Your heart is at the center of your circulatory … The blood enters the hearts right atrium and is pumped to … · your risk of coronary heart disease increases based on the number of risk factors you have and how serious they are. Worried about qt interval prolongation? This online evidence based resource will help guide you how to measure the qt interval and calculate the qtc value with an easy to use calculator which … It has four hollow chambers surrounded by muscle and other heart tissue. · your heart is in the center of your chest, near your lungs. · the heart is an organ about the size of your fist that pumps blood through your body. Your hearts electrical system determines how fast your heart beats. · symptoms of heart disease in the blood vessels coronary artery disease is a common heart condition that affects the major blood vessels that supply the heart muscle. It is made up of multiple layers of tissue. · coronary heart disease is a type of heart disease that occurs when the arteries of the heart cannot deliver enough oxygen -rich blood to the heart muscle due to narrowing from … It causes the heart to have a harder time pumping blood to the rest of the body, which can lead to … The chambers are separated by heart … · coronary artery disease, other heart problems and previous heart surgery. Some risk factors — such as high blood pressure and … · cardiomyopathy (kahr-dee-o-my-op-uh-thee) is a disease of the heart muscle. Narrowed heart arteries, a heart attack, heart valve disease, prior heart surgery, heart failure, … · your heartbeat is the contraction of your heart to pump blood to your lungs and the rest of your body. · oxygen-poor blood from the body enters your heart through two large veins called the superior and inferior vena cava.