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  • Title: [Surgical indications and results of myocardial revascularization in complications of PTCA].
    Author: Danzi GB, Campolo L.
    Journal: G Ital Cardiol; 1992 Mar; 22(3):349-54. PubMed ID: 1426776.
    Abstract:
    Acute coronary occlusion during PTCA represents a significant procedural complication occurring in approximately 4-5% of cases, most frequently because of coronary dissection, spasm, or thrombosis. In these cases the first step in the management of acute ischemia is 1) a brief evaluation of its hemodynamic consequences and 2) the assessment and treatment of its cause. Spasm and intracoronary thrombus formation are usually readily identifiable and treatable using intracoronary nitroglycerin and thrombolytic therapy. In our catheterization laboratory the current approach to occlusive coronary dissection is represented by the use of autoperfusion dilatation catheters and by stent application. The atherectomy devices and the laser "welding" of the dissected intimal segment represent other alternatives that are still under clinical evaluation in this particular setting. If coronary occlusion is refractory to these efforts and coronary blood flow is not reestablished rapidly, emergency coronary bypass surgery is required to salvage jeopardized myocardium. In this case myocardial ischemia may be lessened by the insertion of an intra-aortic balloon pump. In our experience, the incidence of death (4%) and myocardial infarction (37%) for emergency CABG after a failed angioplasty, is similar to that reported by other Authors. The duration of myocardial ischemia and the presence of cardiogenic shock before operation are the most important determinants of major complications such as death and acute myocardial infarction.
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