TAILIEUCHUNG - Handbook of Advanced Interventional Cardiology - part 6

Khi đi qua động mạch vành bị bệnh nặng và thao tác thiết bị, đặc biệt là các thiết bị với các thành phần có thể tháo rời, cơ hội bị mất hoặc thuyên tắc của vật liệu trong lưu thông mạch vành xuất hiện. | 320 Practical Handbook of Advanced Interventional Cardiology of coronary arteries and are operated from a significant distance. When traversing severely diseased coronary arteries and manipulating equipment particularly devices with detachable components the opportunity for loss or embolization of material in the coronary circulation presents itself. In this chapter we will review and discuss the management strategies for embolized material. GENERAL PRINCIPLE When a problem with defective equipment unexpandable stent uncoiling wire asymmetrically bulging balloon due to metal fatigue twisted guide etc. arises inside the coronary artery or the ascending aorta the ideal is to remove the entire system below the level of the renal arteries so the problem can be corrected without risk of cerebral embolization or to any vital organ. In the case of a stent that slips off the delivery balloon inside the coronary artery it cannot be brought to the iliac artery simply by withdrawing the whole system even as a unit. Pulling the indwelling angioplasty wire will leave a loose free stent behind. So all efforts are concentrated on keeping the wire inside the stent and across the lesion for prompt access of rescue devices. As a stent slips off the delivery balloon there are two options either to retrieve it or to deploy it in a safe non-target location. Retrieval should be attempted if threatening malposition occurs or if the stent is loose in the aorta or in another location in which deployment cannot be undertaken safely. In the retrieval strategy the stent should be brought safely below the renal arteries so there is no chance for systemic embolization. Once below the renal arteries level the next important step is to remove the embolized stent from the femoral sheath without injuries to the femoral artery or need of arterial cut-down. Everything should be done within an acceptable time frame with a wire still across the lesion. In the meantime the patient has to be watched .

Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.