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Several competing theories explained the occurrence of a blood clot, and although the theories were largely abandoned, it was still thought that blood contained a liquifying agent, [151] i.e. fibrin held in a solution of ammonia [152] that became known as the "Ammonia theory". [150] In 1824, Charles Scudamore had proposed carbonic acid as the ...
Charles Richard Drew (June 3, 1904 – April 1, 1950) was an American surgeon and medical researcher. He researched in the field of blood transfusions, developing improved techniques for blood storage, and applied his expert knowledge to developing large-scale blood banks early in World War II.
Deep vein thrombosis (DVT) is the formation of a blood clot within a deep vein. It most commonly affects leg veins, such as the femoral vein. Three factors are important in the formation of a blood clot within a deep vein—these are: the rate of blood flow, the thickness of the blood and; qualities of the vessel wall.
Blood clot: Diagram of a thrombus (blood clot) that has blocked a vein valve: Specialty: Vascular surgery: Symptoms: abrupt change in mental status, chest pain, cramp-like feeling, fatigue, passing out , and swelling in the arm and/or leg: Complications: bleeding risks from taking anticoagulants, breathing problems, heart attacks, stroke: Duration
For the prevention of blood clots in the general population, incorporating leg exercises while sitting down for long periods, or having breaks from a sitting position and walking around, having an active lifestyle, and maintaining a healthy body weight are recommended. [6] Walking increases blood flow through the leg veins. [152]
Most notably, his acclaim marked the shift away from the miasma theory in medicine. Pasteur's influence on Lister demonstrates the union of scientific research and informed medical practice. Lister's claim that bacteria causes wound infection and that wounds must be kept clean, are still important principles of modern medical care. Louis Pasteur
Thromboembolism is a condition in which a blood clot breaks off from its original site and travels through the bloodstream (as an embolus) to obstruct a blood vessel, causing tissue ischemia and organ damage. Thromboembolism can affect both the venous and arterial systems, with different clinical manifestations and management strategies.
This blood clot may then restrict blood flow within the heart, leading to heart tissue damage, or a myocardial infarction, also known as a heart attack. [ 1 ] Coronary thrombosis is most commonly caused as a downstream effect of atherosclerosis , a buildup of cholesterol and fats in the artery walls.