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A 77-year-old male presents with lower back pain after a recent minor trip. He has a normal lower limb neurological examination and no focal spinal tenderness. Blood tests show Hb 60, WCC 0.4, neutrophils 0.18 and platelets 6.

1. State the relevant features of these blood tests. 1 mark

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2. List three central and three peripheral causes that must be considered. 3 marks

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3. List four blood products which may be used without confirming ABO compatibility. 4 marks

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He is transfused 2 units of PRBC and becomes acutely hypoxic and dyspnoeic.

4. Complete the table with respect to transfusion reactions. 10 marks

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