Nokea
A pharmaceutical lab states that a drug causes negative side effects in 3 of every 100 patients. To confirm this affirmation, another laboratory chooses 5 people at random who have consumed the drug. What is the probability that none of the five patients experience side effects?
- A. 0.8687
- B. 0.1313
- C. 0.00847
- D. 0.0003
Correct Answer: A
Rationale: Using the binomial distribution with n=5, p=0.03, and q=0.97, the probability of zero side effects is calculated as P(X=0) = (5 choose 0) * 0.97^5 = 0.8687, as shown in the document.
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- A. Cefepime
- B. Cefazolin
- C. Ceftriaxone
- D. Cephalexin
Correct Answer: B
Rationale: Cefazolin is a first-generation cephalosporin, effective against Gram-positive bacteria, unlike cefepime (fourth) or ceftriaxone (third).
The MMR vaccine is not recommended for pregnant women because:
- A. Pregnant women do not build adequate immunity to the vaccine
- B. There is a risk of the pregnant women developing measles encephalopathy
- C. There is a risk of the fetus developing congenital rubella syndrome
- D. Pregnant women can receive the MMR vaccine
Correct Answer: C
Rationale: MMR (live vaccine) risks fetal congenital rubella syndrome ; pregnancy contraindicates it, not immunity or encephalopathy .
When prescribing NSAIDS, a complete drug history should be conducted as NSAIDs interact with these drugs:
- A. Omeprazole, a proton pump inhibitor
- B. Combined oral contraceptives
- C. Diphenhydramine, an antihistamine
- D. Warfarin, an anticoagulant
Correct Answer: D
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A 60-year-old man with Type 2 diabetes mellitus is treated with pioglitazone. Which of the following phrases summarizes best this drug's main mechanism of action?
- A. Blocks intestinal carbohydrate absorption
- B. Causes glycosuria (increased renal glucose excretion)
- C. Increases hepatic gluconeogenesis
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Correct Answer: D
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What is the mechanism of action of miglitol?
- A. Decreased glucagon release
- B. Increased insulin release
- C. Increased insulin sensitivity in peripheral tissues
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Correct Answer: D
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