血管成形術(shù)及支架植入術(shù)-資料下載頁(yè)
2024-10-31 12:02本頁(yè)面
【正文】 s the plaque and vessel wall are literally pushed aside by the stent to enlarge the lumen,第四十三頁(yè)，共五十一頁(yè)。,Schematic of the mechanism of angioplasty. A, Concentric stenosis with a small residual lumen. B, An appropriately sized angioplasty balloon is inflated (arrows) in the lumen. C, Fracturing, fissuring, and subintimal dissection of the plaque greatly increase the crosssectional area of the lumen.,The primary mechanism of balloon angioplasty is controlled fracture of the obstructing plaque. This results in formation of fissures in the plaque itselt, and tearing of the edges of the plaque away from the adjacent normal intima. With proper oversizing of the balloon, the muscular media is stretched as well. Plaque is not remodeled, redistributed, or vaporized by the balloon.,第四十四頁(yè)，共五十一頁(yè)。,第二節(jié) 支架(zhīji224。)成形術(shù)根本概念,六、適應(yīng)癥 PTA術(shù)后并發(fā)癥或療效不佳者 狹窄性病變累及主動(dòng)脈壁或粥樣硬化明顯者 頸部(jǐnɡ b249。)及顱內(nèi)具有血流動(dòng)力學(xué)意義的狹窄 腔靜脈和較大靜脈分支的狹窄或閉塞 重建血管通道 支架移植物用于動(dòng)脈瘤及主動(dòng)脈夾層的治療 其他,第四十五頁(yè)，共五十一頁(yè)。,Indications for stent placement Arterial Recanalization of chronic occlusion Occlusive or flowlimiting dissection following angioplasty Elastic or recurrent stenosis Lesion suspected as source of distal emboli Inflow lesion prior to distal surgical bypass procedure Ostial lesion (especially renal artery) Thoracic aortic coarctation/pulmonary artery stenosis (pediatric) Venous Recanalization of chronic occlusion Extrinsic compression by malignancy Elastic, fibrotic, or recurrent stenosis Other Bridging mouth of aneurysm prior to coil placement Reinforce stentgraft,第四十六頁(yè)，共五十一頁(yè)。,第二節(jié) 支架(zhīji224。)成形術(shù)根本概念,七、禁忌癥 嚴(yán)重的心肺腎功能不全 大動(dòng)脈炎活動(dòng)期 肢體廣泛(guǎngf224。n)的動(dòng)脈病變 生長(zhǎng)發(fā)育未成熟者 其他,第四十七頁(yè)，共五十一頁(yè)。,第二節(jié) 支架(zhīji224。)成形術(shù)根本概念,八、并發(fā)癥與預(yù)防 支架移位或血管壁破裂 血管損傷(sǔnshāng)：血管壁穿通、動(dòng)脈破裂、 支架內(nèi)急性血栓形成或遠(yuǎn)端血管栓塞 支架感染 其他：spasm、分支血管阻塞,第四十八頁(yè)，共五十一頁(yè)。,complications Unique to Sent Placement,第四十九頁(yè)，共五十一頁(yè)。,第五十頁(yè)，共五十一頁(yè)。,內(nèi)容(n232。ir243。ng)總結(jié),血管成形術(shù)?！刂茡p傷性理論?？刂疲嚎刂魄蚰业闹睆?。腔靜脈和較大靜脈分支的狹窄(xi225。zhǎi)或閉塞。Prevention,第五十一頁(yè)，共五十一頁(yè)。,
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