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The amount of blood in a person’s body will rely on their age and size. Losing a certain amount of blood will not cause any harm to the body.
Every single second, someone in the world needs blood, but supplies are low due to COVID-19.
In this article, you will know more about the average volume of blood in adults and children.
People of a different age will have a different blood volume
The average quantities of blood are::
- 4.3 litre of blood in an average-sized female (5 feet 5 inches tall and weighing 165 pounds)
- 5.7 litre in an average-sized male (6 feet in height and weighing 200 pounds)
- In an infant, about 1.2 fluid ounces (fl oz) for every pound of body weight (75 – 80 millilitres (ml) of blood per kilogram).
- As for a child, about 1–1.2 fl oz for every pound of body weight (70–75 ml of blood per kg)
For clarity, Medical News Today has converted these figures from the formula given in Open Anesthesia.
Blood volume test
A doctor may use this test to assess a variety of conditions, such as:
- congestive heart failure
- kidney failure
- shock
There are different ways of testing, but a blood volume test usually involves injecting a small amount of a tracer substance into the body. A healthcare professional will then use imaging technology to track blood moving around the body.
Shock and blood loss
Severe bleeding leads to an insufficient oxygen supply. Low oxygen levels can cause damage to the brain and other organs.
If someone is losing blood, the body will start to direct blood toward the vital organs and away from the skin, fingers, and toes. A person may start to feel numbness.
Transfusions
A blood transfusion is a donate blood process to someone who needs it.
Blood transfusions can be a life-saving procedure. People can also receive other parts of blood, such as plasma and platelets, for various treatment purposes.
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