What Is Coronary Heart Disease? - NHLBI, NIH
2023年12月20日 · Coronary heart disease is a type of heart disease where the arteries of the heart cannot deliver enough oxygen-rich blood to the heart. It is also sometimes called coronary artery disease or ischemic heart disease. About 20.5 million U.S. adults have coronary artery disease, making it the most common type of heart disease in the United States ...
How the Heart Works - How Blood Flows through the Heart
2022年3月24日 · Some conditions can affect normal blood flow through these heart arteries. Examples include: Angina; Heart attack; Coronary heart disease; The coronary veins return oxygen-low blood from the heart's muscles back to the right atrium so it can be pumped to the lungs. They include: The anterior cardiac veins; The great cardiac vein; The middle ...
How Smoking Affects the Heart and Blood Vessels - NHLBI, NIH
2022年3月24日 · It can damage the heart and blood vessels of people who don’t smoke in the same ways that smoking causes damage to people who do. The image shows how smoking can affect arteries. Figure A shows the location of coronary heart disease and peripheral artery disease. Figure B shows a leg artery with plaque buildup partially blocking blood flow.
Coronary Heart Disease - Causes and Risk Factors - NHLBI, NIH
2023年12月20日 · Damage to the inner walls of the larger coronary arteries can cause them to spasm (suddenly tighten). This is called vasospasm — the spasm causes the arteries to narrow temporarily and blocks blood flow to the heart. Coronary microvascular disease in small arteries and obstructive coronary artery disease in large arteries.
Coronary Heart Disease - Diagnosis - NHLBI, NIH
2023年12月20日 · An electrocardiogram (ECG or EKG) records the strength and timing of electrical signals as they pass through the heart and determines whether the heart’s rhythm is steady or irregular. A coronary calcium scan measures the amount of calcium in the walls of your coronary arteries. This test is a type of cardiac computed tomography (CT) scan.
SARS-CoV-2 infects coronary arteries, increases plaque inflammation
2023年9月28日 · 301-496-5449. SARS-CoV-2, the virus that causes COVID-19, can directly infect the arteries of the heart and cause the fatty plaque inside arteries to become highly inflamed, increasing the risk of heart attack and stroke. The findings may help explain why certain people who get COVID-19 have a greater chance of developing cardiovascular disease ...
Physical Activity and Your Heart - Benefits | NHLBI, NIH
2022年3月24日 · Plaque narrows the arteries and reduces blood flow to your heart muscle. Eventually, an area of plaque can rupture (break open). This causes a blood clot to form on the surface of the plaque. If the clot becomes large enough, it can mostly or completely block blood flow through a coronary artery. Blocked blood flow to the heart muscle causes a ...
What Is Coronary Artery Bypass Grafting? - NHLBI, NIH
2022年3月24日 · Español. Coronary artery bypass grafting (CABG), also called heart bypass surgery, is a medical procedure to improve blood flow to the heart. It may be needed when the arteries supplying blood to the heart, called coronary arteries, are narrowed or blocked. Your doctor may recommend the surgery to lower your risk of a heart attack if you have ...
Atherosclerosis - What Is Atherosclerosis? | NHLBI, NIH
2024年10月28日 · Español. Atherosclerosis is a common disease that develops when a sticky plaque called plaque builds up in your arteries . Diseases linked to atherosclerosis are the leading cause of death in the United States and the world. Atherosclerosis develops slowly as cholesterol , fat, blood cells, and other substances in your blood form plaque in the ...
Heart Attack - Causes and Risk Factors - NHLBI, NIH
2022年3月24日 · The most common cause of a heart attack is coronary artery disease, which is the most common type of heart disease. This is when your coronary arteries cannot carry enough oxygen-rich blood to your heart muscle. Most of the time, coronary artery disease happens when a waxy substance called plaque builds up inside your arteries, causing the ...