One type of congenital heart defect is where the left and right atria are not completely separated. This is called an atrial septal defect (ASD). ASD usually results in blood moving from the left atrium into the right atrium. This causes increased blood pressure in the right atrium and decreased blood pressure in the left atrium. Which row describes other effects caused by ASD?
✓ Correct Answer
The correct answer is D: blood pressure in pulmonary artery: increased, blood pressure in aorta: decreased, % oxygenation of blood in pulmonary artery: increased
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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