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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.

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.

Sometimes VTE does not cause symptoms until serious complications occur. In other cases, deep vein thrombosis causes swelling or discomfort near the blood clot. Pulmonary embolism can cause chest pain and difficulty breathing. Pulmonary embolism can be a life-threatening condition.

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.

Typically doctors screen for atrial fibrillation only when you have symptoms. However, your doctor may check for signs of atrial fibrillation as part of your regular medical care. Screening tests include checking your pulse or recording your heart’s electrical activity.

The exact cause of asthma is unknown, and the causes may vary from person to person. However, asthma is often the result of a strong response of the immune system to an allergen in the environment.

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

Sickle Cell Disease – Screening and Prevention People who do not know whether they carry an abnormal hemoglobin gene can ask their doctor to have their blood tested. Sickle Cell Anemia, Hemoglobin S or SS disease, Sickling disorder due to hemoglobin S

Causes of cardiogenic shock include heart attack and other heart problems, problems outside of the heart, and medicines or procedures. A heart attack is the most common cause because it can damage the heart’s structure in different ways. Less often, a problem elsewhere in the body blocks blood flow coming into or out of the heart and leads to cardiogenic shock.