Helena Heizmann

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OBJECTIVES The purpose of this study was to analyze long-term follow-up information over several years from consecutive, unselected patients treated with direct percutaneous transluminal coronary angioplasty (PTCA) for acute myocardial infarction (MI). BACKGROUND Direct PTCA is often used in patients with acute MI. Short-term results are favorable.(More)
While communities of practice are often situated within culturally complex organisations, it is still relatively unclear what kinds of challenges arise, when knowledge is shared at cross-cultural interfaces. This paper explores the topic of knowledge sharing through communities of practice with a specific focus on the intersections between multiple(More)
Despite theoretical advantages of Directional Coronary Atherectomy (DCA) vs. PTCA, the first two controlled studies comparing both methods, the Coronary Angioplasty Versus Excisional Atherectomy Trial (CAVEAT), and the Canadian Coronary Atherectomy Trial (CCAT), showed no clinical benefit of DCA, A second generation of trials, the Optimal Atherectomy(More)
Trotz theoretischer Vorteile gegenüber der Ballondilatation zeigte sich im Langzeitverlauf nach direktionaler koronarer Atherektomie (DCA) bei der CAVEAT-(Coronary Angioplasty Versus Excisional Atherectomy Trial) und der CCAT-Studie (Canadian Coronary Atherectomy Trial) keine Reduktion der angiographischen Restenoserate. Eine zweite Generation(More)
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