What causes blood clots ?

Question

in ur head and lungs and stuff ?

Answer 1

What Is Pulmonary Embolism?

A pulmonary embolism (PULL-mun-ary EM-bo-lizm), or PE, is a sudden blockage in a lung artery, usually due to a blood clot that traveled to the lung from a vein in the leg. A clot that forms in one part of the body and travels in the bloodstream to another part of the body is called an embolus.

PE is a serious condition that can cause:

Permanent damage to part of your lung from lack of blood flow to lung tissue

Low oxygen levels in your blood

Damage to other organs in your body from not getting enough oxygen

If the blood clot is large, or if there are many clots, PE can cause death.

Overview

In most cases, PE is a complication of a condition called deep vein thrombosis (DVT). In DVT, blood clots form in the deep veins of the body—most often in the legs. These clots can break free, travel through the bloodstream to the lungs, and block an artery.

This is unlike clots in the veins close the skin's surface, which remain in place and do not cause PE.

Outlook

At least 100,000 cases of PE occur each year in the United States. PE is the third most common cause of death in hospitalized patients. If left untreated, about 30 percent of patients with PE will die. Most of those who die do so within the first few hours of the event.

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Answer 2

You can get a blood clot from long periods of inactivity, such as sitting in a plane for several hours, or by lying down too long, such as being bed-ridden as in a hospital bed. It can also be a genetic disorder. Blood clots usually form in a large vein, such as in the lower legs and can become dislodged and travel up to the heart. Sometimes the clot can get stuck in the heart, or it can be small enough to pass through the heart and become stuck in the lung, causing a pulmonary embolism. If not in the lung, it could become lodged in the arteries in the brain, causing a stroke.

Answer 3

You can get blood clots from banging your self on something...like bruising only under the skin.

Blood collects and clots.

You can get blood clots from sitting in one place where there is no ciruclation and again, the blood clots in one place.

So basically clots are from injuries and from lack of circulation.