Blood Donation and Collection Process

What is the primary reason for discouraging professional blood donors?

They are not compatible with O Bombay blood group
They have a low haemoglobin count due to frequent donations
They have a high frequency of antibodies
They are a high source of infection (correct)

What is the primary purpose of CUE?

To supervise the blood collection process
To provide an open forum for donors to discuss their blood donation experiences
To give donors a confidential way to inform the blood centre about potential blood safety issues (correct)
To educate donors about the importance of blood donation

In which situation is a specific designated donor required?

When a patient has a rare blood group
When a patient has an antibody to a high frequency antigen (correct)
When a patient is in need of a whole blood transfusion
When a patient is a recipient of a directed donation

What type of donation is characterized by a donor who donates blood for a specific recipient?

Directed donation (D) Signup and view all the answers

What is the ideal environment for a donor room?

A large, well-lit, and well-ventilated room with comfortable seating (C) Signup and view all the answers

Why is it important to confirm the identity of the donor before beginning the venepuncture?

To ensure the correct label is applied to the blood bag (B) Signup and view all the answers

What is the primary motivation of voluntary blood donors?

To donate blood on their own free will (A) Signup and view all the answers

What is the result of frequent blood donations on a professional donor's haemoglobin count?

It decreases (C) Signup and view all the answers

What is the purpose of using a 10% iodine solution during arm preparation?

To disinfect the venepuncture site (C) Signup and view all the answers

What is the term for the collection, processing, and storage of blood for a specific recipient?

Donor specific transfusion (C) Signup and view all the answers

How many tubes are typically used for testing during a blood donation procedure?

2-4 tubes (B) Signup and view all the answers

What is the typical duration of a blood donation procedure?

8-12 minutes (C) Signup and view all the answers

What is the purpose of testing patient serum with reagent RBCs in blood banking?

To detect and identify antibodies in the patient's serum (B) Signup and view all the answers

What is the main difference between Screening Red Cells and Panel Red Cells?

The number of vials used (B) Signup and view all the answers

What does the '+' symbol represent on an antigram?

The presence of an antigen (B) Signup and view all the answers

What is the purpose of an autocontrol (AC) in antibody panel testing?

To verify the accuracy of the test results (A) Signup and view all the answers

What is the temperature and duration of the incubation phase in the LISS 37°C phase?

10-15 minutes at 37°C (A) Signup and view all the answers

What is the purpose of the immediate spin (IS) phase in antibody identification testing?

To detect agglutination reactions (A) Signup and view all the answers

What is a common finding in serum from patients with multiple myeloma that can be mistaken for agglutination?

Rouleaux formation (A) Signup and view all the answers

Which of the following serological tests is NOT a method for identifying unexpected antibodies in a patient's serum?

Indirect Coomb's test (D) Signup and view all the answers

Why is antibody identification important in compatibility testing?

To prevent transfusion reactions (D) Signup and view all the answers

What is the result of a positive direct Coomb's test indicative of?

The presence of an antibody in the patient's serum (B) Signup and view all the answers

Which of the following is a consequence of not identifying an unexpected antibody in a patient's serum?

Serious side effects (D) Signup and view all the answers

What is the purpose of antigen listing in the Reagent Red Blood Cell Screening Cell?

To list the antigens present on the donor cells (A) Signup and view all the answers

What is the primary purpose of the Indirect Antiglobulin Test (IAT)?

To determine whether a patient's serum contains antibodies that react with RBCs in vitro (B) Signup and view all the answers

What is the significance of agglutination in the AHG phase of the IAT?

It indicates the presence of warm-reacting antibodies and is significant (A) Signup and view all the answers

What is the purpose of washing red cells with saline in the IAT?

To prepare the red cells for the addition of AHG (D) Signup and view all the answers

What is the difference between the IS phase and the 37°C phase in the IAT?

The IS phase detects cold-reacting antibodies, while the 37°C phase detects warm-reacting antibodies (D) Signup and view all the answers

What is the importance of the autocontrol in the IAT?

It is used to rule out the presence of autoantibodies in the patient's serum (D) Signup and view all the answers