Human Heart The heart is a muscular organ that is situated in the front of the chest. It pumps blood all through the body in a process called circulation. Apart from the heart, the blood …

Jan 21, 2025 · Some heart conditions slowly leave the heart too weak or stiff to fill and pump blood properly. These conditions include narrowed arteries in the heart and high blood …

Jan 29, 2025 · Ejection fraction is a measurement of the percentage of blood leaving the heart each time it squeezes. When the heart squeezes, it's called a contraction. Ejection fraction is …

Dec 9, 2023 · The blood can give many clues about heart health. For one, high levels of "bad" cholesterol in the blood can be a sign of higher risk of having a heart attack. And other …

Jun 4, 2025 · The heart's conduction system also is called the heart's electrical signaling system. Electrical signals start in a group of cells at the top of the heart called the sinus node. The …

Aug 13, 2024 · Symptoms Heart disease symptoms depend on the type of heart disease. Symptoms of heart disease in the blood vessels Coronary artery disease is a common heart …

Oct 17, 2024 · Chemotherapy side effects may include a risk of heart conditions, such as weakened heart muscle (cardiomyopathy) and irregular heart rhythms (arrhythmias).

Jan 21, 2025 · Heart failure Diagnosis To diagnose heart failure, your healthcare professional examines you and asks questions about your symptoms and medical history. Your care …

Dec 7, 2024 · Sudden cardiac arrest Overview Sudden cardiac arrest (SCA) is the sudden loss of all heart activity due to an irregular heart rhythm. Breathing stops. The person becomes …

May 22, 2025 · Coenzyme Q10 is an antioxidant the body naturally makes. Coenzyme Q10 also is called CoQ10. Antioxidants can help protect the body from cell damage. Cells use CoQ10 for …