Nokea
Anticholinergic agents, such as benztropine (Cogentin), may be given with a phenothiazine to:
- A. Reduce the chance of tardive dyskinesia
- B. Potentiate the effects of the drug
- C. Reduce the tolerance that tends to occur
- D. Increase central nervous system 4 (iNS) rdey
Correct Answer: A
Rationale: Benztropine reduces EPS, which can precede tardive dyskinesia in phenothiazine use.
You may also like to solve these questions
Zero order kinetics are seen in all except
- A. Salicylate
- B. Atenolol
- C. Barbiturates
- D. Ethanol
Correct Answer: C
Rationale: Barbiturates typically follow first-order kinetics; others exhibit zero-order at high doses.
Treatment goals in prescribing should:
- A. Always be curative
- B. Be patient-centered
- C. Be convenient for the provider
- D. Focus on the cost of therapy
Correct Answer: B
Rationale: Patient-centered goals prioritize individual needs and outcomes, not just cure , provider convenience , or cost alone .
A nurse assessing a client's IV catheter insertion site notes a hematoma. Which of the following actions should the nurse take? (Select all that apply.)
- A. Stop the infusion.
- B. Apply alcohol to the insertion site.
- C. Apply warm compresses to the insertion site
- D. Lower the client's arm.
Correct Answer: C
Rationale: Warm compresses and elevation reduce swelling and promote absorption of a hematoma.
Which of the following drugs is considered a first-generation cephalosporin?
- 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).
A patient presents to the emergency department with a drug level of 50 units/mL. The half-life of this drug is 1 hour. With this drug, concentrations above 25 units/mL are considered toxic and no more drug is given. How long will it take for the blood level to reach the non-toxic range?
- A. 30 minutes
- B. 1 hour
- C. 2 hours
- D. 3 hours
Correct Answer: B
Rationale: Half-life is the time required for the serum concentration of a drug to decrease by 50%. After 1 hour, the serum concentration would be 25 units/mL (50/2) if the body can properly metabolize and excrete the drug. After 2 hours, the serum concentration would be 12.5 units/mL (25/2) and reach the nontoxic range. In 30 minutes the drug level would be 37.5 units/mL, whereas in 3 hours the drug level would be 6.25.