TY - CHAP M1 - Book, Section TI - Embolization and No-Reflow During Percutaneous Coronary Intervention A1 - Feldman, Ted A1 - Sanborn, Timothy A. A1 - Tommaso, Carl L. A2 - Samady, Habib A2 - Fearon, William F. A2 - Yeung, Alan C. A2 - King III, Spencer B. PY - 2017 T2 - Interventional Cardiology, 2e AB - Embolization and coronary no-reflow are rare but important complications during percutaneous coronary intervention (PCI). Recognition and treatment are important in that they may reduce or prevent myocardial necrosis and serious subsequent complications. Additionally, nonclinical events may occur as a result of this phenomenon, and prevention where possible becomes important. Macroembolization usually is due to macro-particles and/or blood clots that may occur during intervention of patients with acute coronary syndromes. No-reflow may occur due to the embolization of micro-particulate matter as debris from coronary lesions, activation of platelets, and/or release of vasoactive substances that may modulate distal vasculature. No-reflow is defined as the reduction of coronary flow in the absence of a proximal occlusive lesion with resultant myocardial ischemia. In PCI of native coronary vessels in absence of acute coronary syndromes, no-reflow may be due to microvascular spasm and/or platelet microemboli. When PCI is performed in thrombotic lesions, such as in acute coronary syndromes, no-reflow may be due to distal embolization of thrombus. During saphenous vein graft intervention and rotational atherectomy, it is most often related to embolization of degenerated plaque elements including thrombotic and atherosclerotic debris. Any or all of these mechanisms can occur simultaneously. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/25 UR - accesscardiology.mhmedical.com/content.aspx?aid=1146606255 ER -