血管成形术及支架植入术PPT课件

through incompetent venous
valves
Loss of vessel wall integrity Aneurysm, dissection, bleeding
These can occur alone or in any combination.
第一节 血管成形术基本概念
▪ Fibromuscular Dysplasia ▪ Vasculitis(Takayasu's arteritis) ▪ Other factors
Takayasu's arteritis
irregular beaded appearance (arrow) and location of the abnormality in the distal main renal artery
▪ Atherosclerosis is an arterial disease that is prevalent in industrialized nations.
▪ Veins do not develop atherosclerotic lesions unless they are exposed to arterial pressures and flow over extended periods of time.
Angiographic appearance of bulky, eccentric plaque in the SFA
第一节 血管成形术基本概念
Biblioteka Baidu
Hypertrophied collateral arteries around a short chronic occlusion of the distal superficial femoral artery (SFA)
▪ The risk factors for atherosclerosis include environmental and genetic factors.
▪ There are multiple theories of causation, including intimal trauma, an autoimmune response,and infection. Whatever the underlying pathogenesis, the key point to remember is that atherosclerosis is a systemic disease, affecting arteries in all vascular beds.
Cause
Examples
Injury
Surgical anastomosis, clamps,
angioplasty
denudation of intima by any device
Foreign body Stents, suture material, catheters
Abnormal flow Arterialization of veins, turbulence
第一节 血管成形术基本概念
Risk Factor for Atherosclerosis
▪ Genetic predisposition
▪ Smoking
▪ Diet
▪ Diabetes
▪ Chronic renal failure
▪ Hypertension
▪ Homocysteinuria
▪ Advanced age
DSA arch aortogram showing occlusion of the left CCA (arrow) at the origin, long stenosis of the right CCA (arrowhead), and stenosis of the right subclavian artery origin
血管成形术
第一节 血管成形术基本概念
一、PTA的定义 二、PTA的发展简史 三、PTA的治疗机制 四、PTA的适应症和禁忌症 五、PTA的并发症及其预防 六、PTA后再狭窄的机制 七、支架成形术
第一节 血管成形术基本概念
Clinical Manifestayions of Vascular Pathology
Manifestation
Example
Obstruction to flow forward Arterial and venous stenoses
Increased flow forward
Arteriovenous fistula,
malformation
Increased flow backward Varicose veins due to reflux
第一节 血管成形术基本概念
一、PTA的定义
▪ Hyperlipidemia
▪ Obesity
▪ Elevated lipoprotein (a)
Atheromatous plaque. Eccentric
atheroma
第一节 血管成形术基本概念
第一节 血管成形术基本概念
Angiographic appearance of concentric stenosis of the left common iliac artery
. DSA showing an abrupt cutoff of flow with a filling defect (arrow) consistent with thrombus. There is a paucity of collateral vessels and lack of reconstitution of distal vessels.
第一节 血管成形术基本概念
▪ Intimal hyperplasia is not a true disease or disorder,but a biologic response to injury to the vessel wall.
▪ Causes of Intimal Hyperplasia