A localized abnormal dilation of a blood vessel, usually an artery, caused by weakness of the vessel wall; may eventually burst
Angina pectoris
A feeling of constriction around the heart or pain that the left arm or shoulder, usually brought on by exertion; caused by may radiate to insufficient blood supply to the heart
Arrhythmia
Any abnormality in the rate or rhythm of the heartbeat (literally "without rhythm"; note doubled r). Also called dysrhythmia.
Atherosclerosis
The development of fatty, fibrous patches (plaques) in the lining of arteries, causing narrowing of the lumen and hardening of the vessel wall. The most common form of arteriosclerosis (hardening of the arteries). Root ather/o means "porridge" or "gruel."
Bradycardia
A slow heart rate of less than 60 beats per minute
Cerebrovascular accident (CVA)
Sudden damage to the brain resulting from reduction of blood flow. Causes include atherosclerosis, embolism, thrombosis, or hemorrhage from a ruptured aneurysm; commonly called stroke.
Clubbing
Enlargement of the ends of the fingers and toes caused by growth of the soft tissue around the nails. Seen in a variety of diseases in which there is poor peripheral circulation.
Cyanosis
Bluish discoloration of the skin caused by lack of oxygen
Deep vein thrombosis (DVT)
Thrombophlebitis involving the deep veins
Diaphoresis
Profuse sweating
Dissecting aneurysm
An aneurysm in which blood enters the arterial wall and separates the layers. Usually involves the aorta
Dyslipidemia
Disorder in serum lipid levels, which is an important factor in development of atherosclerosis. Includes hyperlipidemia (high lipids), hypercholesterolemia (high cholesterol), hypertriglyceridemia (high triglycerides)
Dyspnea
Difficult or labored breathing (-pnea)
Edema
Swelling of body tissues caused by the presence of excess fluid. Causes include cardiovascular disturbances, kidney failure, inflammation, and malnutrition.
Embolism
Obstruction of a blood vessel by a blood clot or other matter carried in the circulation
Embolus
A mass carried in the circulation. Usually a blood clot, but may also be air, fat, bacteria, or other solid matter from within or from outside the body.
Fibrillation
Spontaneous, quivering, and ineffectual contraction of muscle fibers, as in the atria or the ventricles
Heart block
An interference in the conduction system of the heart resulting in arrhythmia. The condition is classified in order of increasing severity as first-, second-, or third-degree heart block. Block in a bundle branch is designated as a left or right bundle branch block (BBB).
Heart failure
A condition caused by the inability of the heart to maintain adequate circulation of blood
Hemorrhoid
A varicose vein in the rectum
Hypertension
A condition of higher-than-normal blood pressure. Essential (primary, idiopathic) hypertension has no known cause.
Infarct
An area of localized necrosis (death) of tissue resulting from a blockage or a narrowing of the artery that supplies the area
Murmur
An abnormal heart sound
Ischemia
Local deficiency of blood supply caused by obstruction of the circulation (root hem/o)
Myocardial infarction (MI)
Localized necrosis (death) of cardiac muscle tissue resulting from blockage or narrowing of the coronary artery that supplies that area. Myocardial infarction is usually caused by formation of a thrombus (clot) in a vessel
Occlusion
A closing off or obstruction, as of a vessel
Patent ductus arteriosus
Persistence of the ductus arteriosus after birth. The ductus arteriosus is a vessel that connects the pulmonary artery to the descending aorta in the fetus to bypass the lungs.
Phlebitis
Inflammation of a vein
Plaque
A patch. With regard to the cardiovascular system, a deposit of fatty material and other substances on a vessel wall impedes blood flow and may block the vessel. Atheromatous plaque.
Rheumatic heart disease
Damage to heart valves after infection with a type of streptococcus (group A hemolytic streptococcus). The antibodies produced in response to the infection produce scarring of the valves, usually the mitral valve.
Shock
Circulatory failure resulting in inadequate supply of blood to the heart. Cardiogenic shock is caused by heart failure; hypovolemic shock is caused by a loss of blood volume; septic shock is caused by bacterial infection.
Stenosis
Constriction or narrowing of an opening
Stroke
Cerebrovascular Accident
Syncope
A temporary loss of consciousness caused by inadequate blood flow to the brain; fainting
Tachycardia
An abnormally rapid heart rate, usually over 100 beats per minute
Thrombophlebitis
Inflammation of a vein associated with formation of a blood clot
Thrombosis
Development of a blood clot within a vessel
Thrombus
A blood clot that forms within a blood vessel (root thromb/o)
Varicose vein
A twisted and swollen vein resulting from breakdown of the valves, pooling of blood, and chronic dilatation of the vessel (root varic/o); also called varix or varicosity
Angioplasty
A procedure that reopens a narrowed vessel and restores blood flow. Commonly accomplished by surgically removing plaque, inflating a balloon within the vessel, or installing a device (stent) to keep the vessel open.