The all of the vascles and heart in body forms a system called cardiovascular system that involved blood circulation all through the body. This system is also called circulatory system. Pulmonary system is also link with cardiovascular system because it participate exchange of gas between lung and blood stream.
Any disease in any parts or organ of circulatory system that restrict blood flow or irregular blood flow or abnormal blood flow is called cardiovascular disease.
Infection in blood may be a disease of blood but may not termed as cardiovascular disease. On the other hand the abnormal sugar level in blood stream may term as diabetes melitus but it may not cardiovascular disease. Though, diabetes melitus can significantly increase the blood pressure and may cause acute hypertension. But yet it may not termed as cardiovascular disease.
But any blood clot formed inside the wall of blood vessels, hypertension, hypotension, tachycardia, bradycardia, inflammation of heart, infection of heart or carditis, Myocardial infarction, Angina pectoris can be termed as cardiovascular disease.
