ورقة عمل علم الأدوية مع الإجابات

Montelukast, used in asthma, belongs to which drug class?

1. AAntimuscarinic bronchodilators
2. BShort-acting beta-2 agonists
3. CLeukotriene receptor antagonists
4. DInhaled corticosteroids

Which effect is common and harmless with oral iron tablets?

1. ABlue tint to the lips
2. BRed-coloured urine
3. CYellow discoloration of the eyes
4. DDark or black stools

Which long-term side effect of phenytoin makes good oral hygiene especially important?

1. AExcess saliva production
2. BLoss of taste
3. COvergrowth of the gums (gingival hyperplasia)
4. DBlue-grey discoloration of the teeth and gums

Which group of signs suggests opioid withdrawal?

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

Which early signs suggest systemic toxicity from a local anaesthetic?

1. AItchy rash and swelling only at the injection site
2. BPinpoint pupils and slow, shallow breathing
3. CHeavy sweating, salivation and diarrhoea
4. DNumbness around the mouth, metallic taste and tinnitus

كيف يُحدث الهيبارين تأثيره المضاد للتخثر؟

1. Aيعزز مضاد الثرومبين الذي يعطّل الثرومبين والعامل Xa
2. Bيثبط COX-1 في الصفائح تثبيطًا غير عكوس
3. Cيحجب تخليق عوامل التخثر المعتمد على فيتامين K في الكبد
4. Dيفكك الفيبرين في الجلطات الموجودة

A patient took a large paracetamol (acetaminophen) overdose 6 hours ago and feels well. Why is treatment still urgent?

1. AThe patient is at risk of immediate respiratory arrest
2. BLiver damage appears 1–3 days later, and early treatment works best
3. CParacetamol overdose only causes harm if symptoms start in the first hour
4. DThe drug will cause kidney stones within a few hours

A patient with heart failure starts taking naproxen regularly for back pain. Why is this a concern?

1. ANSAIDs cause salt and water retention and can worsen heart failure
2. BNSAIDs block the absorption of furosemide completely
3. CNSAIDs lower potassium, which makes digoxin and diuretics fail
4. DNSAIDs increase heart contractility too much