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What is the normal serum sodium range in adults?

1. A135–145 mmol/L
2. B150–165 mmol/L
3. C3.5–5.0 mmol/L
4. D95–105 mmol/L

Celecoxib selectively inhibits which enzyme?

1. APhospholipase A2
2. BCyclo-oxygenase-1 (COX-1)
3. CLipoxygenase
4. DCyclo-oxygenase-2 (COX-2)

How long does it usually take for an SSRI to improve mood noticeably?

1. AA few hours
2. BSeveral weeks
3. CAbout six months
4. DOne or two days

Which advice helps reduce the most common side effect of varenicline?

1. ATake it with alcohol to reduce nausea
2. BTake it after food with a full glass of water
3. CTake double doses in the first week
4. DTake it on an empty stomach at bedtime with a little milk

A nurse has a needlestick injury from a patient with HIV. When should post-exposure prophylaxis start?

1. AOnly if the patient's viral load is above a set level
2. BAs soon as possible, and within 72 hours at the latest
3. COnly after the nurse's HIV test turns positive
4. DAfter one week, when the risk of infection is clearer

Which lab tests are monitored in a patient taking carbamazepine?

1. AINR and aPTT
2. BFull blood count and serum sodium
3. CThyroid antibodies and cortisol
4. DSerum amylase and lipase

A patient on stable warfarin is prescribed a course of metronidazole. What is the likely effect, and what should the nurse expect?

1. AThe INR rises, so closer INR monitoring is needed
2. BThe INR falls, so the risk of clotting increases
3. CThe INR stays the same, as these drugs do not interact
4. DMetronidazole replaces warfarin, so warfarin is stopped

Which heart failure drug improves symptoms and reduces hospital admissions but has not been shown to reduce mortality?

1. ADigoxin
2. BA mineralocorticoid receptor antagonist such as spironolactone
3. CA beta blocker such as bisoprolol
4. DAn ACE inhibitor