tailieunhanh - Atlas of the Diabetic Foot - part 7

Endovascular ống đỡ động mạch đầu tiên được chấp thuận cho sử dụng trong các động mạch chậu là ống đỡ động mạch Palmaz, ống thép không gỉ duy nhất, được triển khai bởi sự mở rộng quả bóng. Wallstent, stent tự mở rộng linh hoạt có sẵn trong các kích cỡ đường kính khác nhau, cũng được sử dụng. | Gangrene 137 Figure Digital subtraction angiography of the foot shown in Figure . Severe stenosis following the bifurcation of celiac aorta can be seen significant residual stenosis after angioplasty. The first endovascular stent approved for use in the iliac arteries was the Palmaz stent a single stainless steel tube deployed by balloon expansion. The Wallstent a flexible self-expanding stent which is available in several different diameter sizes is also in use. New covered stents are being evaluated with the hope that they may mimic surgical grafts and resist re-stenosis. Keywords Stents peripheral vascular disease angioplasty digital subtraction angiography DIGITAL SUBTRACTION ANGIOGRAPHY A 54-year-old female suffering from type 2 diabetes and being treated with metformin 138 Atlas of the Diabetic Foot Figure Post-stent digital subtraction angiography of the foot shown in Figures and . Courtesy of C. Liapis and insulin was admitted to the vascular surgery ward she complained of worsening intermittent claudication in her right leg which had occurred over the previous 2 months. As her ankle brachial index was very low a digital subtraction angiography of the abdominal aorta and the arteries of the lower extremities was carried out. A catheter was inserted through her right brachial artery and the tip of the catheter was advanced into the abdominal aorta. Advanced stenotic lesions of the abdominal aorta were present with partial stenosis of the lumen. The iliac and common femoral arteries were patent. Severe stenoses in the superficial femoral arteries were present predominantly in the right vessel with a subtotal occlusion of the distal area of the artery Figures and extensive collateral vessel development was noted and both popliteal arteries were fairly patent. There was mild atheromatous disease in the tibial arteries. Digital subtraction angiography has replaced film screen angiography since it provides superior contrast .