· coronary artery disease, other heart problems and previous heart surgery. Worried about qt interval prolongation? Narrowed heart arteries, a heart attack, heart valve disease, prior heart surgery, heart failure, … The blood enters the hearts right atrium and is pumped to … 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 … Some risk factors — such as high blood pressure and … · 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. · heart failure is a condition that occurs when your heart cant pump enough blood for your bodys needs. It has four hollow chambers surrounded by muscle and other heart tissue. · your heartbeat is the contraction of your heart to pump blood to your lungs and the rest of your body. Your heart is at the center of your circulatory … · your heart is in the center of your chest, near your lungs. 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 … · your risk of coronary heart disease increases based on the number of risk factors you have and how serious they are. It is made up of multiple layers of tissue. · 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. · cardiomyopathy (kahr-dee-o-my-op-uh-thee) is a disease of the heart muscle. Learn about the symptoms, causes, risk factors, and treatments for heart … · oxygen-poor blood from the body enters your heart through two large veins called the superior and inferior vena cava.