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The types of angina are stable, unstable, microvascular, and variant. The types vary based on their severity or cause.

Atherosclerosis is a disease in which plaque builds up inside your arteries. Arteries are blood vessels that carry oxygen-rich blood to your heart and other parts of your body.

Genetic testing may be performed to look for carriers, as well as to screen relatives of people who have cystic fibrosis.

Ventricular fibrillation, a type of arrhythmia, causes most sudden cardiac arrests. Other problems with the heart's electrical system, including diseases or conditions that can cause the electrical problems—such as coronary heart disease, physical stress, certain inherited disorders, and structural changes in the heart—also can lead to sudden cardiac arrest.

Los signos y síntomas frecuentes de la apnea del sueño son los ronquidos o los jadeos durante el sueño, la respiración reducida o ausente (denominada "episodio de apnea") y la somnolencia. La apnea del sueño sin diagnosticar o tratar impide el sueño reparador y puede causar complicaciones que afecten muchas partes del cuerpo.

Long-term exposure to lung irritants—smoke, air pollution, chemical fumes, or dusts—that damage the lungs and the airways usually is the cause of COPD. A rare genetic condition called alpha-1 antitrypsin (AAT) deficiency can also cause the disease.

Having a stent placed is a minimally invasive procedure, meaning it is not a major surgery. Stents for coronary arteries and carotid arteries are placed in similar ways. A stent graft is placed to treat an aneurysm in a procedure called aortic aneurysm repair. Airway stents are placed in a procedure that helps open airways in the lung. For most stents, you will be given medicine to make you sleep during the procedure. The stent procedure may be planned ahead of time or it may be performed in an emergency situation.

Breathing involves two phases: breathing in and breathing out. Your lungs deliver oxygen and remove carbon dioxide from your blood in a process called gas exchange. Gas exchange happens in the capillaries surrounding the alveoli, where the oxygen that is breathed in enters the circulatory system and carbon dioxide in the blood is released to the lungs and then breathed out. If you have problems breathing, gas exchange may be impaired, increasing the risk of serious health problems.

Mild cases of myocarditis and pericarditis may go away without treatment. To treat heart inflammation, your doctor may recommend medicines to fight the infection or control the inflammation, and possibly surgery for certain cases.

Your genes, or other causes such as medical conditions or medicines, can cause bleeding disorders. Sometimes a cause may not be known. Any problem that affects the function or number of clotting factors or platelets can lead to a bleeding disorder.