潰瘍?cè)趺葱纬傻臐兊闹委煼椒?/title> <meta name="keywords" content="" /> <meta name="description" content="潰瘍是皮膚或黏膜表面組織的限局性缺損、潰爛，其表面常覆蓋有膿液、壞死組織或痂皮，愈后遺有瘢痕，是什么因素導(dǎo)致潰瘍的形成呢?以下是由學(xué)習(xí)啦小編整理關(guān)于潰瘍的形成原因的內(nèi)容，希望大家喜歡! 潰瘍的形成原因主要指發(fā)生于胃和十二"/> <link rel="canonical" href="http://wyyxscd8644.com/"/> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <link href="/public/css/article.css" rel="stylesheet" type="text/css" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head> <body> <h1><a href="http://wyyxscd8644.com/">18禁网站免费,成年人黄色视频网站,熟妇高潮一区二区在线播放,国产精品高潮呻吟AV</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><s id="phoem"></s><ruby id="phoem"></ruby><cite id="phoem"></cite><source id="phoem"></source><code id="phoem"></code><wbr id="phoem"></wbr><video 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<h1>潰瘍?cè)趺葱纬傻臐兊闹委煼椒?/h1> <div id="8hh5rq1ip" class="ar_title_b"> <div id="8hh5rq1ip" class="sub_title clear"> <span id="8hh5rq1ip" class="sp2 c6 fl">時(shí)間：<time class="fxtime">2016-12-02 13:48:54</time></span> <span id="8hh5rq1ip" class="sp1 c6 fl"><em id="zuozhe" class="noshow">謝君</em><em class="user_id noshow">787</em>由 <em class="nickname"></em> 分享</span> <span id="8hh5rq1ip" class="fl arc_btn"></span> </div> </div> </div> <div id="8hh5rq1ip" class="y_ju"></div> <div id="8hh5rq1ip" class="con_article con_main" id="contentText"> <p>潰瘍?cè)趺葱纬傻臐兊闹委煼椒?/p><p> 　　潰瘍是皮膚或黏膜表面組織的限局性缺損、潰爛，其表面常覆蓋有膿液、壞死組織或痂皮，愈后遺有瘢痕，是什么因素導(dǎo)致潰瘍的形成呢?以下是由學(xué)習(xí)啦小編整理關(guān)于潰瘍的形成原因的內(nèi)容，希望大家喜歡!</p><h2> 　　潰瘍的形成原因</h2><p> 　　主要指發(fā)生于胃和十二指腸的慢性潰瘍，是一多發(fā)病、常見(jiàn)病。潰瘍的形成有各種因素，其中酸性胃液對(duì)粘膜的消化作用是潰瘍形成的基本因素，因此得名。酸性胃液接觸的任何部位，如食管下段、胃腸吻合術(shù)后吻合口、空腸以及具有異位胃粘膜的Meckel憩室。絕大多數(shù)的潰瘍發(fā)生于十二指腸和胃，故又稱(chēng)胃、十二指腸潰瘍。本病確診后一般采取綜合性治療措施，包括內(nèi)科基本治療、藥物治療、并發(fā)癥的治療和外科治療。治療消化性潰瘍的目的在于：①緩解臨床癥狀;②促進(jìn)潰瘍愈合;③防止?jié)儚?fù)發(fā);④減少并發(fā)癥。但現(xiàn)有的各種療法尚不能改變消化性潰瘍的自然病程和徹底根治潰瘍。</p><p> 　　潰瘍一般是由外傷、微生物感染、腫瘤、循環(huán)障礙和神經(jīng)功能障礙、免疫功能異?；蛳忍炱つw缺損等引起的局限性皮膚組織缺損。外傷性潰瘍往往是由物理和化學(xué)因素直接作用于組織引起。微生物感染性疾病多由細(xì)菌、真菌、螺旋體、病毒等引起組織破壞。結(jié)節(jié)或腫瘤破潰。免疫異常引起的血管炎性潰瘍系因動(dòng)脈或小動(dòng)脈炎使組織發(fā)生壞死而形成。循環(huán)或神經(jīng)功能障礙屬營(yíng)養(yǎng)障礙引起組織壞死，如靜脈曲張、麻風(fēng)潰瘍等。</p><p> 　　(一)細(xì)菌性疾病</p><p> 　　貌癤腫、癰、蜂窩織炎、汗腺炎、皮膚結(jié)核、賺瘡、皮膚炭疽、鼻疽、皮膚白喉、壞死性痤瘡、下瘠型膿皮病、麻風(fēng)、熱帶潰瘍、分枝桿菌性潰瘍、游泳池肉芽腫、口腔結(jié)核性潰瘍。</p><p> 　　(二)真菌性疾病</p><p> 　　抱子絲菌病、皮膚隱球菌病、組織胞漿菌病、球抱子菌病、曲菌病、足菌腫、放線菌病、奴卡菌病、黃癬、膿癬、皮膚毛霉菌病。</p><p> 　　(三)病毒性疾病</p><p> 　　手足口病、口蹄疫。</p><p> 　　(四)寄生蟲(chóng)病</p><p> 　　皮膚阿米巴病、皮膚蠅蛆病。</p><p> 　　(五)性傳播疾病</p><p> 　　生殖器瘡疹、梅毒、軟下瘡膚股溝肉芽腫、性病性淋巴肉芽腫病。</p><p> 　　(六)變應(yīng)性皮膚病</p><p> 　　固定性藥疹。</p><p> 　　(七)血管炎及血管性疾病</p><p> 　　結(jié)節(jié)性多動(dòng)脈炎、變應(yīng)性血管炎、血栓閉塞性脈管炎、丘疹壞死性結(jié)核疹、硬紅斑、壞疽性</p><p> 　　膿皮病、致死性中線肉芽腫、wegener肉芽腫、閉塞性動(dòng)脈硬化癥、淤滯性皮炎、雷諾癥。</p><p> 　　(八)物理性疾病</p><p> 　　射線皮炎、凍瘡、褥瘡。</p><p> 　　(九)職業(yè)性皮膚病</p><p> 　　鉻、鎳、鈉、鋅、鈷、鹽酸、硫酸、氫氟酸、氫氧化鈉、碳酸鈉均可引起皮膚潰瘍。</p><p> 　　(十)自身免疫疾病</p><p> 　　白塞病。</p><p> 　　(十一)腫瘤</p><p> 　　濕疹樣癌萬(wàn)房外濕疹樣癌、基底細(xì)胞癌。鱗癌、惡性黑色素瘤、皮脂腺癌、章樣肉芽腫、惡性組織細(xì)胞增生癥上kaposi肉瘤、毛鞘癌、纖維肉瘤、增殖性紅斑、疣狀癌、多發(fā)性漿細(xì)胞瘤。</p><p> 　　(十二)其他</p><p> 　　連續(xù)性肢端皮炎、結(jié)節(jié)性脂肪壞死、脂肪肉芽腫、足穿通性潰瘍、阿弗他口腔炎、壞疽性龜頭炎、急性女陰潰瘍。</p><h2> 　　潰瘍的癥狀體征</h2><p> 　　本病的臨床表現(xiàn)不一，部分患者可無(wú)癥狀，或以出血、穿孔等并發(fā)癥作為首發(fā)癥狀。多數(shù)消化性潰瘍有以下一些特點(diǎn)：</p><p> 　　①慢性過(guò)程呈反復(fù)發(fā)作，病史可達(dá)幾年甚或十幾年。</p><p> 　?、诎l(fā)作呈周期性，與緩解期互相交替。期長(zhǎng)短不一，短的只是幾周或幾月，長(zhǎng)的可幾年。發(fā)作有季節(jié)性，多在秋冬和冬春之交發(fā)作，可因精神情緒不良或服NSAID誘發(fā)。</p><p> 　?、郯l(fā)作時(shí)上腹痛呈節(jié)律性。</p><p> 　　一、癥狀上腹痛為主要癥狀，可為鈍痛、灼痛、脹痛或劇痛，但也可僅有饑餓樣不適感。典型者有輕度或中度劍突下持續(xù)疼痛，可被抗酸藥或進(jìn)食所緩解。大約有2/3的疼痛呈節(jié)律性：早餐后1-3小時(shí)開(kāi)始出現(xiàn)上腹痛，如不服藥或進(jìn)食則要堅(jiān)持至午餐才緩解。食后2-4小時(shí)又痛，也需進(jìn)食來(lái)緩解，約半數(shù)有午夜痛，患者常痛醒。GU也可發(fā)生規(guī)律性疼痛，但餐后出現(xiàn)較早，約在餐后1/2-1小時(shí)出現(xiàn)，至下次餐前自行消失。午夜痛也可發(fā)生，但不如DU多見(jiàn)。部分病例無(wú)上述典型疼痛，而僅表現(xiàn)為無(wú)規(guī)律性的較含糊的上腹隱痛不適，伴脹滿、厭食、噯氣、反酸等癥狀，多見(jiàn)于GU病例。隨著病情發(fā)展，可因發(fā)病癥的出現(xiàn)而發(fā)生癥狀改變。潰瘍痛是一種內(nèi)臟痛，具有上腹痛而部位不很確定的特點(diǎn)。如果疼痛加劇而部位固定，放射至背部，不能被抗酸藥緩解，常提示有后壁慢性穿孔;突然發(fā)生上腹劇烈迅速延及全腹時(shí)應(yīng)考慮有急性穿孔;有突發(fā)眩暈者說(shuō)明可能并發(fā)出血。</p><p> 　　二、體征潰瘍活動(dòng)時(shí)劍突下可有一固定而局限的壓痛點(diǎn)，緩解時(shí)無(wú)明顯體征。 </div> <div id="8hh5rq1ip" class="y_ju"></div> <div id="8hh5rq1ip" class="pnum"> <ul id="page_slice"> <li><a>共2頁(yè): </a></li><li><a href='#'>上一頁(yè)</a></li><li id="8hh5rq1ip" class="thisclass"><a href='#'>1</a></li><li><a href='2003818_2.html'>2</a></li><li><a href='2003818_2.html'>下一頁(yè)</a></li> <div id="8hh5rq1ip" class="clear"></div> </ul> </div> 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