ورقة عمل علم الأدوية مع الإجابات

Famotidine belongs to which drug class?

1. AProton pump inhibitors
2. BProstaglandin analogues
3. CAntacids
4. DH2 receptor antagonists

Naltrexone helps in alcohol use disorder because it:

1. ABlocks opioid receptors, reducing reward and craving
2. BSpeeds up the liver breakdown of alcohol
3. CReplaces alcohol as a sedative
4. DCauses vomiting and flushing whenever alcohol is drunk

جرعة الباراسيتامول الزائدة تضر أساسًا أي عضو؟

1. Aالرئتين
2. Bالكبد
3. Cبطانة المعدة
4. Dالكليتين أولًا ثم القلب

A patient given haloperidol develops a sudden painful twisting of the neck and the eyes roll upward. Which drug is usually given?

1. AAn anticholinergic such as benzatropine (benztropine)
2. BA second dose of haloperidol
3. CDantrolene by mouth to relax the twisted neck muscles
4. DNaloxone

Why is propranolol usually avoided in patients with asthma?

1. AIt causes tolerance to inhaled corticosteroids
2. BIt increases mucus production by blocking histamine
3. CIt blocks beta-2 receptors in the airways and can cause bronchospasm
4. DIt stimulates alpha-1 receptors in the airways and raises blood pressure

Which group of signs suggests opioid withdrawal?

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

A patient receiving frequent salbutamol (albuterol) nebulisers develops a fine tremor and a heart rate of 120 per minute. What is the best explanation?

1. AAt high doses it also stimulates beta receptors in skeletal muscle and the heart
2. BThe patient is allergic to salbutamol and needs adrenaline
3. CSalbutamol blocks muscarinic receptors in the heart
4. DSalbutamol causes high potassium, which speeds the heart and causes muscle twitching

A patient with heart failure on furosemide is also given metolazone, a thiazide-like diuretic. Which risk increases most?

1. AHyperkalaemia and fluid overload
2. BHypoglycaemia and weight gain
3. CSevere hypokalaemia, hyponatraemia and dehydration
4. DSevere hypertension, tachycardia and fluid retention