Your orthopedic surgeon will be very careful during surgery to keep down the amount of blood you lose.
Blood may still continue to ooze from muscle and bone surfaces that were cut, even after the operation is over. Many patients need a blood transfusion after knee-replacement surgery. A blood transfusion is a safe, common procedure in which blood is given to you through an intravenous (IV) line in one of your blood vessels
If you need a blood transfusion, there are several sources of blood:
The most common source of blood given during or after surgery is from volunteers from the general public.
If you choose this method of receiving donated blood, there are no extra costs, further tests, or arrangements that you need to make. Your blood type will be determined during your routine blood test for your surgery.
Many communities have a blood bank at which any healthy person can donate their blood. This blood will be tested to see if it matches yours.
You may have read in the past about the danger of becoming infected with hepatitis, HIV, or other viruses after a blood transfusion. Blood transfusions can never be 100% safe. However, the current blood supply is thought to be safer now than it ever was before. The risk of exposure to a virus from a blood transfusion is low.
Any donor answers a detailed list of questions about their health and risk factors for infection before they are allowed to donate.
This method involves getting a family member or friend to donate blood before your surgery. This blood is then set aside and held only for you, if you need a blood transfusion after surgery.
Only family members or friends whose blood matches yours can be used. You will need to donate a unit of your own blood first. Then blood from these potential donors will be tested to see if they match yours.
Most of the time, you will need to arrange directed donor blood with your hospital or local blood bank.
Blood donated from these people must be collected at least a week before it is needed. Their blood is carefully screened for infection.
It is important to note that there is no evidence that receiving blood from family members or friends is any safer than receiving blood from the general public.
Although the blood donated by the general public and used for most people is very safe, some people choose to use a method called autologous blood donation.
Autologous blood is blood donated by you, which you can later receive if you need a transfusion during or after surgery.
If you wish to donate your own blood, you must make arrangements yourself. Your hospital may be set up to receive these donations and store the blood. Otherwise, your local blood bank may handle this process. Most of the time, you will need to pay for this process yourself.
There are problems that may happen with autologous blood donation also:
Your doctor will likely ask you to take extra vitamins and minerals to help your body make new blood cells. These include:
You may also be given a shot to boost your blood count prior to surgery.
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