Anesthesia Technologist Practice Exam

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What does the AABB recommend for filtering blood collected from an autotransfusion device during transfusion?

  1. 20 micron filter

  2. 40 micron filter

  3. 60 micron filter

  4. No filter required

The correct answer is: 40 micron filter

The American Association of Blood Banks (AABB) recommends the use of a 40 micron filter for filtering blood collected from an autotransfusion device during transfusion. This filtration process is crucial because it helps to remove cellular debris and aggregates that can form during the collection and storage of blood, ensuring that the blood being reinfused is as safe and clear as possible. Using a 40 micron filter effectively balances the need to retain necessary components of the blood, such as red blood cells, while excluding potentially harmful particles that could lead to complications. Filters of this size are designed to trap larger particles without significantly impacting the flow rate of blood during transfusion, maintaining an efficient process. The other filter sizes mentioned do not align with the specific recommendations provided by the AABB for this purpose, as they may either be too coarse or too fine to serve the intended goal safely and effectively.

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