![]() If a blood clot forms somewhere in the body (often the heart) it can travel through the bloodstream to the brain. This is called a stroke and in phlebology terms, this is known as a Paradoxical Clot Embolism. It is in these circumstances that the clot can go straight into the cerebral (brain) vessels, causing a blockage of blood flow to parts of the brain. In certain circumstances, a genetic hole in the wall of the heart that separates the right and left sides can allow for the passage of the blood clot, bypassing the lungs. The symptoms of a PE may include chest pain, shortness of breath, and fatigue. This is a medical emergency and has a high mortality rate. This is called a Pulmonary (Lung) Embolism (a blood clot that has travelled from one area to another) or PE. It is here that it can cause severe obstruction of blood flow to the lungs. This is what happens with a DVT, the blocked vein causes obstruction of blood flow up the major vein highway.Ī blood clot (particularly in the leg) is most severe and dangerous when it dislodges, travels up the vein carried by normal blood, into the right side of the heart and then into the large pulmonary/lung arteries. Put another way, a blocked vein is like having a massive car pile-up along the motorway, causing kilometres and kilometres of banked-up cars. This stops the blood from flowing up toward the heart, which can lead to a medical emergency or at the very least a severely painful and swollen lower leg. If it forms a large enough clump, it can block the vein. The blood inside a vein congeals or thickens. This is very much like deep vein thrombosis. ![]() Milk transforms from a free-flowing liquid into a clotted, curdled mess. To understand the top 3 causes, first, we need to understand what happens to blood when it transforms from a liquid into a congealed mass.Ĭurdled milk gives a good demonstration of blood clotting. There are many reasons why blood may clot within a vein. ![]() Blood clots can occur within any deep vein but most commonly in the internal leg veins. Veins return deoxygenated blood from the extremities to the heart). (The difference between arteries and veins: Arteries take oxygenated blood away from the heart, circulating it around the body. Let’s look at three causes of deep vein thrombosis in the general population and how to minimise the risks.ĭeep vein thrombosis is a blood clot within the internal veins, not arteries, of the body. Deep vein thrombosis (DVT) has been in the news for all the wrong reasons recently, leaving many confused about what it is and its causes.
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