A type of regular and fast heart rate that arises from improper electrical activity in the ventricles of the heart. May result in cardiac arrest

Low red blood cell count caused by inadequate vitamin B12. Abbreviated PA. Patients with PA do not produce intrinsic factor (IF), a substance that allows the body to absorb vitamin B12 from foods. The resulting inadequacy of vitamin B12 hampers the production of red blood cells.

A heart rhythm problem that occurs when the heart beats with rapid, erratic electrical impulses. This causes pumping chambers in your heart (the ventricles) to quiver uselessly, instead of pumping blood.

A condition in which a vein becomes inflamed The inflammation may cause pain and swelling.

A condition resulting in discoloration of fingers and/or toes when a person is exposed to changes in temperature (cold or hot) or emotional events. The skin discoloration occurs because an abnormal spasm of the blood vessels causes a diminished blood supply.

Invasion of the bloodstream by virulent microorganisms (as bacteria, viruses, or fungi) from a focus of infection that is accompanied by acute systemic illness — called also blood poisoning.

A genetic blood disease due to the presence of an abnormal form of hemoglobin, namely hemoglobin S, which causes blood cells to have an abnormal shape.

A relatively rapid heart action whether physiological (as after exercise) or pathological.

A condition in which the temporal arteries, which supply blood to the head and brain, become inflamed or damaged.

A method of examining the heart to obtain information about the blood supply to the heart muscle.

A condition in which you have a low blood platelet count. Platelets (thrombocytes) are colorless blood cells that help blood clot. Platelets stop bleeding by clumping and forming plugs in blood vessel

A therapy, is a treatment to dissolve dangerous clots in blood vessels, improve blood flow, and prevent damage to tissues and organs

The formation or presence of a blood clot in a blood vessel. The vessel may be any vein or artery .

Any vascular blockage caused by a thrombus or by thromboembolism.

A stationary blood clot along the wall of a blood vessel, frequently causing vascular obstruction.

a serious complication that can occur after a blood transfusion. The reaction occurs when the red blood cells that were given during the transfusion are destroyed by the person's immune system.

Inflammation of a valve especially of the heart.

A vein that has enlarged and twisted, often appearing as a bulging, blue blood vessel that is clearly visible through the skin. Conditions are most common in older adults, particularly women, and occur especially on the legs.