例烧伤患者,伤后24h内对深Ⅱ度创面行削痂手术,将患者同一创面分为3个标本采集区,即手术前、手术后和未手术区。手术前标本取自削痂术前创面,手术后和未手术区创面标本于伤后5—7d获取。采用组织培养和比色法测定创面组织释放白细胞介素(IL)8、髓过氧化物酶(MPO)和丙二醛(MDA)的水平,通过HE和Masson染色对创面组织坏死程度进行形态学观察。结果削痂手术后,患者创面组织局部释放IL8、MPO、MDA的水平分别为(6.83±1.85)μg/L、(4.07±0.87)U/g、(8.94±5.66)μmol/g,与未手术创面比较明显降低(P<0.01)。形态学观察显示,手术前创面有凝固性坏死灶;未手术创面炎症反应明显,坏死组织范围扩大;削痂手术后创面局部的炎症反应得到改善,未见坏死组织范围扩大。结论伤后24h内行削痂手术,可以改善深Ⅱ度烧伤创面局部的炎症反应,防止创面进行性加深,有利于创面及早愈合。     

伤后24小时内削痂对深Ⅱ度烧伤创面局部生长因子释放及愈合的影响

目的探讨伤后24h内削痂手术对深Ⅱ度烧伤创面局部释放表皮生长因子(EGF)、碱性成纤维细胞生长因子(FGF-2)、血小板衍生生长因子(PDGF-AB)及其对组织修复的影响.方法选12例以深Ⅱ度烧伤为主的患者,每例患者均选择相对均匀的深Ⅱ度创面作为实验创面并分为3个研究区域,即手术前、手术后和未手术实验区.伤后24h内行削痂术.术前在实验创面切取创面组织,作为手术前实验区标本,行削痂后创面均以辐照猪皮覆盖.术中部分创面保留不予手术,该保留创面作为未手术实验区.于伤后5～7d行第2次手术,分别切取经削痂处理和未手术区的创面组织,作为手术后和未手术实验区标本.采用组织培养和ELISA技术测定创面组织释放EGF、FGF-2和PDGF-AB的水平,并对创面组织中新生肉芽形成进行形态学观察和半定量分析.结果伤后24h内削痂手术后,创面组织局部释放EGF、FGF-2和PDGF-AB的水平较手术前和未手术创面有显著升高(P＜0.05);创面局部组织形态学观察显示,手术后创面新鲜肉芽组织形成较手术前和未手术创面显著(P＜0.05).结论伤后24h内削痂手术可以促进局部组织释放EGF、FGF-2和PDGF-AB,促进新生肉芽形成,有利于深Ⅱ度烧伤创面愈合,从而提示了伤后24h内削痂优于常规手术.     

烧伤后24 h内削痂防治深Ⅱ度创面进行性加深的组织学观察

目的　探讨烧伤后 2 4h内行削痂手术 ,对深Ⅱ度烧伤创面进行性加深的防治作用。方法　选择 12例深Ⅱ度烧伤患者 ,在伤后 2 4h内进行创面削痂手术。分别从手术前、手术后 (伤后 5～7d)和未手术创面 (伤后 5～ 7d)获取标本。采用HE染色、Masson′s染色和免疫组化技术标记Vi mentin抗原阳性细胞的方法 ,对创面组织标本进行组织学观察。　结果　随病程演进 ,未手术创面炎性反应程度明显加重 ,组织坏死范围扩大 ,原来残存的皮肤附件因炎症加重而消失 ;Masson′s染色棕红色范围扩大 ,亮绿色范围缩小 ;Vimentin抗原阳性细胞数量明显减少。伤后 2 4h内削痂创面局部炎症反应较未削痂创面明显减轻 ,可见新鲜肉芽形成和部分上皮修复 ,组织坏死范围未见进一步扩大 ,与未手术区比较差异有显著性意义 (P <0 .0 5 ) ;Masson′s染色亮绿色范围无明显缩小 ;Vimentin抗原阳性细胞数量明显多于未手术区 (P <0 .0 5 )。　结论　烧伤后 2 4h内削痂 ,能适时去除创面坏死组织、阻断组织变质性损害的加剧 ,从而有效改善深Ⅱ度创面的进行性加深现象 ,对创面愈合具有促进作用。     

削痂时机对深Ⅱ度烧伤局部IL-8释放及创面炎性反应的影响分析

目的:探讨削痂时机对深Ⅱ度烧伤局部IL-8释放及创面炎性反应的影响。方法:选取笔者医院2015年10月-2017年10月收治的深Ⅱ度烧伤患者92例,根据患者的清创时间将其分成A组(n=48)与B组(n=44)。两组患者均行削痂清创术,其中A组在伤后24h内清创,B组在烧伤24h后清创。比较两组围术期指标,包括手术时间、术中出血量、创面愈合时间、细菌定植量、住院时间。分别在手术前后不同时段取烧伤局部的创面分泌物,检测两组白介素-8(IL-8)的释放量,并测定创面白介素-1(IL-1)、白介素6(IL-6)、白介素-10(IL-10)、肿瘤坏死因子-α(TNF-α)水平,用于观察创面炎症反应的变化,并分析两组手术并发症发生率。结果:A组创面愈合时间、住院时间少于B组,且术后1周的细菌定植量低于B组,差异有统计学意义(P0.05)。两组术后3d、术后1周的创面IL-8释放量较术前、术后1d显著下降,且A组低于B组,差异有统计学意义(P0.05)。两组术后1周创面IL-1、IL-6、TNF-α水平低于术前,IL-10水平高于术前,且A组创面IL-6、TNF-α水平低于B组,IL-10水平高于B组,差异有统计学意义(P0.05)。A组并发症发生率为4.17%,B组为9.09%,组间比较差异无统计学意义(P0.05)。结论:削痂能下调深Ⅱ度烧伤患者局部IL-8释放量,并减轻创面炎症反应,与烧伤24h后清创相比,在伤后24h内行削痂清创术的效果更好。     

四肢环状混合型Ⅱ度烧伤早期削痂治疗

目的:克服四肢环状混合型Ⅱ度烧伤保守治疗存在的弊端,促使深Ⅱ度早期愈合,减轻疤痕增生。方法:25例早期削痂,浅Ⅱ度创面和较浅的深Ⅱ度创面术后用凡士林覆盖,功能部位愈合能力差的深Ⅱ度创面在同期植皮。结果:浅Ⅱ度创面削痂后愈合时间未受影响,深Ⅱ度创面整体愈合时间较保守方法提前,术区无感染现象,后期疤痕形成较轻,肢体功能恢复良好。结论:四肢环状混合型Ⅱ度烧伤,开展早期削痂手术,可以避免创面感染,有利于创面愈合。     

深Ⅱ度烧伤创面伤后24小时内削痂的安全性和促进愈合的临床观察

目的探讨深Ⅱ度烧伤创面伤后24h内削痂的安全性和临床疗效.方法12例有削痂手术指征并在伤后24h内实施削痂术的深Ⅱ度烧伤患者为实验组,并选14例条件相似并按常规在伤后4～6d行削痂术的深Ⅱ度烧伤患者作为对照组.结果两组病人在休克期补液量、休克期休克征象发生上无显著差别,而实验组创面愈合天数为(19.08±5.31)d,较对照组(29.36±7.03)d明显减少(P＜0.01),同时实验组的休克期尿量明显增多,回吸收期的体温、心率较对照组明显改善.结论深Ⅱ度烧伤创面伤后24h内削痂是安全的,并能缩短创面平均愈合天数.     

削痂植皮手术结合康复路径措施对深Ⅱ度烧伤患者美容效果及并发症的影响

目的:探究削痂植皮手术结合康复路径措施对深Ⅱ度烧伤患者美容效果及并发症的影响,为患者治疗及康复提供临床指导。方法:选取2015年5月-2018年6月笔者医院深Ⅱ度烧伤患者146例为研究对象。按照随机数表法,分为对照组和研究组,每组73例。其中对照组采用削痂植皮手术结合常规护理进行治疗,研究组采用削痂植皮手术结合康复路径措施进行治疗。治疗6个月后,比较两组患者美容效果、治疗前与治疗5d后血清肿瘤坏死因子(TNF-α)、白细胞介素-8(IL-8)与白细胞介素-10(IL-10)水平、并发症发生情况及治疗满意度。结果:研究组美容优良率(95.89%)明显高于对照组(79.45%),差异有统计学意义(P0.05);治疗前,两组TNF-α、IL-8及IL-10水平比较,差异无统计学意义(P0.05);治疗后,研究组TNF-α、IL-8水平明显低于对照组,IL-10水平明显高于对照组,差异有统计学意义(P0.05);研究组并发症发生率(6.85%)显著低于对照组(27.40%);满意度(93.15%)显著高于对照组(76.71%),差异均具有统计学意义(P0.05)。结论:削痂植皮手术结合康复路径措施对深Ⅱ度烧伤患者进行治疗,能够提升美容效果,有效降低创面炎症反应及并发症发生率,值得临床推广。     

早期薄层削痂联合负压封闭引流技术修复深Ⅱ度烧伤创面临床观察

深Ⅱ度烧伤创面坏死组织的存在是导致创面进行性加深及体内一系列病理生理性改变的根源,应用手术方法早期去除坏死组织并有效覆盖创面,是救治深Ⅱ度烧伤的主要手段[1].2008年7月-2010年6月,笔者单位应用早期薄层削痂联合VSD技术治疗深Ⅱ度烧伤创面,效果令人满意,现报告如下.     

Clinical characteristics and treatment of burn wound sepsis in extensive burn patients: successful experience with eight cases

Eight burn wound sepsis patients, in which 6 cases were diagnosed as MODS and two as septic shock, were treated consecutively in our hospital from September 1997 to October 1998. The plasma concentration of IL-6, IL-8, TNFα and LPS were assayed before and after surgical intervention, as well as when the patients' vital signs became stable. The results showed: ①The patients' conditions abruptly deteriorated when the burn wound sepsis emerged;②The major cause related to burn wound sepsis was extensive burn injuries, with large areas of deep burn remaining open; ③Although wound swabs taken on admission revealed the presence of colonization by many pathogenic bacteria, Pseudomonas aeruginosa was one of the most frequent bacteria isolated from the subeschar tissue; ④The plasma concentrations of IL-6, IL-8, TNF and LPS before surgical intervention were significantly higher than that after surgical intervention (P＜0.05) ;⑤The lowest level of the inflammatory mediators was observed when the patients' conditions became stable, as compared with before surgical intervention (P＜0. 001).These findings suggest that the clinical characteristics of burn wound sepsis are abrupt deterioration of the general condition and prominent septic symptoms, often complicated by MODS. The main cause of burn wound sepsis is the presence of a large area of open deep burn wounds, which should be excised and covered early. LPS and pro-inflammatory mediators play an important role in the pathogenesis of burn wound sepsis. Although success in treating these patients is the result of appropriate application of multiple treatments, early, aggressive and thorough surgical excision of invasive burn infectious tissue and closure of wound play a crucial role in the successful treatment of patients complicated by burn wound sepsis. Other treatments are adjuvant but also important.     

The effect of extensive excision of burn wound with invasive infection on hypermetabolism in burn patients with sepsis

Objective: To evaluate the effect of extensive excision of invasive burn wound infection on hypermetabolic response in burn patients with sepsis. Methods:Eight patients with major burn, complicated by invasive burn wound infection and sepsis were consecutively admitted to our hospital from September 1997 to October 1998. REEs were monitored by means of Cardiorespiratory Diagnostic System (Medical Graphics Corporation, USA) at patients bedside. Plasma concentration of IL-6、IL-8、TNF-α and LPS were assayed before and after surgical intervention and at the time when the patients' vital signs became stable. Correlation analysis between REEs and IL-6、IL-8、TNF-α、LPS was respectively made. Results: A total of 8 patients were treated and all of them survived. Values of REE before surgical intervention were significantly higher than those after surgical intervention(P＜0.01), and when patients vital signs became stable the values were significantly lower compared with that after surgical intervention(P＜0.01). The plasma concentrations of IL-6、 IL-8、TNF-α and LPS after excision of invasive burn wound infection were significantly lower than those before surgical intervention (P＜0.05). The lowest levels of these inflammatory mediators were observed when the conditions of patients became stable, and the values were significantly lower compared with those before surgical intervention (P＜0. 001). There was a significant positive correlation between REE level and respective values of plasma IL-6、 IL-8、 TNF-α、 LPS(P ＜0.01). Conclusions: It is deemed that the extensive excision of invasively infected burn wound in patients with major burn should be performed as early as possible to reduce an increased release of inflammatory mediators, and to control the hypermetabolic response during sepsis.     

Rapamycin reduces burn wound progression by enhancing autophagy in deep second‐degree burn in rats

Burn wound progression is caused by many mechanisms including local tissue hypoperfusion, prolonged inflammation, free radical damage, apoptosis, and necrosis in burn wounds. Autophagy, a homeostatic process by which cells break down their own components, was found to protect against ischemic injury, inflammatory diseases, and apoptosis in some cases. We tested whether rapamycin, an autophagy inducer, could ameliorate burn wound progression and promote wound healing through autophagy enhancement. Using a previously described deep second‐degree burn model, we first tested the effects of rapamycin on autophagic response in burn wound tissue. Autophagy levels in wound tissue of treated rats were increased as compared with controls. Furthermore, we found that laser Doppler flowmetry values and Na/K‐ATPase activities were markedly higher in the treated wounds. The content of interleukin‐8, methane dicarboxylic aldehyde, and myeloperoxidase activity in the wounds of treated rats were much lower than in controls. The apoptotic rates in treated wounds were much lower than controls as determined by terminal deoxynucleotidyl transferase mediated nick end labeling assay. Finally, histomorphological analysis showed that burn wound progression in the treatment group was ameliorated. The time to wound reepithelialization was shorter in the treated wounds than controls 22.5 ± 1.4 days vs. 24.8 ± 1.3 days (mean ± standard deviation, p < 0.01).     

大面积侵袭感染组织切除对烧伤创面脓毒症患者静息能量消耗的 …

OBJECTIVE: To evaluate the effect of extensive excision of invasive burn wound infection on hypermetabolic response in burn patients with sepsis. METHODS: Eight patients with major burn, complicated by invasive burn wound infection and sepsis, were consecutively admitted to our hospital from September 1997 to October 1998. Resting energy expenditures (REEs) were monitored by means of cardiorespiratory diagnostic system (Medical Graphics Corporation, USA) at patients' bedside. Plasma concentration of IL-6, IL-8, TNF-alpha, and LPS were assayed before and after surgical intervention and at the time when the patients' vital signs became stable. Correlation analysis between REEs and IL-6, IL-8, TNF-alpha, and LPS were made, respectively. RESULTS: A total of 8 treated patients survived. Values of REE before surgical intervention were significantly higher than those after surgical intervention (P < 0.01), and when patients' vital signs became stable the values were significantly lower than those after surgical intervention (P < 0.01). The plasma concentrations of IL-6, IL-8, TNF-alpha, and LPS after excision of invasive burn wound infection were significantly lower than those before surgical intervention (P < 0.05). The lowest levels of these inflammatory mediators were observed when the conditions of patients became stable, and the values were significantly lower than those before surgical intervention (P < 0.001). There was a significant positive correlation between REE level and respective values of plasma IL-6, IL-8, TNF-alpha, and LPS (P < 0.01). CONCLUSIONS: It seemed that the extensive excision of invasively infected burn wound in patients with major burn should be performed as early as possible to reduce an increased release of inflammatory mediators and to control the hypermetabolic response during sepsis.     

A hypothesis of the healing of deep dermal burns and the significance for treatment

Deep dermal burns heal by a combination of new connective tissue formation (granulation) and epithelialization. In deep dermal wounds, which are unhealed after 14 days of conservative treatment, epithelialization can be enhanced by abrasion either alone or combined with provision of a skin graft. Some 42 burn wounds in 25 patients treated by this method have healed quickly and with good results. This method represents a move away from the current trend of early tangential excision and grafting of burn wounds and raises the possibility of developing a regime with the advantages but not the disadvantages of early tangential excision and grafting.     

Efficacy of hydrosurgical excision combined with skin grafting in the treatment of deep partial-thickness and full-thickness burns: A two-year retrospective study

IntroductionDeep partial-thickness and full-thickness burn wounds often undergo tangential excision or escharectomy to expose healthy tissue, combined with skin grafting to promote wound healing. However, conventional tangential excision with the humby knife leads to inevitable damage to the dermis while excising burn tissue due to the lack of precision. Indeed, the preservation of dermal tissue is a key factor in determining wound healing and scar quality. The precision and tissue selectivity of the Versajet Hydrosurgical System has been established for excising burn tissue while preserving dermal tissue. In this study, we retrospectively compared the efficacy of "Hydrosurgical excision combined with skin grafting" and "Conventional tangential excision combined with skin grafting" in treating deep partial-thickness and full-thickness burn wounds to demonstrate that hydrosurgery improved the treatment of deep partial-thickness and full-thickness burns.MethodsA total of 86 patients with deep partial-thickness and/or full-thickness burns with a total burn surface area (TBSA) ≤ 25% from July 2018 to July 2020 were included in this study and were divided into experimental (hydrosurgical excision combined with skin grafting, n = 43) and control (conventional tangential excision combined with skin grafting, n = 43) groups. Parameters were analyzed, including the intraoperative blood loss volume per unit area of grafted skin, surgery duration, wound healing time, skin graft survival, and the treatment costs per unit of burned area. Scar assessment was performed at 1 year with the modified Vancouver Scar Scale linked with TBSA (mVSS-TBSA).ResultNo significant difference was found in male to female ratio, age, weight, TBSA, burn depth, skin grafting area (SKA), skin grafting methods, cases treated with carbon dioxide fractional laser or incidence of inhalation injury, and the incidence of hypovolemic shock between two groups(p > 0.05). Compared with the control group, patients treated with hydrosurgical excision combined with skin grafting experienced less intraoperative blood loss volume per unit area of grafted skin (p < 0.05). The mVSS-TBSA of patients that underwent hydrosurgical excision combined with skin grafting was significantly improved in comparison to the control group (p < 0.01). No significant difference was found in surgery duration, wound healing time, skin graft survival and treatment costs per unit of burned area between the two groups (p > 0.05).ConclusionHydrosurgical excision combined with skin grafting reduced intraoperative blood loss volume per unit area of grafted skin, improved scarring 1-year after injury, and did not increase the treatment costs per unit of burned area. This technique provides a novel alternative for managing deep partial-thickness and full-thickness burn wounds.