Nokea
Which of the following drugs should be used only when clearly needed in pregnant and breastfeeding women?
- A. Memantine
- B. Pyridostigmine
- C. Galantamine
- D. Rivastigmine
Correct Answer: B
Rationale: Pyridostigmine's safety in pregnancy/breastfeeding is less established, requiring caution.
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Which of the following drugs is CORRECTLY paired with its ECG effects?
- A. Lidocaine; decreased QRS and PR intervals
- B. Metoprolol: increased QRS duration
- C. Flecainide: increased PR, QRS, and QT intervals
- D. Verapamil: increased PR interval
Correct Answer: D
Rationale: Verapamil slows AV conduction, increasing PR interval.
When describing the various types of medications to a group of nursing students, a nursing instructor would identify which of the following as a source for deriving medications?
- A. Plants
- B. Synthetic sources
- C. Mold
- D. All the above
Correct Answer: D
Rationale: Medications are derived from natural sources, for example, plants, molds, minerals, and animals, as well as created synthetically in a laboratory.
Tick the substance which changes the activity of an effector element but doesn't belong to second messengers:
- A. cAMP
- B. cGMP
- C. G-protein
- D. Calcium ions
Correct Answer: C
Rationale: G-protein is a transducer, not a second messenger, unlike cAMP, cGMP, and calcium.
A nurse in the post-anesthesia care unit is caring for a client who is experiencing malignant hyperthermia. Which of the following actions should the nurse take?(Select one that does not apply.)
- A. Place a cooling blanket on the client.
- B. Administer oxygen at 100%.
- C. Administer iced 0.9% sodium chloride.
- D. Administer blood, 0.1% sodium chloride.
Correct Answer: D
Rationale: Cooling , oxygen , iced saline , and temperature monitoring manage malignant hyperthermia.
When assessing a patient prior to starting a drug regimen it is often necessary to have a baseline kidney function study done. What might kidney impairment indicate in relation to drug therapy?
- A. Pharmacodynamics stable at the therapeutic dose
- B. Contraindication to the use of a drug
- C. Increased dosage of a drug
- D. Decreased adverse effects of a drug
Correct Answer: B
Rationale: Kidney impairment may contraindicate certain drugs due to reduced clearance, risking toxicity.