By C. T. Dotter, A. Grüntzig, W. Schoop, E. Zeitler (auth.), Professor Dr. Eberhard Zeitler, Privatdozent Dr. Andreas Grüntzig, Professor Dr. Werner Schoop (eds.)

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Compressed intima with definite endothelial lining. HZ 8446/3/77. F. 40/17. 300x Fig. 12. (a) Before treatment: posterior tibial artery with slight arteriosclerotic wall changes (+ - - - - +). (b) Occlusion of the same segment by embolic material after transluminal dilatation higher up in the femoral artery (not visible in this X-ray). (c) 3 years later the occluded segment has become patent again without any therapy (+ - - - - - +) a • Fig. 13. (a) Severe arteriosclerosis in a 74-year-old woman.

Sa. Fogarty catheter in the Hettler cannula b c Fig. Sb. External iliac artery stenoses (pressure gradient 65 mm Hg) Fig. Sc. Control angiography after dilatation with Fogarty catheter through Hettler cannula; small subintimal dissection (pressure gradient 20 mm Hg) Dilatation Technique of Iliac Artery Stenoses With Balloon Catheters 29 a dilatation of the balloon, thereby exerting pressure on the easily compressible thrombotic vascular wall deposits. This compression or dilatation can be done several times without changing the site, as well as subsequently at several locations in the iliac artery.

It was partly successful, but was followed by thrombotic reocclusion. The figure illustrates the pronounced intimal proliferation with ossification. Such alterations are not suited for the Dotter procedure. AZ 587/75. F. 36/12. 30x (b) In this same case, the intimal beds have been sheared away in some areas by longitudinal forces produced by the catheter. The patient died due to coronary infarction 2 weeks after recanalization. AZ 587/75. F. 36/ 14. 30x b 50 Histologic Experiences insudations in the depth of the intima along the internal elastic lamella.

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