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- Heart disease - Symptoms and causes - Mayo ClinicHeart failure. This is one of the most common complications of heart disease. The heart can't pump enough blood to meet the body's needs. Heart attack. A heart attack can happen if a piece of plaque in an artery or a blood clot moves to the heart. Stroke. The risk factors that lead to heart disease also can lead to an ischemic stroke.
- How the Heart Works - What the Heart Looks Like - NHLBI, NIHAnatomy of the interior of the heart. This image shows the four chambers of the heart and the direction that blood flows through the heart. Oxygen-poor blood, shown in blue-purple, flows into the heart and is pumped out to the lungs. Then oxygen-rich blood, shown in red, is pumped out to the rest of the body, with the help of the heart valves.
- How the Heart Works How Blood Flows through the HeartOxygen-poor blood from the body enters your heart through two large veins called the superior and inferior vena cava. The blood enters the heart's right atrium and is pumped to your right ventricle, which in turn pumps the blood to your lungs. The pulmonary artery then carries the oxygen-poor blood from your heart to the lungs.
- Heart attack - Symptoms & causes - Mayo ClinicHeart attack damage can affect how electrical signals move through the heart, causing heartbeat changes. Some may be serious and can be deadly. Cardiogenic shock. This rare condition occurs when the heart is suddenly and abruptly unable to pump blood. Heart failure. A lot of damage to the heart muscle tissue can make the heart unable to pump blood.
- Heart arrhythmia - Symptoms and causes - Mayo ClinicA heart arrhythmia (uh-RITH-me-uh) is an irregular heartbeat. A heart arrhythmia occurs when the electrical signals that tell the heart to beat don't work properly. The heart may beat too fast or too slow. Or the pattern of the heartbeat may be inconsistent. A heart arrhythmia may feel like a fluttering, pounding or racing heartbeat.
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