封閉負(fù)壓引流技術(shù)在海水浸泡爆炸傷創(chuàng)面治療中的應(yīng)用研究(一)
發(fā)布時(shí)間:2018-04-26 10:08
本文選題:封閉負(fù)壓引流 + 海水浸泡; 參考:《大連醫(yī)科大學(xué)》2013年碩士論文
【摘要】:背景:封閉負(fù)壓引流技術(shù)(Vacuum sealing drainage VSD)經(jīng)大量的臨床實(shí)踐證明對(duì)各類(lèi)創(chuàng)面的治療效果顯著,但在海水浸泡爆炸傷創(chuàng)面領(lǐng)域的應(yīng)用目前尚未有報(bào)道,有關(guān)此類(lèi)創(chuàng)面治療負(fù)壓值的選擇還需明確。 目的:通過(guò)對(duì)比觀察不同負(fù)壓下VSD在海水浸泡爆炸傷創(chuàng)面治療過(guò)程中血管內(nèi)皮生長(zhǎng)因子(VEGF)、miRNA-17-5p的表達(dá),摸索其在VSD治療中的最適負(fù)壓范圍,部分闡明VSD促進(jìn)海水浸泡爆炸傷創(chuàng)面愈合的機(jī)制。 方法:采用體重25kg-30kg大小的實(shí)驗(yàn)用小型豬(中國(guó)I號(hào))建立爆炸傷模型,在距脊柱中線約10cm處的雙側(cè)臀部及肩胛部皮膚做長(zhǎng)約2cm全層切口,緊貼皮下鈍性分離出直徑約2cm的腔隙,置入雷管,外罩聚能器,引爆雷管,形成爆炸創(chuàng)面。迅速清創(chuàng),去除創(chuàng)面異物及明顯壞死組織,創(chuàng)面置于10℃海水(取渤海彎近海天然海域海水)中浸泡60分鐘,快速?gòu)?fù)溫。海水浸泡爆炸傷創(chuàng)面隨機(jī)分為4組,治療組3組分別給與120mmHg、180mmHg、240mmHg負(fù)壓吸引,對(duì)照組行常規(guī)換藥治療。海水浸泡爆炸傷后0、1、3、5、7、9、16、23、30、58天分別切取創(chuàng)緣組織、創(chuàng)面肉芽組織應(yīng)用組織學(xué)、免疫組化及分子生物學(xué)技術(shù),對(duì)比觀察創(chuàng)面愈合及VEGF、miRNA-17-5P的表達(dá)情況。 結(jié)果:1、海水浸泡爆炸傷創(chuàng)面污濁,出血少,基底及創(chuàng)緣蒼白,壞死組織界限不清,繼發(fā)性壞死出現(xiàn)時(shí)間早、持續(xù)時(shí)間長(zhǎng),感染較重;2、VSD治療組創(chuàng)面愈合效果明顯優(yōu)于對(duì)照組,120mmHg負(fù)壓治療下創(chuàng)面炎癥反應(yīng)較輕,未出現(xiàn)繼發(fā)性壞死,肉芽組織增生明顯,上皮爬行及創(chuàng)面愈合速度較快;3、海水浸泡爆炸傷創(chuàng)緣組織中VEGF表達(dá)于胞漿內(nèi),,早期VSD治療組表達(dá)高于對(duì)照組。尤其以120mmHg負(fù)壓治療組顯著,術(shù)后58天創(chuàng)面愈合,VEGF表達(dá)接近于正常皮膚組織的表達(dá);4、miR-17-5p可在海水浸泡爆炸傷創(chuàng)面肉芽組織中表達(dá),VSD治療組表達(dá)顯著高于對(duì)照組。VSD治療組1天表達(dá)最高,180mmHg負(fù)壓治療組表達(dá)明顯高于其它治療組,隨時(shí)間推移表達(dá)呈逐漸下降趨勢(shì),且120mmHg負(fù)壓治療組表達(dá)持續(xù)高于其它組;而對(duì)照組的表達(dá)則是呈動(dòng)態(tài)變化。各時(shí)間點(diǎn)兩組間差異有顯著意義(均P0.05)。 結(jié)論:1、VSD能夠促進(jìn)海水浸泡爆炸傷創(chuàng)面愈合; 2、VSD可以促進(jìn)VEGF在海水浸泡爆炸傷創(chuàng)面愈合中的表達(dá),以 120mmHg負(fù)壓治療組表達(dá)顯著增高; 3、120mmHg負(fù)壓治療下miRNA-17-5P在海水浸泡爆炸傷創(chuàng)面肉芽組 織中表達(dá)持續(xù)高于其他治療組; 4、120mmHg的負(fù)壓可能是治療海水浸泡爆炸傷的最適負(fù)壓范圍。
[Abstract]:Background: the vacuum sealing drainage VSD has been proved to be effective in the treatment of various kinds of wounds by a large number of clinical practice, but its application in the field of seawater immersion and explosive wound has not been reported. The selection of negative pressure values for this type of wound needs to be determined. Objective: to investigate the expression of vascular endothelial growth factor (VEGF) VEGF miRNA-17-5p in the treatment of explosive wound with seawater immersion under different negative pressures, and to explore the optimal range of negative pressure in the treatment of VSD. The mechanism of VSD promoting wound healing after seawater immersion and explosion injury was explained. Methods: a model of explosive injury was established in miniature pig (China I) with the size of 25kg-30kg. The skin of both buttocks and scapula was cut by 2cm at the point about 10cm from the midline of spine, and the space of 2cm was obtuse separated from the skin of subcutaneously, and the space of 2cm was obtuse. The detonator is placed, the shell accumulator, detonates the detonator, forms the explosive wound. Rapid debridement, removal of wound foreign bodies and obvious necrotic tissue, and soaking of the wound in 10 鈩
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