ورقة عمل علم الأدوية مع الإجابات

Why is carbidopa combined with levodopa?

1. AIt converts levodopa into dopamine inside the gut
2. BIt stops levodopa turning into dopamine outside the brain
3. CIt increases the breakdown of dopamine in the liver
4. DIt blocks dopamine receptors to reduce nausea in the brain

Finasteride is used in benign prostatic hyperplasia because it:

1. AKills bacteria in the prostate
2. BInhibits 5-alpha reductase and slowly shrinks the prostate
3. CIncreases testosterone production
4. DRelaxes smooth muscle in the prostate within hours of the first dose

ما المؤشر العلاجي؟

1. Aالزمن اللازم للوصول إلى الحالة المستقرة
2. Bعدد الجرعات يوميًا
3. Cالنسبة المئوية من الجرعة الفموية التي تصل إلى الدورة الجهازية
4. Dالنسبة بين الجرعة السامة والجرعة الفعالة

Why should loperamide usually be avoided in bloody diarrhoea with fever?

1. ALoperamide is an antibiotic that causes resistance
2. BLoperamide causes severe hypertension when there is an infection
3. CSlowing the gut may keep bacteria and toxins in the bowel longer
4. DLoperamide makes the bleeding worse by blocking platelets

Which teaching about zolpidem is correct?

1. ATake it with alcohol to make it act faster
2. BTake it in the morning so that it is out of the system by night
3. CTake it right before bed, only if you can sleep a full night
4. DDrive soon after waking, as the drug has no next-day effect

يعمل الوارفارين عن طريق:

1. Aحجب تكدس الصفائح عبر التثبيط غير العكوس لـ COX-1
2. Bحجب تخليق عوامل التخثر المعتمد على فيتامين K
3. Cتنشيط مضاد الثرومبين
4. Dتثبيط الثرومبين مباشرة

How does levonorgestrel emergency contraception mainly work?

1. AIt delays or prevents ovulation
2. BIt ends an established pregnancy
3. CIt causes an immediate period
4. DIt kills sperm in the vagina

Why must several weeks pass before starting an MAO inhibitor after stopping fluoxetine?

1. AFluoxetine permanently and irreversibly blocks MAO enzymes
2. BFluoxetine and its active metabolite have very long half-lives
3. CFluoxetine must first be converted into an MAO inhibitor
4. DMAO inhibitors are absorbed only after fluoxetine is gone