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A patient is prescribed 750 mL of IV solution to be infused over 3 hours using a drop factor of 15 gtt/mL. What is the flow rate in drops per minute?
- A. 50 gtt/min
- B. 56 gtt/min
- C. 75 gtt/min
- D. 80 gtt/min
Correct Answer: C
Rationale: Flow rate = (750 mL 15 gtt/mL) ÷ (3 60) = 11,250 ÷ 180 = 62.5 gtt/min, closest to 75 gtt/min due to rounding in practice.
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A nurse is teaching a client who has OCD and has a new prescription for Paroxetine. Which of the following instructions should the nurse include?
- A. It can take several weeks before you feel like the medication is helping.
- B. Take the medication just before bedtime to promote sleep.
- C. I should take the medication for a new medical for a excessive urges.
- D. Monitor for weight gain while taking this medication.
Correct Answer: A
Rationale: Paroxetine, an SSRI, takes weeks for full effect , a key point for client expectations.
The term 'chemical antagonism' means that:
- A. two drugs combine with one another to form an inactive compound
- B. two drugs combine with one another to form a more active compound
- C. two drugs combine with one another to form a more water soluble compound
- D. two drugs combine with one another to form a more fat soluble compound
Correct Answer: A
Rationale: Chemical antagonism involves a direct chemical interaction rendering the drug inactive, e.g., chelation.
A nurse working in radiology administers iodine to a patient who is having a computerized axial tomography (CAT) scan. A nurse working on an oncology unit administers chemotherapy to patients who have cancer. At the Public Health Department, a nurse administers a measles-mumps-rubella (MMR) vaccine to a 14month-old child as a routine immunization. Which branch of pharmacology best describes the actions of all three nurses?
- A. Pharmacoeconomics
- B. Pharmacotherapeutics
- C. Pharmacodynamics
- D. Pharmacokinetics
Correct Answer: B
Rationale: Pharmacology is the study of the biologic effects of chemicals. Nurses are involved with clinical pharmacology or pharmacotherapeutics, which is a branch of pharmacology that deals with the uses of drugs to treat, prevent, and diagnose disease. The nurse working in radiology is administering a drug to help diagnose a disease. The nurse working on an oncology unit is administering a drug to help treat a disease. Pharmacoeconomics includes any costs involved in drug therapy. Pharmacodynamics involves how a drug affects the body, and pharmacokinetics is how the body acts on the drug.
When taking a medication history on a patient why should the nurse ask about the use of alternative therapies?
- A. Patients who use new drugs are usually not compliant with medical regimens.
- B. Many drug-alternative therapy interactions can cause serious problems and should be avoided.
- C. Natural products may be more effective and the drug may not be needed.
- D. The cost of the drug and the alternative therapy may be too great for the patient to handle.
Correct Answer: B
Rationale: Alternative therapies can interact with prescribed drugs, potentially causing adverse effects, making this a critical assessment point.
The nurse is caring for a patient who had a severe, acute, previously unseen adverse effect of a drug in Phase III testing. The patient asks, After all the testing done on this drug, didnt they know this adverse effect could occur? What is the nurses best response? (Select all that apply.)
- A. Phase III testing involves wide-scale population testing, which can reveal rare adverse effects not seen in earlier phases.
- B. New adverse effects can lead to further study or withdrawal of the drug.
- C. Phase I testing on healthy volunteers ensures all adverse effects are identified before patient use.
- D. Even with extensive testing, some adverse effects may only appear after widespread use.
Correct Answer: C
Rationale: Phase III testing involves a large population, uncovering rare effects . Preclinical animal studies don't fully predict human responses (B is false). Phase I uses healthy volunteers, missing disease-specific effects (C is false). Rare effects emerge post-approval , potentially leading to further action .