Blood groups and haemostasis questions PDF

Title	Blood groups and haemostasis questions
Course	Foundations of nursing
Institution	University of East Anglia
Pages	2
File Size	50 KB
File Type	PDF
Total Downloads	48
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Formative questions Blood groups and haemostasis

1. State the four major blood groups A, B, AB, O 2. What is a a. ‘self’ antigen? Part of the red blood cell b. a ‘non-self’ antigen? Not part of it 3. Where are the antigens located that are the basis of blood grouping? Are located on the surface of the red blood cells. 4. Which antibodies are found in the plasma of a person with blood group…? a. O Anti- A and Anti- B b. A Anti- B c. B Anti- A d. AB None 5. For whole blood, why is a. group O termed the universal donor? It has no antigens b. group AB termed the universal recipient? It has no antibodies in it.r 6. State the clinical significance of the Rhesus antigen. The D antigen is used to determine the risk of hemolytic disease of the newborn Rh disease management. 7. State the purpose of haemostasis. Keeping the right balance in the body. 8. Identify the two main plasma proteins involved in haemostasis. Fibrinogen and platelets?? 9. Identify the three main phases of haemostasis. Vascular spasm, platelet plug formation, coagulation. 10. Outline what happens in each phase.

Vascular spasm: the smooth muscle in the vessel contracts near the injury. Platelet plug formation: Platelets become spiked and stick to each other on the wound site. Coagulation: fibrinogen is converted to fibrin forming a mesh to trap more platelets producing a clot. 11. What is the trigger for haemostasis? An injury. Loss of blood and blood components 12. What is the technical term for platelets and where are they produced? Thrombocytes are produced in the bone marrow. 13. What do you understand by the term ‘coagulation cascade’? Different factors and one triggers the other forming a chain. 14. How is vitamin K significant in coagulation? Factors II, VII, IX, X need vitamin K to convert prothrombin into thrombin. 15. Name two conditions characterised by problems with haemostasis. Thrombocytosis (high platelet count) Thrombocytopenia (low platelet count) KB 22 Oct 2017...