Dr. Marcus St. John, Cardiovascular Specialist with Miami Cardiac & Vascular Institute explains what a stent is and how it is used in a heart disease. Stent is used for restoring the flow of blood. Stent is made of stainless steel and chromium cobalt, Dr. St. John describes.
Tightness, pressure or chest pain, pain spreading to arms, shoulders, jaw, neck or back, shortness of breath, weakness and fatigue are the most common symptoms of coronary artery disease. Dr. Marcus St. John, Cardiovascular Specialist with Miami Cardiac & Vascular Institute, affirms many people can feel one or two symptoms. In some cases, patients can feel the same signal for a heart problem during their whole life.
Coronary artery disease is a subset of heart disease. Heart disease encompasses all issues that affect the heart, explains Dr. Marcus St. John, Cardiovascular Specialist with Miami Cardiac & Vascular Institute. Coronary artery disease causes the most morbidity, illness and death. It refers specifically to disease in the blood vessels that bring blood to the heart, which is a muscle, according to him. Atherosclerosis is the build-up of plaque in the heart arteries. The doctor explains how it is caused by bad cholesterol, which can increase due to high blood pressure, smoking and genetic predisposition.
There are three types of heart attacks, according to Dr. Marcus St. John, Cardiovascular Specialist with Miami Cardiac & Vascular Institute who explains what's happening on each one. The most dramatic and most deadly type of heart attack comes when an area in the heart artery, that has already developed plaque or cholesterol, gets inflamed and ruptures. That exposes inside of the artery to the blood supply and causes a coagulation cascade, because a blood clot forms and abruptly cuts off the blood supply to the heart muscle, he describes.
Cardiac catheterization is an invasive diagnostic procedure in which a doctor inserts a tube usually in the arm or the leg, injects x-rays into the arteries and then using an x-ray camera, the physician can see if there are many blockages in those arteries, explains Dr. Marcus St. John, Cardiovascular Specialist with Miami Cardiac & Vascular Institute. The radiation of chest pain to the jaw or to the back of the arm is very common in cases of heart diseases, the specialist says.