what does it mean when someone is losing blood?
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Bleeding, also called hemorrhage, is the name used to describe blood loss. It can refer to blood loss inside the body, called internal bleeding, or to blood loss outside of the body, called external bleeding. Blood loss can occur in almost any area of the body.
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When you don't have enough healthy red blood cells, you have a condition called anemia. This means your blood has lower than normal hemoglobin (Hgb) levels. Hemoglobin is the part of the red blood cell (RBC) that carries oxygen to all the cells in your body. Anemia is a common side effect in patients with cancer.
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Blood on the ground in a dream indicates that the dreamer should be careful of unusual or new friendships. ... To lose blood in your dream represents that you may be tired in your waking life and that you feel emotional. If you dream you are in the hospital and you see blood, it means that past actions may haunt you.
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Blood flow to a certain part of the brain may be decreased or interrupted by: Blood clots. Bleeding because of a ruptured blood vessel. Damage to a blood vessel from atherosclerosis, infection, or other causes, such as an autoimmune disorder.
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More severe haemorrhage (over about 30% of blood volume or 1.5 litres in an average person) usually leads to a decrease in blood pressure. Baroreceptor stimulation is much reduced and the sympathetic nerves are strongly stimulated. This results in powerful constriction of blood vessels, seen in the skin as pallor.
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Intra-abdominal bleeding may be hidden and present only with pain, but if there is enough blood loss, the patient may complain of weakness, lightheadedness, shortness of breath, and other symptoms of shock and decreased blood pressure. Once again, the symptoms depend upon where in the abdomen the bleeding occurs.
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When you have a low blood count, this means your bone marrow is not making enough of one type of blood cells. Doctors call a low blood count cytopenia .
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Generally, a blood loss of <15% of total blood volume leads to only a small increase in heart rate and no significant change in arterial pressure. When blood loss is 15 to 40%, mean arterial and pulse pressures fall, and heart rate increases, with the magnitude of these changes being related to how much blood is lost.
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It's also called fainting or "passing out." It most often occurs when blood pressure is too low (hypotension) and the heart doesn't pump enough oxygen to the brain. It can be benign or a symptom of an underlying medical condition.
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You may need a blood transfusion if you have: A severe infection or liver disease that stops your body from properly making blood or some parts of blood. An illness that causes anemia, such as kidney disease or cancer. Medicines or radiation used to treat a medical condition also can cause anemia.
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Red blood cell transfusions may be given to patients with severe iron-deficiency anemia who are actively bleeding or have significant symptoms such as chest pain, shortness of breath, or weakness. Transfusions are given to replace deficient red blood cells and will not completely correct the iron deficiency.
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It can cause fatigue, weakness, and shortness of breath. Some people with internal bleeding will also have low blood pressure because of the constant blood loss. This is known as orthostatic hypotension. Common symptoms include feeling dizzy or light-headed when you stand.
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When you don't have enough platelets in your blood, your body can't form clots. A low platelet count may also be called thrombocytopenia. This condition can range from mild to severe, depending on its underlying cause. For some, the symptoms can include severe bleeding and are possibly fatal if they're not treated.
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Hypovolemic shock. Hypovolemic shock is when your body goes into shock because of severe blood or fluid loss. Losing a large amount of blood, which can happen during surgery, causes a drop in blood pressure. Less blood means the body can't move it as easily to the organs it needs to reach.
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If too much blood volume is lost, a condition known as hypovolemic shock can occur. Hypovolemic shock is a medical emergency in which severe blood and fluid loss impedes the heart to pump sufficient blood to the body. As a result, tissues cannot get enough oxygen, leading to tissue and organ damage.
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Fainting, or syncope, is a sudden and temporary loss of consciousness. This usually occurs due to a lack of oxygen reaching the brain. Many things can cause oxygen deprivation to the brain, including low blood pressure. Fainting is not usually serious.
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Shock is a critical condition brought on by the sudden drop in blood flow through the body. Shock may result from trauma, heatstroke, blood loss, an allergic reaction, severe infection, poisoning, severe burns or other causes. When a person is in shock, his or her organs aren't getting enough blood or oxygen.