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Hace 2 días · A myocardial infarction (MI), commonly known as a heart attack, occurs when blood flow decreases or stops in one of the coronary arteries of the heart, causing infarction (tissue death) to the heart muscle.
Hace 5 días · Cardiac arrest, also known as sudden cardiac arrest, is when the heart suddenly and unexpectedly stops beating. [11] [1] As a result, blood cannot properly circulate around the body and there is diminished blood flow to the brain and other organs. When the brain does not receive enough blood, this can cause a person to lose consciousness.
Hace 3 días · It is used to evaluate and quantify cardiac size and function, valvular function, and can assist with diagnosis and treatment of conditions including heart failure, heart attack, valvular heart disease, congenital heart defects, pericardial disease, and aortic disease.
Hace 5 días · Heart, organ that serves as a pump to circulate the blood. It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered double pump that is the center of the circulatory system in humans, other mammals, and birds. Learn more about the heart in this article.
- In humans, the heart is situated between the two lungs and slightly to the left of center, behind the breastbone. It rests on the diaphragm, the mu...
- The heart consists of several layers of a tough muscular wall, the myocardium. A thin layer of tissue, the pericardium, covers the outside, and ano...
- The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are stimula...
- The rhythmic noises accompanying the heartbeat are called heart sounds. The two distinct sounds are heard, a low, slightly prolonged “lub” (first s...
Hace 5 días · Heart Health. Microplastics in arteries linked to heart disease risk. Published June 1, 2024. A 2024 study found that people with microplastics in the plaque clogging their neck arteries were about four times more likely to have a heart attack or stroke than people with plastic-free plaque. Heart Health.
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Hace 4 días · Men younger than age 65 and women under age 50 who are overweight or have had obesity for 10 years have a greater risk of heart attack and stroke, according to a new study presented at the...
Hace 3 días · Heart attacks are a leading cause of death worldwide, making it crucial to recognize their symptoms and seek prompt medical attention. Whether you're concerned about your heart health or simply want to be prepared, this comprehensive guide will help you understand the signs of a heart attack and what steps to take if you or someone else experiences them.
