Search Media Items

You may or may not notice atrial fibrillation. It often occurs with no signs or symptoms. If you do have symptoms, you may notice something that occurs only occasionally. Or, your symptoms may be frequent or serious.

Heart disease is the leading cause of death for women. Learn more about how the causes, risk factors, symptoms, diagnosis, and treatment of ischemic heart disease may be different for women than for men.

Many factors play a role in preparing your body to fall asleep and wake up. Your body has several internal clocks, called circadian clocks. These typically follow a 24-hour repeating rhythm, called the circadian rhythm. This rhythm affects every cell, tissue, and organ in your body and how they work.

Arrhythmia is caused by changes to heart tissue. It can also occur suddenly as a result of exertion or stress, imbalances in the blood, medicines, or problems with electrical signals in the heart. Typically, an arrhythmia is set off by a trigger, and the irregular heartbeat can continue if there is a problem in the heart. Sometimes the cause of an arrhythmia is unknown.

Your doctor may recommend cardiac catheterization to find out what is causing signs or symptoms of a heart problem or to treat or repair a heart problem.

If you have known risk factors for developing an aortic aneurysm, your doctor may recommend screening. To screen for an aortic aneurysm, your doctor may recommend an imaging study to look at and measure the aorta. An aneurysm can develop and grow without any symptoms until it ruptures or dissects—events that are both life-threatening. If the aneurysm is found early, treatment or surgery may slow its growth and prevent rupture or dissection.

Angina happens when your heart muscle does not get enough oxygen-rich blood. Medical conditions, particularly ischemic heart disease, or lifestyle habits can cause angina. To understand the causes of angina, it helps to understand how the heart works.

There are two types of aortic aneurysms: thoracic aortic aneurysms and abdominal aortic aneurysms.

People who do not know whether they carry an abnormal hemoglobin gene can ask their doctor to have their blood tested. Couples who are planning to have children and know that they are at risk of having a child with sickle cell disease may want to meet with a genetic counselor.

Las causas de la anemia por deficiencia de hierro incluyen la pérdida de sangre, consumir muy poco hierro, problemas para absorber el hierro y ciertas afecciones.