Q. 18. What is �blood typing�? How is it done? Why is it so important to run blood typing before a blood transfusion? What happens if mom and baby have different blood types?
A. Blood typing is determining the antigens present on a red blood cell.
In a clinical setting, blood type is determined by mixing red blood cells with in three different tubes. One with anti-A antibodies, one with anti-B antibodies, and another with anti-D antibodies. This determines the forward type. The person's plasma (the liquid portion of blood) is mixed in two other tubes, one with type A red blood cells, and the other with type B red blood cells to determine the reverse or back type. Agglutination (red cells clumping) indicates a reaction between antigen and antibody. So if there is agglutination in the tubes of anti-A, anti-D, and B red blood cells, the person is A+.
It is important to determine the blood type because of the antibodies that are present to ABO blood group antigens that are not present on the person's red blood cells. For example, type A individuals are expected to produce anti-B antibodies. If you transfuse blood that has one of the antigens that the body has made antibodies toward, the antibodies will attach to the transfused red blood cells and hemolyze them. The resulting reaction can cause death.
If mom and baby have different blood types there is a chance that the mom's antibodies cross the placenta and start destroying the baby's red blood cells. In mild cases it will cause increased bilirubin levels after birth. In severe cases it could cause death of the baby if there is no intervention. ABO incompatibilities between mother and baby rarely cause major problems.
In a clinical setting, blood type is determined by mixing red blood cells with in three different tubes. One with anti-A antibodies, one with anti-B antibodies, and another with anti-D antibodies. This determines the forward type. The person's plasma (the liquid portion of blood) is mixed in two other tubes, one with type A red blood cells, and the other with type B red blood cells to determine the reverse or back type. Agglutination (red cells clumping) indicates a reaction between antigen and antibody. So if there is agglutination in the tubes of anti-A, anti-D, and B red blood cells, the person is A+.
It is important to determine the blood type because of the antibodies that are present to ABO blood group antigens that are not present on the person's red blood cells. For example, type A individuals are expected to produce anti-B antibodies. If you transfuse blood that has one of the antigens that the body has made antibodies toward, the antibodies will attach to the transfused red blood cells and hemolyze them. The resulting reaction can cause death.
If mom and baby have different blood types there is a chance that the mom's antibodies cross the placenta and start destroying the baby's red blood cells. In mild cases it will cause increased bilirubin levels after birth. In severe cases it could cause death of the baby if there is no intervention. ABO incompatibilities between mother and baby rarely cause major problems.
What should purified blood contain after being filtered in the kidneys?
Q. when blood is filtered in the kidney and then back in the renal vein, what should that blood contain?
A. Blood proteins. They are too large to filter through the fenstrated endothelium of of glomerulus in the kidney nephrons.
EDIT: In addition the blood will contain hemoglobin and anything else that is the same size or larger than a red blood cell.
EDIT: In addition the blood will contain hemoglobin and anything else that is the same size or larger than a red blood cell.
What kind of blood is given in a transfusion to these 3 patients?
Q. What kind of blood is given in a transfusion to these 3 patients?
Rh-
AB
A+
What type of blood is given to these 3 blood types if they needed a blood transfusion?
Rh-
AB
A+
What type of blood is given to these 3 blood types if they needed a blood transfusion?
A. Blood types such as A+ summarise two different typing systems: ABO (A, B, AB, O) and Rhesus (positive and negative). The two work in similar ways but aren't connected.
In each case the types are determined by whether or not you have a bit of chemical on your blood cells. These 'antigens' can be called A, B and Rh. If you don't have one, you're likely to have antibodies against it. If your blood cells have all three, you're AB+ (short for AB type & Rhesus+), if none you're O-.
So to use that for your questions:
Rh-
This isn't a whole blood type, just the Rh factor without the ABO type. You might give someone with Rh- a negative type, possibly AB-, A- or B- depending on their ABO type. If you didn't know (or you knew they were O-) you'd give them O- as O- is the universal donor (or as close a you get to one - you have to ignore plasma and rare blood types and stuff)
AB
This isn't a whole blood type either. You could give them any ABO type in theory as AB is the universal acceptor (or as close as you get to one... blah-de-blah). If you didn't know whether they were AB+ or AB-, you'd give them AB-, or failing that another negative type.
A+
You'd give them A+, or failing that O+, or failing that O-, but _nothing_else_.
In each case the types are determined by whether or not you have a bit of chemical on your blood cells. These 'antigens' can be called A, B and Rh. If you don't have one, you're likely to have antibodies against it. If your blood cells have all three, you're AB+ (short for AB type & Rhesus+), if none you're O-.
So to use that for your questions:
Rh-
This isn't a whole blood type, just the Rh factor without the ABO type. You might give someone with Rh- a negative type, possibly AB-, A- or B- depending on their ABO type. If you didn't know (or you knew they were O-) you'd give them O- as O- is the universal donor (or as close a you get to one - you have to ignore plasma and rare blood types and stuff)
AB
This isn't a whole blood type either. You could give them any ABO type in theory as AB is the universal acceptor (or as close as you get to one... blah-de-blah). If you didn't know whether they were AB+ or AB-, you'd give them AB-, or failing that another negative type.
A+
You'd give them A+, or failing that O+, or failing that O-, but _nothing_else_.
How much blood is taken for a thyroid blood test?
Q. I have to get a blood test to check my thyroid, I think it's a full thyroid panel or something like that. I want to know if it is a lot of blood/many tubes of blood. I tend to pass out if it's a lot of blood, so I want to know. Thanks.
A. Probably two small tubes but it's no big deal. I have had blood taken for thyroid tests for many years, and many more tests for other matters. Try looking at something else and concentrating on that and it will be over in one minute or less.
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