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MERLOT II


    

Comment


Material:

Blood Groups, Blood Typing, Blood Transfusions

Rating: 1 star
Used in Course: Not used in course
Submitted by: Beverley Ferrell (Consultant), Jun 19, 2008
Comment: Not suitable for biology, MLT, MT or science programs. Very misleading to the concepts of blood group and typing procedures. Totally ignores the concepts of whole blood versus packed cells and if you gave blood based on the table, could kill patients.

Technical Remarks:

Picture of droplet of blood is misleading. Plasma is clear yellow, not red. It only looks that way because of the large number of red cells. http://nobelprize.org/educational_games/medicine/landsteiner/readmore.html This statement is an error: According to the AB0 blood typing system there are four different kinds of blood types: A, B, AB or 0 (null). ABO are GROUPS not Types. Only RH is a type. It is called a group and Type process for that reason. This statement is also an error Rh factor blood grouping system IT is a blood TYPING system. There is also no mention of the DU factor that makes initial typing look negative. Again, mixing names, typing is not grouping. Blood typing – how do you find out to which blood group someone belongs? Be specific and state group and type. Such misuse of terms leads to poor understandings of the concepts of blood group and type terminology. The statement If the blood does not agglutinate, it indicates that the blood does not have the antigens binding the special antibody in the reagent. is not true because it blankets the RH DU with A and B reaction. IF someone used this procedure without knowing anything,they could cause a reaction and antibody production. again..use group and type,not group 3. If you know which antigens are in the person's blood, it's easy to figure out which blood group he or she belongs to! This statement on the side: agglutination occurs. This is dangerous because the agglutinated red blood cells break after a while and their contents leak out and become toxic. The chart of who can give and receive blood is VERY WRONG. There is a difference between giving whole blood and red cell pack. Based on that chart you could kill someone because group O CANNOT give whole blood to groups A and B or AB, ONLY packed cells. It also ignores the Rh factor of being a "universal donor". The same thing applies to the universal donor and recipient graphics The game is extremely poor. No directions, no explanations and ignores serum/blood/cell issues in group and typing. You would kill patients and totally mislead the learner of blood group and type procedures. Landsteiner link not investigated at this point.