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Sleep plays a vital role in good health and well-being throughout your life. The way you feel while you are awake depends in part on what happens while you are sleeping. During sleep, your body is working to support healthy brain function and maintain your physical health. In children and teens, sleep also helps support growth and development. Getting inadequate sleep over time can raise your risk for chronic health problems. It can also affect how well you think, react, work, learn, and get along with others. Learn how sleep affects your heart and circulatory system, metabolism, respiratory system, and immune system and how much sleep is enough.

Atrial fibrillation is a type of arrhythmia. There are four main types of atrial fibrillation—paroxysmal, persistent, long-term persistent, and permanent atrial fibrillation.

To diagnose a conduction disorder, your doctor will ask about your medical history, any signs and symptoms, and your family’s medical history, and he or she will perform a physical exam. Your doctor may also recommend tests to look at your heart’s electrical activity and structure and to determine if you have genetic changes that may signal a conduction disorder.

Bleeding disorders can be inherited, or they can be acquired, meaning you develop them during your lifetime. Acquired bleeding disorders are more common than inherited bleeding disorders.

Vasculitis occurs when your immune system injures your blood vessels by mistake. What causes this to happen is not fully known, but when it occurs, your blood vessels become inflamed and can narrow or close off. Rarely, the blood vessel wall may weaken, causing it to expand or bulge. This bulge is known as an aneurysm.

Risk factors for VTE include a history of a previous VTE event; surgery; medical conditions such as cancer or spinal cord injury; pregnancy; paralysis or long periods of immobilization; specific genes; and certain circumstances related to age, race, and sex. In most cases of VTE, there is more than one risk factor involved. The more risk factors you have, the greater the chance you have of developing VTE.

Your doctor will diagnose ischemic heart disease based on your symptoms, your medical and family history, your risk factors, and the results from tests and procedures

You may have an increased risk for angina because of your age, environment or occupation, family history and genetics, lifestyle, other medical conditions, race, or sex.

VTE occurs in the veins that carry blood to your heart. Blood clots can develop in veins damaged by surgery or trauma, or a result of inflammation in response to an infection or injury.

Algunos factores de riesgo para el TEV pueden ser un episodio anterior de TEV; una cirugía; afecciones como el cáncer o una lesión de la médula espinal; el embarazo; parálisis o períodos largos de inmovilización; genes específicos, y ciertas circunstancias relacionadas con la edad, la raza y el sexo. En la mayoría de los casos de TEV, existe más de un factor de riesgo involucrado. Cuantos más factores de riesgo tenga, mayores serán las probabilidades de padecer TEV.