ใบงาน เภสัชวิทยา พร้อมเฉลย

Timolol eye drops are used mainly to treat:

1. AGlaucoma
2. BDry eyes
3. CBacterial conjunctivitis
4. DCataracts

Venlafaxine belongs to which class of antidepressants?

1. ASelective serotonin reuptake inhibitors (SSRIs)
2. BMonoamine oxidase inhibitors
3. CTricyclic antidepressants
4. DSerotonin–noradrenaline reuptake inhibitors (SNRIs)

What does "PRN" mean on a medication order?

1. AImmediately, once only
2. BBefore meals
3. CAs needed
4. DEvery morning

After naloxone reverses an opioid overdose, why must the patient be watched closely?

1. ANaloxone often causes severe low blood glucose a few hours after the dose
2. BNaloxone may wear off before the opioid does, so breathing can slow again
3. CNaloxone makes the opioid stay longer in the body
4. DNaloxone itself causes respiratory depression at high doses

Which statement about allopurinol is correct?

1. AIt works within an hour to relieve joint pain
2. BIt increases uric acid production to flush out crystals
3. CIt lowers uric acid over time and does not relieve the pain of an acute attack
4. DIt is taken only during an acute attack and stopped as soon as the pain settles

Which group of signs suggests opioid withdrawal?

1. APinpoint pupils, slow breathing and drowsiness
2. BDry mouth, urinary retention, blurred vision and confusion
3. CYawning, runny nose, sweating, dilated pupils and diarrhoea
4. DConstipation, itching and a slow heart rate

A patient on methadone is also prescribed diazepam for anxiety. What is the main safety concern?

1. AAdditive sedation and respiratory depression
2. BMethadone causes diazepam to be excreted very quickly
3. CSevere hypertension from the combination
4. DDiazepam blocks the effect of methadone completely

A patient with HIV has a CD4 count below 200 cells/mm³. Which prophylaxis is usually started?

1. AIsoniazid to prevent hepatitis B
2. BFluconazole to prevent urinary and skin infections
3. CCo-trimoxazole to prevent Pneumocystis pneumonia
4. DOseltamivir to prevent influenza