Ricochet vs. Channel vs. Trending Comparisons. Mandate vs. Ivermectin vs. Skinwalker vs. Socialism vs. Man vs. Supersonic vs. Gazelle vs. Jem vs. Mouse vs. Lubuntu vs. You vs. Virtual vs. Featured Comparisons Guidence vs. Togather vs. When a clot or embolus blocks a major or deep vein, blood pools behind the obstruction, causing inflammation. Though they can occur anywhere, most cases of venous thrombosis develop in the deep veins of the lower legs.
Blockages that occur in the small or superficial veins tend not to cause major complications. Pulmonary embolism PE occurs when a piece of a blood clot breaks free and travels through the blood stream to the lungs. It then becomes lodged in a blood vessel. Pulmonary embolism can be very dangerous and develop extremely rapidly. In about 25 percent of pulmonary embolism cases, sudden death is the first symptom.
Seek immediate medical attention if you suspect PE. Arterial thrombosis is often associated with atherosclerosis. Atherosclerosis is the development of plaques, or fatty hardenings, on the inner wall of an artery. Plaques cause the artery to narrow. This increases the amount of pressure in the blood vessel. If this pressure becomes intense enough, the plaque can become unstable and rupture. Sometimes when a plaque ruptures the immune system overreacts.
This can lead to the development of a large clot and a life-threatening condition, like a heart attack or stroke. When a blood vessel wall is injured, blood cells, called platelets and proteins, form a solid mass over the wound. Medical Review: E. This information does not replace the advice of a doctor.
Healthwise, Incorporated, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.
If it becomes stuck and severely blocks the flow of blood, the issue is called an embolism. Any blockage in a vein or artery can cause life threatening complications. One way that doctors classify these blockages is based on where they occur.
One of the most common types of embolism, for example, is pulmonary embolism. This happens when an embolus travels to the veins of the lungs, disrupting blood flow. Like any blockage that interferes with blood flow to the heart, pulmonary embolism can lead to a stroke or heart attack. Learn more about blood clots in the circulatory system here.
This involves thrombosis in the deep veins. DVT can only become pulmonary embolism if the blood clot moves to the lungs. DVT often affects the pelvis and legs. A pulmonary embolism involves a blood clot or foreign material becoming trapped in the veins of the lungs, disrupting blood flow.
It is a medical emergency, and some symptoms include :. A person may have stroke symptoms , such as numbness or weakness , or heart attack symptoms , such as intense chest pain and nausea. Arterial thrombosis involves a blockage in an artery, which carries blood away from the heart.
A vein, by contrast, carries blood toward the heart. Symptoms of arterial thrombosis are similar to those of a blockage in a vein.
0コメント