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Abstract
Coronary artery disease is a condition in which there is an inadequate supply of blood and oxygen to the myocardium caused by the presence of plaque that forms in the coronary arteries. Orbital atherectomy is an additional intervention performed to remove calcified plaque lesions from the coronary arteries, this action is carried out with the aim of optimizing stent development or placement. The aim of the study was to determine the procedures performed on patients with coronary artery disease and the results obtained from orbital atherectomy. The type of research used is descriptive research with a case study approach. The research technique used was purposive sampling using two research samples. The research results obtained were in the research of patient Mr. U and Mr. Z underwent the same treatment, namely an orbital atherectomy with the same evaluation of results, namely TIMI 3 flow with a follow-up action, namely the installation of a stent in the patient Mr. U with dimensions of 2.75 mm x 23 mm and in patient Mr. Z with a Drug Eluting Stent type measuring 3.0 mm x 2.75 mm.