Nokea
Which of the following statements is FALSE?
- A. Selenium sulfide is used to treat seborrheic dermatitis of scalp
- B. Gamma-benzen hexachloride is effective against scabies
- C. Psoralens are used in the treatment of vitiligo
- D. Tetannic dioxide is an absorbent sunscreen
Correct Answer: D
Rationale: Titanium dioxide is a reflective, not absorbent, sunscreen.
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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.
Salicylic acid is prescribed for a client with a diagnosis of psoriasis. The nurse monitors the client, knowing that which of the following would indicate the presence of systemic toxicity from this medication?
- A. Tinnitus
- B. Diarrhea
- C. Constipation
- D. Decreased respirations
Correct Answer: A
Rationale: Salicylic acid is absorbed readily through the skin, and systemic toxicity (salicylism) can result. Symptoms include tinnitus, dizziness, hyperpnea, and psychological disturbances. Constipation and diarrhea are not associated with salicylism.
A nurse is teaching a client who has angina how to use nitroglycerin transdermal ointment. The nurse should include which of the following instructions?
- A. Remove the prior dose before applying a new dose.
- B. Rub the ointment directly into your skin until it is no longer visible.
- C. Cover the applied ointment with a clean gauze pad.
- D. Apply the ointment to the same skin area each time.
Correct Answer: A
Rationale: Removing the prior dose prevents overdose and ensures accurate dosing.
Which of the following create a higher risk for digoxin toxicity? Both the cause and the reason for it must be correct.
- A. Older adults because of reduced renal function
- B. Administration of aldosterone antagonist diuretics because of decreased potassium levels
- C. Taking an antacid for gastroesophageal reflux disease because it increases the absorption of digoxin
- D. Doses between 0.25 and 0.5 mg/day
Correct Answer: A
Rationale: Older adults have reduced renal clearance, increasing digoxin toxicity risk.
Please select a correct statement:
- A. The risk of glaucoma and cataract increases with long-term use of steroids
- B. in the case of long term corticosteroid therapy rapid withdrawal increase the risk of hypertonic crisis
- C. Prescribing steroids in the case of transplantation stimulated transplant rejection
- D. In the bone steroids decrease osteoclasts and increase osteoblasts
Correct Answer: A
Rationale: Long-term steroid use increases the risk of glaucoma and cataracts due to ocular effects.