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1st Int. Transborder Conf. of the Timor Island: Timor %u2013 Science without borderDili, 7-8 May 2025131Coronary Intervention In A Patient With Angina PectorisSergio H. G. FernandesFaculdade de Medicina e Ci%u00eancias de Sa%u00fade, Universidade Nacional de Timor LorosaeAbstractThe primary function of the cardiovascular system is to circulate blood throughout the body, including to the heart itself. Coronary artery disease, which leads to a reduction%u2014either absolute or relative%u2014in coronary blood flow through various mechanisms, is known as ischemic heart disease (IHD). It is the leading cause of death worldwide.According to official data from the World Health Organization, 17.9 million people die each year from cardiovascular diseases. More than half of these deaths occur in Asia, with numbers rising from 5.6 million in 1990 to 10.8 million in 2019. The majority of cardiovascular-related deaths are caused by ischemic heart disease. In Timor-Leste, coronary artery disease accounted for 11.5% of all deaths in 2020, with 814 recordedcases. The age-adjusted mortality rate was 126.6 per 100,000 population, placing TimorLeste 69th globally in terms of coronary mortality. Ischemic heart disease is characterized by reduced blood flow in the coronary arteries. Stable angina pectoris, the most common clinical manifestation of IHD, presents as chest pain (precordial pain) with characteristic radiation. It is typically triggered by physical exertion or emotional stress and relieved by rest or administration of nitroglycerin. This case study highlights the effectiveness of treating stable angina pectoris, with a focus on the diagnostic and therapeutic roles of invasive coronary angiography and angioplasty. It discusses a patient who continued to experience symptoms despite optimal medical management. While non-invasive tests revealed severe mitral valve insufficiency, invasive coronary angiography uncovered multivessel disease with significant obstructive lesions. Treatment with drug-eluting stents not only alleviated the patient's symptoms but also led to a marked improvement in the severity of the mitral insufficiency. This case illustrates the value of coronary angioplasty in managing both the symptoms and complications of stable angina. It demonstrates that, when combined with medical therapy, angioplasty can improve clinical outcomes, including associated cardiac conditions such as mitral insufficiency.Keywords: Angina pectoris; ischemic heart disease; Invasive coronary angiography; Coronary angioplasty.