A 22-year-old student presents after a paracetamol overdose taken 4 hours ago. She is asymptomatic. What is the most important initial step?
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A
Reassure and discharge as she is asymptomatic
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B
Measure serum paracetamol level and plot on the treatment nomogram
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C
Start N-acetylcysteine immediately without waiting for levels
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D
Perform liver function tests and discharge if normal