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Blood Preservation and RBC Viability Quiz

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Blood Preservation and RBC Viability Quiz

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Questions and Answers

What is the goal of blood preservation?

To promote hemolysis

To decrease RBC viability

To maintain RBC integrity

To increase RBC viability (correct)

How is RBC viability measured?

By analyzing plasma composition

By measuring total hemoglobin levels

By counting the number of RBCs

By assessing free hemoglobin levels (correct)

What does increased free Hgb levels indicate?

Reduced hemolysis

Increased RBC integrity

Decreased RBC viability (correct)

Improved blood preservation

Why is it important to maintain red cell integrity throughout the shelf-life of stored RBCs?

To reduce the risk of hemolysis after transfusion Signup and view all the answers

How are new preservation solutions and storage containers evaluated?

By evaluating free Hemoglobin levels over time Signup and view all the answers

What happens to the percentage of hemolysis with the day of storage?

It progressively increases Signup and view all the answers

How is post-transfusion RBC survival determined?

By reinfusing labeled RBCs to the original donor Signup and view all the answers

'24-hour post-transfusion RBC survival at outdate' can be less than 75% due to what factor?

'Critically ill patients' low RBC survival rate Signup and view all the answers

'The less the free haemoglobin over time, the more effective the preservative' - What does this statement suggest about preservative effectiveness?

'Less free hemoglobin' indicates better preservation Signup and view all the answers

'The percentage hemolysis progressively increases with the day of storage' - What does this statement imply about stored RBCs?

'Storage time' increases the risk of hemolysis Signup and view all the answers