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Last Updated: Oct. 28, 2016 [All links fixed]

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Case Report

History

Mr. VT is a 50-year-old male who has been admitted for elective surgery following a car accident. He had been admitted to another hospital 4 weeks earlier following the accident.

Tests

• Two units of red cells are ordered for the surgery.
• Results

Discussion and Resolution

• Case discussion, including interactive questions with feedback.
• Resolution

Quiz

After reviewing the case resolution, answer these questions:

1. What percentage of group A subgroups have anti-A₁ present?

   Answer

2. Is the anti-A₁ present in some A subgroups usually clinically significant?

   Answer

3. What is the typical appearance of mixed-field agglutination?

   Answer

4. What can cause mixed-field agglutination?

   Answer

Further Reading

• British Columbia Provincial Blood Coordinating Office. Technical resource manual for hospital transfusion services, ed 2. Vancouver: Provincial Blood Coordinating Office;2006. See CT.003 ABO group problem solving.