A 50-year-old patient with a right deep vein thrombosis and haemoptysis. These blood results are from admission:
|
Parameter |
Patient |
Reference |
|
PT |
12 seconds |
12 – 14 |
|
APTT* |
69 seconds |
34 – 38 |
|
Thrombin time |
16 seconds |
14 – 18 |
|
APTT mixing test |
60 seconds |
Explain the APTT mixing test and outline its significance in this patient (3 marks)
Syllabus topic/section: 2.1.11 Haematological and Oncological Intensive Care
Discussion:
This was a repeat question and so a higher standard of performance was required. Poorly performing candidates frequently gave an incorrect interpretation for section 30.2 and/or failed to explain the mixing test in section 30.3. The relevance of normal tests in the questions were often misinterpreted or missed in the explanations candidates provided.