Titlebook: Interventional Cardiology and Angiology; B. Höfling,A. Pölnitz,B. E. Strauer Conference proceedings 1989 Springer-Verlag Berlin Heidelberg

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Balloon aortic valvuloplasty in adults: report of 78 consecutive patients). To date more than 2 000 BAV procedures have been performed, mainly in France and the United States. Early studies suggest that marked immediate symptomatic and hemodynamic improvement can be achieved, while the restenosis rate seems to be relatively high in short term follow-up (7).

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Percutaneous transluminal atherectomy of the peripheral and coronary arteries eccentric lesions do not respond well to angioplasty and hard, fibrous or calcified lesions often fail to dilate. Atherectomy is one of several new techniques currently being developed to address these shortcomings.

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Myocardial release of lactate, hypoxanthine, and urate during and following percutaneous translumina 2). The need to detect any persisting metabolic or mechanical dysfunction becomes of even greater concern as the number of dilated vessels and the duration of balloon inflation tend to increase, thereby enhancing both the extent and the severity of ischemia. The risk exists that the damage induced by the intervention may exceed its benefit.